{"id":9313,"date":"2025-08-02T08:51:33","date_gmt":"2025-08-02T00:51:33","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=9313"},"modified":"2026-04-25T23:50:13","modified_gmt":"2026-04-25T15:50:13","slug":"420-stainless-steel","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/420-stainless-steel\/","title":{"rendered":"A\u00e7o inoxid\u00e1vel 420 | 1.2083 | 2Cr13"},"content":{"rendered":"<div class=\"wp-block-cover alignfull\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"337\" class=\"wp-block-cover__image-background wp-image-7233 size-large\" alt=\"\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3-1024x337.webp\" data-object-fit=\"cover\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3-1024x337.webp 1024w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3-300x99.webp 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3-768x253.webp 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3-1536x506.webp 1536w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3-18x6.webp 18w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3.webp 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#4e4b40\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<h1 class=\"wp-block-heading\" id=\"h-420-stainless-steel-1-2083-2cr13\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">A\u00e7o inoxid\u00e1vel 420 | 1.2083 | 2Cr13<\/mark><\/h1>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-aobo-steel-trusted-global-tool-steel-supplier\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">AOBO STEEL \u2013 Fornecedor global confi\u00e1vel de a\u00e7o para ferramentas<\/mark><\/h3>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Enviar consulta agora<\/a><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/aobosteel.com\/pt\/420-stainless-steel\/\"><\/a><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">O a\u00e7o inoxid\u00e1vel 420 \u00e9 um a\u00e7o inoxid\u00e1vel martens\u00edtico, um tipo de liga de ferro-cromo. Faz parte da classifica\u00e7\u00e3o de a\u00e7os inoxid\u00e1veis da s\u00e9rie 400. Ao contr\u00e1rio de alguns outros tipos de a\u00e7o inoxid\u00e1vel, o a\u00e7o inoxid\u00e1vel AISI 420 \u00e9 magn\u00e9tico.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-eael-table-of-content\">1. Aplica\u00e7\u00f5es<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Talheres e ferramentas afiadas&nbsp;<\/li>\n\n\n\n<li>Instrumentos M\u00e9dicos e Cir\u00fargicos&nbsp;<\/li>\n\n\n\n<li>Moldes de pl\u00e1stico e ferramentas para moldes&nbsp;<\/li>\n\n\n\n<li>Pe\u00e7as de v\u00e1lvulas e bombas&nbsp;<\/li>\n\n\n\n<li>Engrenagens, eixos e rolos&nbsp;<\/li>\n\n\n\n<li>Aplica\u00e7\u00f5es industriais e resistentes ao desgaste&nbsp;<\/li>\n\n\n\n<li>Copos e outras pe\u00e7as moldadas&nbsp;<\/li>\n\n\n\n<li>Rolamentos&nbsp;<\/li>\n\n\n\n<li>Outras aplica\u00e7\u00f5es: Molas, ferramentas manuais, \u00edm\u00e3s, fixadores, pe\u00e7as de m\u00e1quinas, placas de prensa, componentes de escapamento automotivo, matrizes para perfura\u00e7\u00e3o fina de micropadr\u00f5es em chapas met\u00e1licas, eletrodom\u00e9sticos e utens\u00edlios dom\u00e9sticos.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-eael-table-of-content\">2. Composi\u00e7\u00e3o do a\u00e7o inoxid\u00e1vel 420<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Elemento<\/td><td>Carbono (C)<\/td><td>Mangan\u00eas (Mn)<\/td><td>Sil\u00edcio (Si)<\/td><td>F\u00f3sforo (P)<\/td><td>Enxofre (S)<\/td><td>Cromo (Cr)<\/td><\/tr><tr><td>Composicional&nbsp;<\/td><td>0.15- 0.40%<\/td><td>\u2264 1,00%<\/td><td>\u2264 0,50%<\/td><td>\u2264 0,040%<\/td><td>\u2264 0,030%<\/td><td>12h00 \u2013 14h00%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-eael-table-of-content\">3. Propriedades do a\u00e7o inoxid\u00e1vel 420<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"><strong>Dureza e resist\u00eancia ao desgaste:&nbsp;<\/strong>Ap\u00f3s o tratamento t\u00e9rmico adequado, o a\u00e7o inoxid\u00e1vel 420 tem uma dureza de 46\u201352 HRC.<\/span> Essa dureza lhe confere boa resist\u00eancia ao desgaste e \u00e0 corros\u00e3o.<\/li>\n\n\n\n<li><strong>Resist\u00eancia \u00e0 corros\u00e3o:<\/strong>&nbsp;O cromo presente no a\u00e7o inoxid\u00e1vel AISI 420 forma uma camada de passiva\u00e7\u00e3o que protege sua superf\u00edcie e proporciona excelente resist\u00eancia \u00e0 corros\u00e3o em ambientes atmosf\u00e9ricos amenos, dom\u00e9sticos e industriais.<\/li>\n\n\n\n<li><strong>Polibilidade:&nbsp;<\/strong>Esta classe apresenta excelente polibilidade, o que a torna a escolha preferida para aplica\u00e7\u00f5es que exigem um acabamento de superf\u00edcie de alta qualidade, como moldes de inje\u00e7\u00e3o de pl\u00e1stico e componentes \u00f3pticos.<\/li>\n\n\n\n<li><strong>Tenacidade e soldabilidade:\u00a0<\/strong>The carbon content is higher than that of low-carbon steel, making it harder but with lower toughness. Due to its high carbon content, it also has poor weldability.\u00a0If welding is necessary, significant preheating and post-weld heat treatments (like\u00a0<em>recozimento<\/em>) s\u00e3o frequentemente necess\u00e1rios para evitar rachaduras. O uso de metais de adi\u00e7\u00e3o especializados (por exemplo, ERNiCr-3) pode ser considerado, embora isso possa afetar a resist\u00eancia e a dureza finais da \u00e1rea soldada.<\/li>\n\n\n\n<li><strong>Usinabilidade:\u00a0<\/strong>Em sua condi\u00e7\u00e3o recozida, o a\u00e7o 420 oferece usinabilidade razo\u00e1vel. Para aplica\u00e7\u00f5es que exigem usinagem mais complexa, uma variante de usinagem livre,<strong>\u00a0420F<\/strong>\u00a0(with added sulfur), is available. Note that the addition of sulfur can slightly decrease notch toughness.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns has-ast-global-color-8-background-color has-background is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"764\" height=\"764\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif\" alt=\"A\u00e7o inoxid\u00e1vel 420\" class=\"wp-image-9160\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif 764w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel-300x300.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel-150x150.avif 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel-12x12.avif 12w\" sizes=\"auto, (max-width: 764px) 100vw, 764px\" \/><figcaption class=\"wp-element-caption\">A\u00e7o inoxid\u00e1vel 420<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Interessado em a\u00e7o inoxid\u00e1vel AISI 420?<\/strong> <strong>Preencha o formul\u00e1rio abaixo para entrar em contato conosco agora!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-leadin-hubspot-form-block\">\n\t\t\t\t\t\t<script>\n\t\t\t\t\t\t\twindow.hsFormsOnReady = window.hsFormsOnReady || [];\n\t\t\t\t\t\t\twindow.hsFormsOnReady.push(()=>{\n\t\t\t\t\t\t\t\thbspt.forms.create({\n\t\t\t\t\t\t\t\t\tportalId: 242461771,\n\t\t\t\t\t\t\t\t\tformId: \"1f7a4dcb-eb56-45e5-bd4f-5921cbf714c1\",\n\t\t\t\t\t\t\t\t\ttarget: \"#hbspt-form-1779915200000-5538926103\",\n\t\t\t\t\t\t\t\t\tregion: \"na2\",\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t})});\n\t\t\t\t\t\t<\/script>\n\t\t\t\t\t\t<div class=\"hbspt-form\" id=\"hbspt-form-1779915200000-5538926103\"><\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-eael-table-of-content\">4. Tratamento t\u00e9rmico<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A\u00e7os inoxid\u00e1veis martens\u00edticos, incluindo o a\u00e7o inoxid\u00e1vel 420, s\u00e3o endurecidos por aquecimento acima de sua temperatura de transforma\u00e7\u00e3o para atingir uma estrutura totalmente austen\u00edtica, seguido de resfriamento r\u00e1pido em \u00f3leo ou ar. Apresentam baixa condutividade t\u00e9rmica, o que pode levar a um aquecimento irregular durante o aquecimento r\u00e1pido ou t\u00eampera, resultando em distor\u00e7\u00e3o, empenamento ou rachaduras. Portanto, recomendamos fortemente o pr\u00e9-aquecimento.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O\u00a0<em>Tratamento t\u00e9rmico de a\u00e7o inoxid\u00e1vel 420<\/em>\u00a0envolve austenitiza\u00e7\u00e3o, t\u00eampera e revenimento para otimizar suas propriedades mec\u00e2nicas, particularmente ductilidade e tenacidade.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"5-eael-table-of-content\">4.1 Endurecimento (Austenitiza\u00e7\u00e3o)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A temperatura de endurecimento do a\u00e7o 420 \u00e9&nbsp;<strong>975 \u00b0C a 1075 \u00b0C (1787 \u00b0F a 1967 \u00b0F)<\/strong>, embora algumas fontes a indiquem entre 954 \u00b0C e 1010 \u00b0C (1750 \u00b0F e 1850 \u00b0F). No entanto, com base em nossa experi\u00eancia, a primeira faixa \u00e9 mais apropriada.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O tempo de imers\u00e3o \u00e9 normalmente de cerca de&nbsp;<strong>30 minutos por polegada (1,2 minutos por mil\u00edmetro) de espessura<\/strong>&nbsp;na temperatura de endurecimento.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To prevent decarburization, 420 stainless steel should be hardened in a controlled neutral atmosphere, in a vacuum, or in a neutral-salt furnace.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"6-eael-table-of-content\">4.2 Resfriamento r\u00e1pido<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Para pe\u00e7as complexas ou com formas irregulares, sugerimos a t\u00eampera ao ar para minimizar a deforma\u00e7\u00e3o e reduzir o risco de trincas. Se for necess\u00e1ria uma dureza maior, optamos pela t\u00eampera em \u00f3leo. O processo de t\u00eampera envolve o resfriamento do material at\u00e9&nbsp;<strong>66 \u00b0C (150 \u00b0F)<\/strong>&nbsp;quando resfriado ao ar, ou para&nbsp;<strong>66-93 \u00b0C (150-200 \u00b0F)<\/strong>&nbsp;quando temperado em \u00f3leo.&nbsp;<strong>Observe que o tratamento de t\u00eampera deve ser realizado imediatamente ap\u00f3s a t\u00eampera.<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"7-eael-table-of-content\">4.3&nbsp;<strong>T\u00eampera<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><em>T\u00eampera<\/em>\u00a0pode melhorar a tenacidade e a resist\u00eancia do 420 e ajustar sua dureza. O material de a\u00e7o 420 deve passar por pelo menos<strong>\u00a0dois ciclos de t\u00eampera<\/strong>, ou mesmo tr\u00eas. Para a maioria das aplica\u00e7\u00f5es, a temperatura m\u00ednima de revenimento \u00e9\u00a0<strong>204\u00b0C (400\u00b0F)<\/strong>. O tempo de imers\u00e3o \u00e9\u00a0<strong>2 horas por polegada (4,7 minutos por mil\u00edmetro) de espessura<\/strong>\u00a0na temperatura especificada. Entre cada ciclo de t\u00eampera, as pe\u00e7as devem esfriar naturalmente at\u00e9 a temperatura ambiente.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Efeito da temperatura de revenimento nas propriedades:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Dureza ap\u00f3s diferentes temperaturas de revenimento<\/strong>: 420 stainless steel has a minimum hardness of 52 HRC at 149 \u00b0C (300 \u00b0F), 50 HRC at 204 \u00b0C (400 \u00b0F), and 48 HRC at 316 \u00b0C (600 \u00b0F).<\/li>\n\n\n\n<li><strong>Resist\u00eancia \u00e0 fragilidade e corros\u00e3o por t\u00eampera<\/strong>e: 420 steel exhibits temper embrittlement.\u00a0<strong>N\u00c3O temperar em temperaturas ACIMA DE 427\u00b0C (800\u00b0F)<\/strong>, pois essa faixa de temperatura pode resultar em uma redu\u00e7\u00e3o significativa na resist\u00eancia ao impacto e \u00e0 corros\u00e3o. Essa redu\u00e7\u00e3o \u00e9 atribu\u00edda \u00e0 precipita\u00e7\u00e3o de carbonetos de cromo mais grosseiros (Cr23C6), que podem criar regi\u00f5es com deple\u00e7\u00e3o de cromo ao redor dos carbonetos. Esse efeito negativo desaparece quando a temperatura de revenimento \u00e9 de 593 \u00b0C (1100 \u00b0F) ou superior. Em temperaturas acima de 600 \u00b0C, acredita-se que a difus\u00e3o de cromo &quot;recupere&quot; essas zonas depletadas, restaurando a resist\u00eancia \u00e0 corros\u00e3o. Dentro dessa faixa de temperatura, a tenacidade do a\u00e7o 420 aumenta, mas sua dureza diminui.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"8-eael-table-of-content\">4.4\u00a0Stress Relieving (Unhardened Material)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Para pe\u00e7as de a\u00e7o inoxid\u00e1vel 420 n\u00e3o endurecidas, o al\u00edvio de tens\u00f5es pode ser realizado por aquecimento lento at\u00e9&nbsp;<strong>677 \u00b0C (1250 \u00b0F) e imers\u00e3o por 2 horas por polegada de espessura<\/strong>, seguido de um resfriamento lento no forno at\u00e9 a temperatura ambiente.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"9-eael-table-of-content\">5. Notas equivalentes<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>JIS (Jap\u00e3o):<\/strong>SUS420J1, SUS420J2<\/li>\n\n\n\n<li><strong>DIN (Alemanha):<\/strong>4021, 1.4028, 1.2083 (X42Cr13 \u2013 frequentemente usado para moldes)<\/li>\n\n\n\n<li><strong>GB(China):<\/strong>\u00a0<em>2Cr13<\/em> e <em>4Cr13<\/em>.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"10-eael-table-of-content\">6. Compare o a\u00e7o inoxid\u00e1vel 420 com outros a\u00e7os<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"11-eael-table-of-content\">6.1 A\u00e7o inoxid\u00e1vel 420 vs 304<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">420 steel is a hard, strong, wear-resistant, and magnetic martensitic alloy, best suited for applications requiring high performance after heat treatment. However, it requires careful handling during welding and tempering for optimal corrosion resistance. 304 steel, on the other hand, is a ductile, formable, generally non-magnetic austenitic alloy prized for its versatile corrosion resistance, excellent weldability, and suitability for a broad range of applications, including high-temperature use. <\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Recurso<\/td><td>420<\/td><td>304<\/td><\/tr><tr><td>Classifica\u00e7\u00e3o<\/td><td>Martens\u00edtico<\/td><td>Austen\u00edtico<\/td><\/tr><tr><td>Magn\u00e9tico?<\/td><td>Sim (ferromagn\u00e9tico)<\/td><td>Normalmente n\u00e3o (n\u00e3o magn\u00e9tico em condi\u00e7\u00f5es recozidas)<\/td><\/tr><tr><td>Endurec\u00edvel?<\/td><td>Sim, por tratamento t\u00e9rmico (t\u00eampera e revenimento)<\/td><td>N\u00e3o, endurece por trabalho a frio<\/td><\/tr><tr><td>Conte\u00fado de carbono<\/td><td>Mais alto (0,15% min, frequentemente 0,2-0,4%)<\/td><td>Inferior (m\u00e1x. 0,08%)<\/td><\/tr><tr><td>Teor de n\u00edquel<\/td><td>Muito baixo ou ausente<\/td><td>Significativo (8-12%)<\/td><\/tr><tr><td>Dureza M\u00e1xima<\/td><td>Muito mais alto (por exemplo, C-54 a C-60 ap\u00f3s tratamento t\u00e9rmico)<\/td><td>Inferior (m\u00e1x. B-92 recozido)<\/td><\/tr><tr><td>Corros\u00e3o<\/td><td>Moderado, dependente de tratamento t\u00e9rmico; inferior a 304<\/td><td>Bom, \u201cmelhor polivalente\u201d; superior a 420<\/td><\/tr><tr><td>Soldabilidade<\/td><td>Dif\u00edcil de soldar<\/td><td>Excelente soldabilidade (especialmente 304L)<\/td><\/tr><tr><td>Robustez<\/td><td>Menor resist\u00eancia ao impacto, suscet\u00edvel \u00e0 fragilidade por t\u00eampera<\/td><td>Alta ductilidade e tenacidade<\/td><\/tr><tr><td>Usos t\u00edpicos<\/td><td>Talheres, instrumentos cir\u00fargicos, moldes, hastes, v\u00e1lvulas<\/td><td>Processamento de alimentos, eletrodom\u00e9sticos, exaust\u00e3o automotiva, uso geral<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"12-eael-table-of-content\">6.2 A\u00e7o inoxid\u00e1vel 420 vs 316<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">420 steel is a hardenable martensitic stainless steel with high strength, hardness, and wear resistance, but it has moderate corrosion resistance and is heat-treatment-sensitive. In contrast, 316 steel is a non-hardenable austenitic stainless steel with excellent corrosion resistance, particularly in chloride environments, where it exhibits outstanding resistance to pitting and crevice corrosion.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Recurso<\/td><td>420<\/td><td>316&nbsp;<\/td><\/tr><tr><td>Classifica\u00e7\u00e3o<\/td><td>Martens\u00edtico<\/td><td>Austen\u00edtico<\/td><\/tr><tr><td>Temperabilidade<\/td><td>Pode ser endurecido por tratamento t\u00e9rmico acima de 50 HRC.<\/td><td>N\u00e3o pode ser endurecido por tratamento t\u00e9rmico; pode ser endurecido por trabalho a frio.<\/td><\/tr><tr><td>Dureza<\/td><td>Recozido: B-92 Rockwell. Tratado termicamente: C-54 Rockwell.<\/td><td>Recozido: B-80 Rockwell (at\u00e9 B-90).<\/td><\/tr><tr><td>Resist\u00eancia \u00e0 trac\u00e7\u00e3o<\/td><td>Recozido: 95 ksi. Tratado termicamente: at\u00e9 250 ksi.<\/td><td>Recozido: 75 ksi (316), 70 ksi (316L).<\/td><\/tr><tr><td>Resist\u00eancia ao escoamento<\/td><td>Recozido: 50 ksi. Tratado termicamente: at\u00e9 200 ksi.<\/td><td>Recozido: 30 ksi (316), 25 ksi (316L).<\/td><\/tr><tr><td>Ductilidade<\/td><td>Boa tenacidade, mas a ductilidade diminui \u00e0 medida que a dureza aumenta.<\/td><td>Excelente ductilidade e alto alongamento, mesmo em baixas temperaturas.<\/td><\/tr><tr><td>Resist\u00eancia \u00e0 corros\u00e3o<\/td><td>Bom, mas geralmente inferior aos a\u00e7os austen\u00edticos. O revenimento pode reduzir a resist\u00eancia.<\/td><td>Excelente, especialmente contra corros\u00e3o por pites e frestas devido ao molibd\u00eanio.<\/td><\/tr><tr><td>Soldabilidade<\/td><td>Dif\u00edcil de soldar; n\u00e3o recomendado para aplica\u00e7\u00f5es soldadas.<\/td><td>Boa soldabilidade, especialmente o grau &#039;L&#039; (316L).<\/td><\/tr><tr><td>Propriedades magn\u00e9ticas<\/td><td>Ferromagn\u00e9tico.<\/td><td>Geralmente n\u00e3o magn\u00e9tico (pode ficar levemente magn\u00e9tico ap\u00f3s trabalho a frio).<\/td><\/tr><tr><td>Aplica\u00e7\u00f5es comuns<\/td><td>Talheres, instrumentos cir\u00fargicos, moldes, eixos, pe\u00e7as de v\u00e1lvulas.<\/td><td>Processamento qu\u00edmico, aplica\u00e7\u00f5es mar\u00edtimas, revestimento arquitet\u00f4nico, implantes m\u00e9dicos.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"764\" height=\"764\" data-id=\"9160\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif\" alt=\"A\u00e7o inoxid\u00e1vel 420\" class=\"wp-image-9160\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif 764w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel-300x300.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel-150x150.avif 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel-12x12.avif 12w\" sizes=\"auto, (max-width: 764px) 100vw, 764px\" \/><figcaption class=\"wp-element-caption\">A\u00e7o inoxid\u00e1vel 420<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" data-id=\"6063\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/2Cr13-tool-steel.avif\" alt=\"A\u00e7o ferramenta 2Cr13\" class=\"wp-image-6063\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/2Cr13-tool-steel.avif 500w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/2Cr13-tool-steel-300x300.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/2Cr13-tool-steel-150x150.avif 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/2Cr13-tool-steel-12x12.avif 12w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><figcaption class=\"wp-element-caption\">A\u00e7o inoxid\u00e1vel 2Cr12<\/figcaption><\/figure>\n<\/figure>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-3e41869c wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Envie sua consulta para a\u00e7o inoxid\u00e1vel 420\/2Cr13 agora<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center\" id=\"13-eael-table-of-content\">Perguntas frequentes<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1755567391384\"><strong class=\"schema-faq-question\"><strong>O que \u00e9 a\u00e7o inoxid\u00e1vel 420?<\/strong><\/strong> <p class=\"schema-faq-answer\">420 stainless steel is a martensitic stainless steel and the most commonly used. It has similar corrosion resistance to 410 stainless steel, but with higher strength and hardness. It is also widely known as \u201ccutlery stainless steel.\u201d<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567393846\"><strong class=\"schema-faq-question\"><strong>Quais s\u00e3o as principais propriedades do a\u00e7o inoxid\u00e1vel 420?<\/strong><\/strong> <p class=\"schema-faq-answer\">Possui dureza de 52-55 HRC (ou Rockwell C55 quando endurecido e com al\u00edvio de tens\u00f5es), densidade de 0,280 lbs\/in\u00b3 (7,74 g\/cm\u00b3) e resist\u00eancia \u00e0 tra\u00e7\u00e3o de 275.000 psi (230 ksi ou 1586 MPa quando endurecido e com al\u00edvio de tens\u00f5es). \u00c9 magn\u00e9tico tanto em condi\u00e7\u00f5es recozidas quanto temperadas. Al\u00e9m disso, possui boas propriedades de usinagem, \u00e9 endurec\u00edvel, polivel e condicionalmente resistente a \u00e1cidos.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567394643\"><strong class=\"schema-faq-question\"><strong>Qual \u00e9 a composi\u00e7\u00e3o qu\u00edmica do a\u00e7o inoxid\u00e1vel 420?<\/strong><\/strong> <p class=\"schema-faq-answer\">Its chemical makeup typically includes Carbon (C) at 0.15\u20130.36% (or a minimum of 0.15%, up to 0.5% in some variations), Chromium (Cr) at 12\u201314%, and a maximum of 1.0% each for Silicon (Si) and Manganese (Mn). Phosphorus (P) is typically 0.04% Max, and Sulfur (S) is 0.03% Max.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567395361\"><strong class=\"schema-faq-question\"><strong>O a\u00e7o inoxid\u00e1vel 420 enferruja?<\/strong><\/strong> <p class=\"schema-faq-answer\">O a\u00e7o inoxid\u00e1vel 420 possui excelente resist\u00eancia \u00e0 corros\u00e3o. Resiste \u00e0 corros\u00e3o atmosf\u00e9rica, \u00e1gua doce, vapor, gasolina, \u00e1lcool, sangue, suor, gordura e alimentos.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567396093\"><strong class=\"schema-faq-question\"><strong>O a\u00e7o inoxid\u00e1vel 420 \u00e9 magn\u00e9tico?<\/strong><\/strong> <p class=\"schema-faq-answer\">Sim, o a\u00e7o inoxid\u00e1vel 420 \u00e9 atra\u00eddo por um \u00edm\u00e3 e \u00e9 magn\u00e9tico tanto no estado recozido quanto no endurecido.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567397185\"><strong class=\"schema-faq-question\"><strong>Qual \u00e9 a dureza do a\u00e7o inoxid\u00e1vel 420?<\/strong><\/strong> <p class=\"schema-faq-answer\">A dureza do a\u00e7o inoxid\u00e1vel 420 varia de 52 a 55 HRC.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567397961\"><strong class=\"schema-faq-question\"><strong>What are the international standards equivalent to 420 stainless steel?<\/strong><\/strong> <p class=\"schema-faq-answer\">420 stainless steel has several equivalent international standards, including\u00a0AISI 420,\u00a0BS970 420S37, 420S45,\u00a0DIN 1.4021, 1.4025, 1.4034,\u00a0AFNOR Z30C13, Z40C14, and\u00a0JIS SUS 4200JI, 420J2. It is also covered by the ASTM A176 and AMS 5506 specifications, and its UNS number is S42000.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567398578\"><strong class=\"schema-faq-question\"><strong>Quais s\u00e3o os usos t\u00edpicos do a\u00e7o inoxid\u00e1vel 420?<\/strong><\/strong> <p class=\"schema-faq-answer\">Os usos t\u00edpicos incluem a fabrica\u00e7\u00e3o de rolamentos, pe\u00e7as de v\u00e1lvulas, conectores e conex\u00f5es de mangueiras. Tamb\u00e9m \u00e9 amplamente utilizado em talheres, instrumentos cir\u00fargicos e odontol\u00f3gicos, tesouras, fitas e r\u00e9guas. \u00c9 considerado ideal para aplica\u00e7\u00f5es que exigem boa resist\u00eancia \u00e0 corros\u00e3o e alta dureza.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567500191\"><strong class=\"schema-faq-question\"><strong>O a\u00e7o inoxid\u00e1vel 420 \u00e9 adequado para facas?<\/strong><\/strong> <p class=\"schema-faq-answer\">Sim, o a\u00e7o inoxid\u00e1vel 420, particularmente a variante 420HC (alto carbono) com tratamento t\u00e9rmico adequado, \u00e9 considerado adequado e pode ser um excelente a\u00e7o para facas. Embora alguns a\u00e7os 420 gen\u00e9ricos possam ser considerados obsoletos para facas de uso geral devido \u00e0 sua maciez e menor reten\u00e7\u00e3o do fio, o 420HC \u00e9 conhecido por ser resistente, inoxid\u00e1vel, f\u00e1cil de afiar e ter uma reten\u00e7\u00e3o de fio respeit\u00e1vel. Empresas como a Buck Knives alcan\u00e7aram um desempenho s\u00f3lido com o 420HC por meio de tratamentos t\u00e9rmicos especializados. <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567501208\"><strong class=\"schema-faq-question\"><strong>O a\u00e7o inoxid\u00e1vel 420 \u00e9 considerado \u201cecon\u00f4mico\u201d ou \u201cde baixa qualidade\u201d para facas?<\/strong><\/strong> <p class=\"schema-faq-answer\">While often referred to as \u201cbudget steel because it is an older alloy, 420 stainless steel is not necessarily low-quality. Its performance heavily depends on the heat treatment it receives; with proper heat treatment (especially for 420HC), it can be a solid, usable, and even underrated performer in real-world applications. It offers good corrosion resistance, toughness, and ease of sharpening, making it a viable option for everyday carry (EDC) knives.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567502958\"><strong class=\"schema-faq-question\"><strong>O a\u00e7o inoxid\u00e1vel 420 \u00e9 adequado para espadas?<\/strong><\/strong> <p class=\"schema-faq-answer\">No, 420 stainless steel is generally not recommended for functional swords and is often found in \u201cwall hangers\u201d (decorative swords). The carbon content of 420 can be fairly low, making the blade softer. Functional swords are typically made from carbon steel because it is cheaper, easier to forge, and easier to heat-treat to achieve the required performance. Stainless steel swords are broadly viewed as too brittle and prone to chipping or shattering for practical use.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567544563\"><strong class=\"schema-faq-question\"><strong>O a\u00e7o inoxid\u00e1vel 420 pode ser usado com alum\u00ednio?<\/strong><\/strong> <p class=\"schema-faq-answer\">There are\u00a0conflicting views\u00a0on the compatibility of stainless steel (including 420) with aluminum, particularly in exterior or wet environments, due to the risk of\u00a0galvanic corrosion. Some sources indicate that stainless steel can be worse than galvanized steel when in contact with aluminum, leading to severe corrosion of aluminum in marine or wet conditions. Conversely, other sources suggest stainless steel bolts might be used to avoid galvanic reactions, or that reactions are minimal in mild conditions due to aluminum\u2019s protective oxide layer. To mitigate potential galvanic corrosion, it is widely recommended to use\u00a0isolation washers made of plastic or rubber\u00a0between the two metals to minimize direct contact.<br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567545393\"><strong class=\"schema-faq-question\"><strong>Como o tratamento t\u00e9rmico afeta o desempenho do a\u00e7o inoxid\u00e1vel 420?<\/strong><\/strong> <p class=\"schema-faq-answer\">O tratamento t\u00e9rmico \u00e9 crucial para aprimorar as caracter\u00edsticas de desempenho do a\u00e7o inoxid\u00e1vel 420. Sua m\u00e1xima resist\u00eancia \u00e0 corros\u00e3o s\u00f3 \u00e9 alcan\u00e7ada quando o a\u00e7o est\u00e1 totalmente temperado ou temperado e com al\u00edvio de tens\u00f5es; geralmente, nunca \u00e9 utilizado na condi\u00e7\u00e3o recozida para obter a resist\u00eancia ideal \u00e0 corros\u00e3o. O tratamento t\u00e9rmico adequado pode melhorar significativamente propriedades como dureza e reten\u00e7\u00e3o de arestas, especialmente para a variante 420HC. Quando o a\u00e7o 420 \u00e9 macio (recozido), \u00e9 flex\u00edvel; quando temperado, torna-se bastante duro.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567581789\"><strong class=\"schema-faq-question\"><strong>Como o a\u00e7o inoxid\u00e1vel 420 \u00e9 tratado termicamente?<\/strong><\/strong> <p class=\"schema-faq-answer\">Os processos padr\u00e3o de tratamento t\u00e9rmico para a\u00e7o inoxid\u00e1vel 420 incluem:<br>Recozimento (para m\u00e1xima maciez): Aquecer uniformemente a 1500 \u2013 1650\u00b0F (816 \u2013 899\u00b0C) e esfriar lentamente no forno.<br>Recozimento do processo: aquecer a 1350 \u2013 1450\u00b0F (732 \u2013 788\u00b0C) e depois resfriar ao ar.<br>Endurecimento: Pr\u00e9-aque\u00e7a e aque\u00e7a a 1800 \u2013 1950 \u00b0F (982 \u2013 1066 \u00b0C), deixe de molho nessa temperatura e depois resfrie ao ar ou resfrie em \u00f3leo morno.<br>Stress Relieving:\u00a0Heat to 300\u2013800\u00b0F (149\u2013427\u00b0C) for 1-3 hours, then cool in air or quench in oil or water.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567582585\"><strong class=\"schema-faq-question\"><strong>O a\u00e7o inoxid\u00e1vel 420 \u00e9 sold\u00e1vel?<\/strong><\/strong> <p class=\"schema-faq-answer\">A s\u00e9rie de a\u00e7os inoxid\u00e1veis martens\u00edticos, incluindo o tipo 420, apresenta soldabilidade limitada. Se for necess\u00e1ria soldagem, recomenda-se pr\u00e9-aquecer a 260 \u00b0C (550 \u00b0F). Tamb\u00e9m \u00e9 recomend\u00e1vel realizar tratamento t\u00e9rmico ap\u00f3s a soldagem.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567583438\"><strong class=\"schema-faq-question\"><strong>O a\u00e7o inoxid\u00e1vel 420 \u00e9 mold\u00e1vel?<\/strong><\/strong> <p class=\"schema-faq-answer\">Sim, se o a\u00e7o inoxid\u00e1vel 420 for recozido para m\u00e1xima maciez, ele pode ser moderadamente trefilado e conformado.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567627345\"><strong class=\"schema-faq-question\"><strong>Quais s\u00e3o as limita\u00e7\u00f5es de temperatura para o a\u00e7o inoxid\u00e1vel 420?<\/strong><\/strong> <p class=\"schema-faq-answer\">O a\u00e7o inoxid\u00e1vel 420 normalmente n\u00e3o \u00e9 usado em temperaturas superiores a 427 \u00b0C (800 \u00b0F). Isso ocorre porque temperaturas mais altas levam ao amolecimento r\u00e1pido e \u00e0 perda de sua resist\u00eancia \u00e0 corros\u00e3o.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567629160\"><strong class=\"schema-faq-question\"><strong>Qual \u00e9 a diferen\u00e7a entre o a\u00e7o inoxid\u00e1vel 420 e 420HC, particularmente em rela\u00e7\u00e3o ao teor de carbono?<\/strong><\/strong> <p class=\"schema-faq-answer\">A principal diferen\u00e7a reside no teor de carbono, que impacta significativamente seu desempenho. O a\u00e7o 420 gen\u00e9rico (e o 420J) normalmente apresenta um teor de carbono menor, em torno de 0,15%. Em contraste, o a\u00e7o 420HC (alto teor de carbono) apresenta um teor de carbono notavelmente maior, geralmente em torno de 0,46%. Esse maior teor de carbono, especialmente quando combinado com um tratamento t\u00e9rmico especializado, confere ao a\u00e7o 420HC maior dureza, melhor reten\u00e7\u00e3o de fio e desempenho mais robusto para aplica\u00e7\u00f5es como facas. A varia\u00e7\u00e3o no teor de carbono entre os diferentes graus de a\u00e7o 420 explica por que as fontes podem relatar diferentes porcentagens de carbono para o a\u00e7o &quot;420&quot;.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567651992\"><strong class=\"schema-faq-question\"><strong>Como o a\u00e7o inoxid\u00e1vel 420 se compara ao a\u00e7o inoxid\u00e1vel 440?<\/strong><\/strong> <p class=\"schema-faq-answer\">Tanto o 420 quanto o 440 s\u00e3o geralmente considerados a\u00e7os inoxid\u00e1veis &quot;econ\u00f4micos&quot; decentes e utiliz\u00e1veis. O 420 (especificamente o 420HC) \u00e9 descrito como muito tenaz, com reten\u00e7\u00e3o de aresta respeit\u00e1vel. O 440 (particularmente o 440C) pode atingir durezas mais altas (58 HRC ou superior) e normalmente oferece melhor reten\u00e7\u00e3o de aresta, embora possa n\u00e3o ser t\u00e3o tenaz quanto o 420. O 440C tamb\u00e9m \u00e9 um a\u00e7o cromo martens\u00edtico resistente \u00e0 corros\u00e3o com alta resist\u00eancia ao desgaste. A classe espec\u00edfica e o tratamento t\u00e9rmico s\u00e3o importantes para comparar seu desempenho real.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567652987\"><strong class=\"schema-faq-question\"><strong>Como a resist\u00eancia \u00e0 corros\u00e3o do a\u00e7o inoxid\u00e1vel 420 se compara \u00e0 do a\u00e7o inoxid\u00e1vel 316?<\/strong><\/strong> <p class=\"schema-faq-answer\">Embora o a\u00e7o inoxid\u00e1vel 420 ofere\u00e7a boa resist\u00eancia \u00e0 corros\u00e3o em compara\u00e7\u00e3o a outros a\u00e7os para talheres, sua resist\u00eancia \u00e0 corros\u00e3o \u00e9 inferior \u00e0 do a\u00e7o inoxid\u00e1vel 316. SAE 316 e 316L (frequentemente chamados de &quot;grau mar\u00edtimo&quot;) s\u00e3o ligas de cromo, n\u00edquel e molibd\u00eanio conhecidas por sua resist\u00eancia superior e resist\u00eancia \u00e0 corros\u00e3o, sendo consideradas biocompat\u00edveis quando produzidas de acordo com padr\u00f5es espec\u00edficos.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755567683448\"><strong class=\"schema-faq-question\"><strong>O a\u00e7o inoxid\u00e1vel 420 \u00e9 bom?<\/strong><\/strong> <p class=\"schema-faq-answer\">O a\u00e7o 420 \u00e9 de fato um bom a\u00e7o inoxid\u00e1vel, oferecendo um n\u00edvel satisfat\u00f3rio de resist\u00eancia \u00e0 corros\u00e3o para uma ampla gama de aplica\u00e7\u00f5es, especialmente quando tratado termicamente de forma adequada. Sua combina\u00e7\u00e3o de resist\u00eancia \u00e0 corros\u00e3o com elevada dureza e resist\u00eancia ao desgaste o torna um material vers\u00e1til, principalmente para cutelaria e certas ferramentas.\u00a0<\/p> <\/div> <\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading has-text-align-center\">Obtenha um or\u00e7amento competitivo para a\u00e7o inoxid\u00e1vel 420<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Com mais de 20 anos de experi\u00eancia em forjamento, a Aobo Steel \u00e9 sua parceira de confian\u00e7a para a\u00e7o inoxid\u00e1vel 420 de alto desempenho. Fornecemos n\u00e3o apenas materiais, mas tamb\u00e9m solu\u00e7\u00f5es. Aproveite nosso profundo conhecimento do setor e nossa cadeia de suprimentos confi\u00e1vel para o sucesso do seu projeto.<\/p>\n\n\n\n<p class=\"has-text-align-center has-ast-global-color-0-color has-text-color has-link-color wp-elements-46b9b5264da3cea9da6d0e3e39bc1910 wp-block-paragraph\"><strong>\u2709 Entre em contato conosco preenchendo o formul\u00e1rio abaixo.<\/strong><\/p>\n\n\n\n<div class=\"wp-block-leadin-hubspot-form-block\">\n\t\t\t\t\t\t<script>\n\t\t\t\t\t\t\twindow.hsFormsOnReady = window.hsFormsOnReady || [];\n\t\t\t\t\t\t\twindow.hsFormsOnReady.push(()=>{\n\t\t\t\t\t\t\t\thbspt.forms.create({\n\t\t\t\t\t\t\t\t\tportalId: 242461771,\n\t\t\t\t\t\t\t\t\tformId: \"1f7a4dcb-eb56-45e5-bd4f-5921cbf714c1\",\n\t\t\t\t\t\t\t\t\ttarget: \"#hbspt-form-1779915200000-2085614710\",\n\t\t\t\t\t\t\t\t\tregion: \"na2\",\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t})});\n\t\t\t\t\t\t<\/script>\n\t\t\t\t\t\t<div class=\"hbspt-form\" id=\"hbspt-form-1779915200000-2085614710\"><\/div><\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>420 stainless steel is a&nbsp;martensitic&nbsp;stainless steel, which is a type of iron-chromium alloy.&nbsp;It is part of the&nbsp;400-series&nbsp;stainless steel classifications.&nbsp;Unlike some other stainless steel types, AISI 420 stainless steel is&nbsp;magnetic. 1. Applications 2.\u00a0420 Stainless Steel Composition Element Carbon (C) Manganese (Mn) Silicon (Si) Phosphorus (P) Sulfur (S) Chromium (Cr) Compositional&nbsp; 0.15- 0.40% \u2264 1.00% \u2264 0.50% [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":9160,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"landing-page","_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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is 420 stainless steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"420 stainless steel is a martensitic stainless steel and the most commonly used. It has similar corrosion resistance to 410 stainless steel, but with higher strength and hardness. It is also widely known as \u201ccutlery stainless steel.\u201d\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567393846\",\"position\":2,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567393846\",\"name\":\"What are the key properties of 420 stainless steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It has a hardness of 52-55 HRC (or Rockwell C55 when hardened and stress relieved), a density of 0.280 lbs\\\/in\u00b3 (7.74 g\\\/cm\u00b3), and a tensile strength of 275,000 psi (230 ksi or 1586 MPa when hardened and stress relieved). It is magnetic in both annealed and hardened conditions. Additionally, it possesses good machining properties, is hardenable, polishable, and conditionally acid-resistant.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567394643\",\"position\":3,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567394643\",\"name\":\"What is the chemical composition of 420 stainless steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Its chemical makeup typically includes Carbon (C) at 0.15\u20130.36% (or a minimum of 0.15%, up to 0.5% in some variations), Chromium (Cr) at 12\u201314%, and a maximum of 1.0% each for Silicon (Si) and Manganese (Mn). Phosphorus (P) is typically 0.04% Max, and Sulfur (S) is 0.03% Max.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567395361\",\"position\":4,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567395361\",\"name\":\"Does 420 stainless steel rust?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"420 stainless steel has excellent corrosion resistance. It can resist corrosion from the atmosphere, fresh water, steam, gasoline, alcohol, blood, sweat, grease, and food.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567396093\",\"position\":5,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567396093\",\"name\":\"Is 420 stainless steel magnetic?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, 420 stainless steel is attracted to a magnet and is magnetic in both its annealed and hardened states.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567397185\",\"position\":6,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567397185\",\"name\":\"What is the hardness of 420 stainless steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The hardness of 420 stainless steel ranges from 52 to 55 HRC.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567397961\",\"position\":7,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567397961\",\"name\":\"What are the international standards equivalent to 420 stainless steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"420 stainless steel has several equivalent international standards, including\u00a0AISI 420,\u00a0BS970 420S37, 420S45,\u00a0DIN 1.4021, 1.4025, 1.4034,\u00a0AFNOR Z30C13, Z40C14, and\u00a0JIS SUS 4200JI, 420J2. 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It is considered ideal for applications that demand both good corrosion resistance and high hardness.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567500191\",\"position\":9,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567500191\",\"name\":\"Is 420 stainless steel suitable for knives?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, 420 stainless steel, particularly the 420HC (High Carbon) variant with proper heat treatment, is considered suitable and can be an excellent steel for knives. While some generic 420 might be considered outdated for general-use knives due to its softness and poorer edge retention, 420HC is known for being tough, stainless, easy to sharpen, and having respectable edge retention. Companies like Buck Knives have achieved solid performance with 420HC through specialized heat treatments. \",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567501208\",\"position\":10,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567501208\",\"name\":\"Is 420 stainless steel considered \u201cbudget\u201d or \u201clow-quality\u201d for knives?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"While often referred to as \u201cbudget steel because it is an older alloy, 420 stainless steel is not necessarily low-quality. Its performance heavily depends on the heat treatment it receives; with proper heat treatment (especially for 420HC), it can be a solid, usable, and even underrated performer in real-world applications. It offers good corrosion resistance, toughness, and ease of sharpening, making it a viable option for everyday carry (EDC) knives.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567502958\",\"position\":11,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567502958\",\"name\":\"Is 420 stainless steel suitable for swords?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No, 420 stainless steel is generally not recommended for functional swords and is often found in \u201cwall hangers\u201d (decorative swords). The carbon content of 420 can be fairly low, making the blade softer. Functional swords are typically made from carbon steel because it is cheaper, easier to forge, and easier to heat-treat to achieve the required performance. Stainless steel swords are broadly viewed as too brittle and prone to chipping or shattering for practical use.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567544563\",\"position\":12,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567544563\",\"name\":\"Can 420 stainless steel be used with aluminum?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"There are\u00a0conflicting views\u00a0on the compatibility of stainless steel (including 420) with aluminum, particularly in exterior or wet environments, due to the risk of\u00a0galvanic corrosion. Some sources indicate that stainless steel can be worse than galvanized steel when in contact with aluminum, leading to severe corrosion of aluminum in marine or wet conditions. Conversely, other sources suggest stainless steel bolts might be used to avoid galvanic reactions, or that reactions are minimal in mild conditions due to aluminum\u2019s protective oxide layer. To mitigate potential galvanic corrosion, it is widely recommended to use\u00a0isolation washers made of plastic or rubber\u00a0between the two metals to minimize direct contact.<br>\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567545393\",\"position\":13,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567545393\",\"name\":\"How does heat treatment affect 420 stainless steel\u2019s performance?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Heat treatment is crucial for enhancing the performance characteristics of 420 stainless steel. Its maximum corrosion resistance is achieved only when the steel is fully hardened or hardened and stress-relieved; it is generally never used in the annealed condition for optimal corrosion resistance. Proper heat treatment can significantly improve properties such as hardness and edge retention, especially for variant 420HC. When 420 is soft (annealed), it is flexible; when hardened, it becomes quite hard.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567581789\",\"position\":14,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567581789\",\"name\":\"How is 420 stainless steel heat-treated?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Standard heat treatment processes for 420 stainless steel include:<br>Annealing (for maximum softness):\u00a0Heat uniformly to\u00a01500 \u2013 1650\u00b0F (816 \u2013 899\u00b0C)\u00a0and cool slowly in the furnace.<br>Process Annealing:\u00a0Heat to\u00a01350 \u2013 1450\u00b0F (732 \u2013 788\u00b0C), then air cool.<br>Hardening:\u00a0Preheat, then heat to\u00a01800 \u2013 1950\u00b0F (982 \u2013 1066\u00b0C), soak at the temperature, and then air cool or quench in warm oil.<br>Stress Relieving:\u00a0Heat to 300\u2013800\u00b0F (149\u2013427\u00b0C) for 1-3 hours, then cool in air or quench in oil or water.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567582585\",\"position\":15,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567582585\",\"name\":\"Is 420 stainless steel weldable?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Martensitic stainless steel series, including type 420, has limited weldability. If welding is required, it is recommended to preheat to 550\u00b0F (260\u00b0C). It is also recommended to perform heat treatment after welding.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567583438\",\"position\":16,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567583438\",\"name\":\"Is 420 stainless steel formable?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, if 420 stainless steel is annealed for maximum softness, it can be moderately drawn and formed.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567627345\",\"position\":17,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567627345\",\"name\":\"What are the temperature limitations for 420 stainless steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"420 stainless steel is not typically used at temperatures exceeding 800\u00b0F (427\u00b0C). This is because higher temperatures lead to rapid softening and a loss of its corrosion resistance.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567629160\",\"position\":18,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567629160\",\"name\":\"What is the difference between 420 and 420HC stainless steel, particularly regarding carbon content?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The key difference lies in their carbon content, which significantly impacts their performance. Generic 420 (and 420J) typically has a lower carbon content, around 0.15%. In contrast, 420HC (High Carbon) has a notably higher carbon content, usually around 0.46%. This higher carbon content, especially when combined with specialized heat treatment, provides 420HC with improved hardness, better edge retention, and more robust performance for applications like knives. The variation in carbon content among different 420 grades explains why sources may report different carbon percentages for \u201c420\u201d steel.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567651992\",\"position\":19,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567651992\",\"name\":\"How does 420 stainless steel compare to 440 stainless steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Both 420 and 440 are generally considered\u00a0decent and usable \u201cbudget\u201d stainless steels. 420 (specifically 420HC) is described as very tough with respectable edge retention. 440 (particularly 440C) can achieve\u00a0higher hardness (58 HRC or above)\u00a0and typically offers better edge retention, though it may not be as tough as 420. 440C is also a corrosion-resistant martensitic chromium steel with high wear resistance. The specific grade and heat treatment are important for comparing their actual performance.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567652987\",\"position\":20,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567652987\",\"name\":\"How does 420 stainless steel\u2019s corrosion resistance compare to 316 stainless steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"While 420 stainless steel offers good corrosion resistance compared to other cutlery steels, its\u00a0corrosion resistance is inferior to 316 stainless steel. SAE 316 and 316L (often called \u201cmarine grade\u201d) are chromium, nickel, molybdenum alloys known for their superior strength and corrosion resistance, and are considered biocompatible when produced to specific standards.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567683448\",\"position\":21,\"url\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel\\\/#faq-question-1755567683448\",\"name\":\"Is 420 a good stainless steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"420 steel is indeed a good stainless steel, offering a satisfactory level of corrosion resistance for a wide range of applications, particularly when properly heat-treated. 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que \u00e9 a\u00e7o inoxid\u00e1vel 420?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"420 stainless steel is a martensitic stainless steel and the most commonly used. It has similar corrosion resistance to 410 stainless steel, but with higher strength and hardness. It is also widely known as \u201ccutlery stainless steel.\u201d","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567393846","position":2,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567393846","name":"Quais s\u00e3o as principais propriedades do a\u00e7o inoxid\u00e1vel 420?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"It has a hardness of 52-55 HRC (or Rockwell C55 when hardened and stress relieved), a density of 0.280 lbs\/in\u00b3 (7.74 g\/cm\u00b3), and a tensile strength of 275,000 psi (230 ksi or 1586 MPa when hardened and stress relieved). It is magnetic in both annealed and hardened conditions. Additionally, it possesses good machining properties, is hardenable, polishable, and conditionally acid-resistant.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567394643","position":3,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567394643","name":"Qual \u00e9 a composi\u00e7\u00e3o qu\u00edmica do a\u00e7o inoxid\u00e1vel 420?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Its chemical makeup typically includes Carbon (C) at 0.15\u20130.36% (or a minimum of 0.15%, up to 0.5% in some variations), Chromium (Cr) at 12\u201314%, and a maximum of 1.0% each for Silicon (Si) and Manganese (Mn). Phosphorus (P) is typically 0.04% Max, and Sulfur (S) is 0.03% Max.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567395361","position":4,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567395361","name":"O a\u00e7o inoxid\u00e1vel 420 enferruja?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"420 stainless steel has excellent corrosion resistance. It can resist corrosion from the atmosphere, fresh water, steam, gasoline, alcohol, blood, sweat, grease, and food.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567396093","position":5,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567396093","name":"O a\u00e7o inoxid\u00e1vel 420 \u00e9 magn\u00e9tico?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, 420 stainless steel is attracted to a magnet and is magnetic in both its annealed and hardened states.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567397185","position":6,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567397185","name":"Qual \u00e9 a dureza do a\u00e7o inoxid\u00e1vel 420?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The hardness of 420 stainless steel ranges from 52 to 55 HRC.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567397961","position":7,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567397961","name":"What are the international standards equivalent to 420 stainless steel?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"420 stainless steel has several equivalent international standards, including\u00a0AISI 420,\u00a0BS970 420S37, 420S45,\u00a0DIN 1.4021, 1.4025, 1.4034,\u00a0AFNOR Z30C13, Z40C14, and\u00a0JIS SUS 4200JI, 420J2. It is also covered by the ASTM A176 and AMS 5506 specifications, and its UNS number is S42000.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567398578","position":8,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567398578","name":"Quais s\u00e3o os usos t\u00edpicos do a\u00e7o inoxid\u00e1vel 420?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Typical uses include bearing manufacture, valve parts, hose connectors &amp; fittings. It is also widely used for cutlery, surgical and dental instruments, scissors, tapes, and straight edges. It is considered ideal for applications that demand both good corrosion resistance and high hardness.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567500191","position":9,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567500191","name":"O a\u00e7o inoxid\u00e1vel 420 \u00e9 adequado para facas?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, 420 stainless steel, particularly the 420HC (High Carbon) variant with proper heat treatment, is considered suitable and can be an excellent steel for knives. While some generic 420 might be considered outdated for general-use knives due to its softness and poorer edge retention, 420HC is known for being tough, stainless, easy to sharpen, and having respectable edge retention. Companies like Buck Knives have achieved solid performance with 420HC through specialized heat treatments. ","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567501208","position":10,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567501208","name":"O a\u00e7o inoxid\u00e1vel 420 \u00e9 considerado \u201cecon\u00f4mico\u201d ou \u201cde baixa qualidade\u201d para facas?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"While often referred to as \u201cbudget steel because it is an older alloy, 420 stainless steel is not necessarily low-quality. Its performance heavily depends on the heat treatment it receives; with proper heat treatment (especially for 420HC), it can be a solid, usable, and even underrated performer in real-world applications. It offers good corrosion resistance, toughness, and ease of sharpening, making it a viable option for everyday carry (EDC) knives.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567502958","position":11,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567502958","name":"O a\u00e7o inoxid\u00e1vel 420 \u00e9 adequado para espadas?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"No, 420 stainless steel is generally not recommended for functional swords and is often found in \u201cwall hangers\u201d (decorative swords). The carbon content of 420 can be fairly low, making the blade softer. Functional swords are typically made from carbon steel because it is cheaper, easier to forge, and easier to heat-treat to achieve the required performance. Stainless steel swords are broadly viewed as too brittle and prone to chipping or shattering for practical use.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567544563","position":12,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567544563","name":"O a\u00e7o inoxid\u00e1vel 420 pode ser usado com alum\u00ednio?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"There are\u00a0conflicting views\u00a0on the compatibility of stainless steel (including 420) with aluminum, particularly in exterior or wet environments, due to the risk of\u00a0galvanic corrosion. Some sources indicate that stainless steel can be worse than galvanized steel when in contact with aluminum, leading to severe corrosion of aluminum in marine or wet conditions. Conversely, other sources suggest stainless steel bolts might be used to avoid galvanic reactions, or that reactions are minimal in mild conditions due to aluminum\u2019s protective oxide layer. To mitigate potential galvanic corrosion, it is widely recommended to use\u00a0isolation washers made of plastic or rubber\u00a0between the two metals to minimize direct contact.<br>","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567545393","position":13,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567545393","name":"Como o tratamento t\u00e9rmico afeta o desempenho do a\u00e7o inoxid\u00e1vel 420?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Heat treatment is crucial for enhancing the performance characteristics of 420 stainless steel. Its maximum corrosion resistance is achieved only when the steel is fully hardened or hardened and stress-relieved; it is generally never used in the annealed condition for optimal corrosion resistance. Proper heat treatment can significantly improve properties such as hardness and edge retention, especially for variant 420HC. When 420 is soft (annealed), it is flexible; when hardened, it becomes quite hard.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567581789","position":14,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567581789","name":"Como o a\u00e7o inoxid\u00e1vel 420 \u00e9 tratado termicamente?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Standard heat treatment processes for 420 stainless steel include:<br>Annealing (for maximum softness):\u00a0Heat uniformly to\u00a01500 \u2013 1650\u00b0F (816 \u2013 899\u00b0C)\u00a0and cool slowly in the furnace.<br>Process Annealing:\u00a0Heat to\u00a01350 \u2013 1450\u00b0F (732 \u2013 788\u00b0C), then air cool.<br>Hardening:\u00a0Preheat, then heat to\u00a01800 \u2013 1950\u00b0F (982 \u2013 1066\u00b0C), soak at the temperature, and then air cool or quench in warm oil.<br>Stress Relieving:\u00a0Heat to 300\u2013800\u00b0F (149\u2013427\u00b0C) for 1-3 hours, then cool in air or quench in oil or water.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567582585","position":15,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567582585","name":"O a\u00e7o inoxid\u00e1vel 420 \u00e9 sold\u00e1vel?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Martensitic stainless steel series, including type 420, has limited weldability. If welding is required, it is recommended to preheat to 550\u00b0F (260\u00b0C). It is also recommended to perform heat treatment after welding.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567583438","position":16,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567583438","name":"O a\u00e7o inoxid\u00e1vel 420 \u00e9 mold\u00e1vel?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, if 420 stainless steel is annealed for maximum softness, it can be moderately drawn and formed.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567627345","position":17,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567627345","name":"Quais s\u00e3o as limita\u00e7\u00f5es de temperatura para o a\u00e7o inoxid\u00e1vel 420?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"420 stainless steel is not typically used at temperatures exceeding 800\u00b0F (427\u00b0C). This is because higher temperatures lead to rapid softening and a loss of its corrosion resistance.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567629160","position":18,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567629160","name":"Qual \u00e9 a diferen\u00e7a entre o a\u00e7o inoxid\u00e1vel 420 e 420HC, particularmente em rela\u00e7\u00e3o ao teor de carbono?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The key difference lies in their carbon content, which significantly impacts their performance. Generic 420 (and 420J) typically has a lower carbon content, around 0.15%. In contrast, 420HC (High Carbon) has a notably higher carbon content, usually around 0.46%. This higher carbon content, especially when combined with specialized heat treatment, provides 420HC with improved hardness, better edge retention, and more robust performance for applications like knives. The variation in carbon content among different 420 grades explains why sources may report different carbon percentages for \u201c420\u201d steel.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567651992","position":19,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567651992","name":"Como o a\u00e7o inoxid\u00e1vel 420 se compara ao a\u00e7o inoxid\u00e1vel 440?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Both 420 and 440 are generally considered\u00a0decent and usable \u201cbudget\u201d stainless steels. 420 (specifically 420HC) is described as very tough with respectable edge retention. 440 (particularly 440C) can achieve\u00a0higher hardness (58 HRC or above)\u00a0and typically offers better edge retention, though it may not be as tough as 420. 440C is also a corrosion-resistant martensitic chromium steel with high wear resistance. The specific grade and heat treatment are important for comparing their actual performance.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567652987","position":20,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567652987","name":"Como a resist\u00eancia \u00e0 corros\u00e3o do a\u00e7o inoxid\u00e1vel 420 se compara \u00e0 do a\u00e7o inoxid\u00e1vel 316?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"While 420 stainless steel offers good corrosion resistance compared to other cutlery steels, its\u00a0corrosion resistance is inferior to 316 stainless steel. SAE 316 and 316L (often called \u201cmarine grade\u201d) are chromium, nickel, molybdenum alloys known for their superior strength and corrosion resistance, and are considered biocompatible when produced to specific standards.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567683448","position":21,"url":"https:\/\/aobosteel.com\/420-stainless-steel\/#faq-question-1755567683448","name":"O a\u00e7o inoxid\u00e1vel 420 \u00e9 bom?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"420 steel is indeed a good stainless steel, offering a satisfactory level of corrosion resistance for a wide range of applications, particularly when properly heat-treated. Its combination of corrosion resistance with achievable high hardness and wear resistance makes it a versatile material, notably for cutlery and certain tooling applications.\u00a0","inLanguage":"pt-BR"},"inLanguage":"pt-BR"}]}},"uagb_featured_image_src":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif",764,764,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel-300x300.avif",300,300,true],"medium_large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif",764,764,false],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif",764,764,false],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif",764,764,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif",764,764,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel-12x12.avif",12,12,true]},"uagb_author_info":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/pt\/blog\/author\/admin\/"},"uagb_comment_info":0,"uagb_excerpt":"420 stainless steel is a&nbsp;martensitic&nbsp;stainless steel, which is a type of iron-chromium alloy.&nbsp;It is part of the&nbsp;400-series&nbsp;stainless steel classifications.&nbsp;Unlike some other stainless steel types, AISI 420 stainless steel is&nbsp;magnetic. 1. Applications 2.\u00a0420 Stainless Steel Composition Element Carbon (C) Manganese (Mn) Silicon (Si) Phosphorus (P) Sulfur (S) Chromium (Cr) Compositional&nbsp; 0.15- 0.40% \u2264 1.00% \u2264 0.50%&hellip;","rttpg_featured_image_url":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif",764,764,false],"landscape":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif",764,764,false],"portraits":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif",764,764,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel-300x300.avif",300,300,true],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif",764,764,false],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif",764,764,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif",764,764,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel-12x12.avif",12,12,true]},"rttpg_author":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/pt\/blog\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"420 stainless steel is a&nbsp;martensitic&nbsp;stainless steel, which is a type of iron-chromium alloy.&nbsp;It is part of the&nbsp;400-series&nbsp;stainless steel classifications.&nbsp;Unlike some other stainless steel types, AISI 420 stainless steel is&nbsp;magnetic. 1. Applications 2.\u00a0420 Stainless Steel Composition Element Carbon (C) Manganese (Mn) Silicon (Si) Phosphorus (P) Sulfur (S) Chromium (Cr) Compositional&nbsp; 0.15- 0.40% \u2264 1.00% \u2264 0.50%&hellip;","_links":{"self":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/9313","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/comments?post=9313"}],"version-history":[{"count":0,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/9313\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/media\/9160"}],"wp:attachment":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/media?parent=9313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}