{"id":9293,"date":"2025-08-01T16:08:32","date_gmt":"2025-08-01T08:08:32","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=9293"},"modified":"2026-04-24T20:29:36","modified_gmt":"2026-04-24T12:29:36","slug":"440c-stainless-steel","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/440c-stainless-steel\/","title":{"rendered":"440C Stainless Steel (1.4125 \/ SUS440C) Supplier | Round Bar &amp; Plate Bulk Supply"},"content":{"rendered":"<div class=\"wp-block-cover alignfull\"><img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"632\" class=\"wp-block-cover__image-background wp-image-7233 size-full\" alt=\"\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3.webp\" data-object-fit=\"cover\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3.webp 1920w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3-300x99.webp 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3-1024x337.webp 1024w, 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\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><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<div class=\"wp-block-uagb-advanced-heading uagb-block-fa80bdcf\"><h1 class=\"uagb-heading-text\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">A\u00c7O INOXID\u00c1VEL 440C | 1.4125 | SUS440C<\/mark> Supplier for Bulk Orders<\/h1><p class=\"uagb-desc-text\">1.4125 \/ SUS440C Round Bar &amp; Plate | MOQ 5 Tons | Export Mill Length 2\u20135.5m<\/p><\/div>\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<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-c40b4c7b alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<p class=\"wp-block-paragraph\">440C stainless steel is a high-carbon, high-chromium martensitic stainless steel.&nbsp;It belongs to the 400 series of stainless steels, which are generally magnetic.&nbsp;In the medical field, 440C steel is widely used for manufacturing surgical knives and other medical instruments. It is also used in industry to manufacture corrosion-resistant plastic and rubber molds.&nbsp;<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-f640db95 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<h2 class=\"wp-block-heading\" id=\"h-440c-stainless-steel-supply-overview\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-3-color\">440C Stainless Steel Supply Overview<\/mark><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Grau<\/td><td>A\u00c7O INOXID\u00c1VEL 440C | 1.4125 | SUS440C<\/td><\/tr><tr><td>Condi\u00e7\u00f5es de entrega<\/td><td>Totalmente recozido (condi\u00e7\u00e3o macia para usinagem)<\/td><\/tr><tr><td>Formul\u00e1rios dispon\u00edveis<\/td><td>Barra redonda \/ Barra plana \/ Chapa \/ Bloco forjado<\/td><\/tr><tr><td>Capacidade de produ\u00e7\u00e3o mensal<\/td><td>Aproximadamente 1000 toneladas m\u00e9tricas<\/td><\/tr><tr><td>Quantidade recomendada para exporta\u00e7\u00e3o<\/td><td>Cont\u00eainer 20GP completo (aproximadamente 26 toneladas)<\/td><\/tr><tr><td>MOQ<\/td><td>5 toneladas<\/td><\/tr><tr><td>Prazo de entrega (com estoque de lingotes)<\/td><td>Aproximadamente 20 dias<\/td><\/tr><tr><td>Prazo de entrega (derretido)<\/td><td>30 a 45 dias<\/td><\/tr><tr><td>Prazo de entrega (n\u00edvel ESR)<\/td><td>Aproximadamente 60 dias<\/td><\/tr><tr><td>Inspe\u00e7\u00e3o<\/td><td>Equipe interna de ultrassom + Inspe\u00e7\u00e3o por terceiros dispon\u00edvel<\/td><\/tr><tr><td>Documenta\u00e7\u00e3o<\/td><td>MTC (EN 10204 3.1) + Relat\u00f3rio UT<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-why-global-distributors-source-440c-from-aobo-steel\">Why Global Distributors Source 440C from Aobo Steel<\/h2>\n\n\n\n<div class=\"wp-block-columns 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<ul class=\"wp-block-list\">\n<li>Fornecimento mensal cont\u00ednuo de cerca de 1000 toneladas<\/li>\n\n\n\n<li>Quantidade m\u00ednima de encomenda a partir de 5 toneladas para pedidos por atacado.<\/li>\n\n\n\n<li>Comprimentos de barras e pratos otimizados para cont\u00eaineres<\/li>\n\n\n\n<li>S\u00e3o permitidos carregamentos de tamanhos mistos para exporta\u00e7\u00e3o.<\/li>\n\n\n\n<li>Entrega de material recozido para usinagem subsequente.<\/li>\n\n\n\n<li>Fornecimento est\u00e1vel por meio de parceiros integrados na cadeia de suprimentos.<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<ul class=\"wp-block-list\">\n<li>Inspe\u00e7\u00e3o UT dispon\u00edvel para SEP 1921-82 D\/d ou E\/e<\/li>\n\n\n\n<li>Rastreabilidade MTC e de lote para cada remessa.<\/li>\n\n\n\n<li>Rastreamento do n\u00famero de lote para controle de pedidos<\/li>\n\n\n\n<li>Op\u00e7\u00f5es de superf\u00edcie preta, torneada e polida<\/li>\n\n\n\n<li>Embalagem a granel para exporta\u00e7\u00e3o mar\u00edtima.<\/li>\n\n\n\n<li>Caminho de convers\u00e3o claro para a p\u00e1gina dedicada ao fornecimento em massa.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-434c7447 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<div class=\"wp-block-uagb-container uagb-block-b8bc3b23\">\n<h2 class=\"wp-block-heading has-text-align-left has-large-font-size\" id=\"h-stable-production-for-long-term-bulk-supply\">Produ\u00e7\u00e3o est\u00e1vel para fornecimento em larga escala a longo prazo<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ciclos de produ\u00e7\u00e3o cont\u00ednuos para reposi\u00e7\u00e3o de estoque<\/li>\n\n\n\n<li>A tecnologia ESR (Refus\u00e3o por Eletroesc\u00f3ria) est\u00e1 dispon\u00edvel mediante solicita\u00e7\u00e3o.<\/li>\n\n\n\n<li>Fornecimento est\u00e1vel de ligas met\u00e1licas para reduzir o risco de interrup\u00e7\u00e3o no fornecimento<\/li>\n\n\n\n<li>Rastreabilidade completa do lote, vinculada ao n\u00famero de lote original.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-100 hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Solicite um or\u00e7amento para grandes volumes.<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-3dfb5298\">\n<figure class=\"wp-block-image aligncenter size-large has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20171115_153016-1024x576.avif\" alt=\"\" class=\"wp-image-12933\" style=\"border-top-left-radius:15px;border-top-right-radius:15px;border-bottom-left-radius:15px;border-bottom-right-radius:15px\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20171115_153016-1024x576.avif 1024w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20171115_153016-300x169.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20171115_153016-768x432.avif 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20171115_153016-1536x864.avif 1536w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20171115_153016-18x10.avif 18w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20171115_153016.avif 1860w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-122c03a6 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<h2 class=\"wp-block-heading\" id=\"h-available-440c-stainless-steel-forms\">Available 440C Stainless Steel Forms<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"206\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/03\/dd399cbb-cb1f-40f8-8398-03acefc1a0cd-1024x206.avif\" alt=\"\" class=\"wp-image-13355\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/03\/dd399cbb-cb1f-40f8-8398-03acefc1a0cd-1024x206.avif 1024w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/03\/dd399cbb-cb1f-40f8-8398-03acefc1a0cd-300x60.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/03\/dd399cbb-cb1f-40f8-8398-03acefc1a0cd-768x155.avif 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/03\/dd399cbb-cb1f-40f8-8398-03acefc1a0cd-18x4.avif 18w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/03\/dd399cbb-cb1f-40f8-8398-03acefc1a0cd.avif 1385w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-682a18af alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<div class=\"wp-block-uagb-container uagb-block-cba2949c\">\n<figure class=\"wp-block-image aligncenter size-full has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20221028_111745.avif\" alt=\"\" class=\"wp-image-13133\" style=\"border-top-left-radius:15px;border-top-right-radius:15px;border-bottom-left-radius:15px;border-bottom-right-radius:15px\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20221028_111745.avif 500w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20221028_111745-300x300.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20221028_111745-150x150.avif 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20221028_111745-12x12.avif 12w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-cf834837\">\n<h2 class=\"wp-block-heading has-large-font-size\" id=\"h-quality-control-for-bulk-orders\">Controle de Qualidade para Encomendas em Grande Quantidade<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cada lote de a\u00e7o ferramenta fornecido pela Aobo Steel \u00e9 verificado antes do envio para garantir a precis\u00e3o da classifica\u00e7\u00e3o, a integridade interna e a rastreabilidade de pedidos em grande quantidade.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Composi\u00e7\u00e3o qu\u00edmica verificada por espectr\u00f4metro<\/li>\n\n\n\n<li>Teste ultrass\u00f4nico dispon\u00edvel (SET 1921-82)<\/li>\n\n\n\n<li>Entregue em condi\u00e7\u00e3o esferoidizada e recozida<\/li>\n\n\n\n<li>Certificado de Ensaio de F\u00e1brica (EN 10204 3.1) com n\u00famero de lote<\/li>\n\n\n\n<li>Inspe\u00e7\u00e3o dimensional e de superf\u00edcie antes do envio.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-100 hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Get 440C Bulk Supply Quote<\/a><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-0226a4d4 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<div class=\"wp-block-uagb-container uagb-block-66b1055b\">\n<h2 class=\"wp-block-heading has-large-font-size\" id=\"h-export-packaging-and-container-loading\">Embalagem para exporta\u00e7\u00e3o e carregamento de cont\u00eaineres<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Embalagem profissional para exporta\u00e7\u00e3o mar\u00edtima<\/li>\n\n\n\n<li>Carregamento otimizado para cont\u00eaineres de 20 p\u00e9s (20GP) at\u00e9 aproximadamente 26 toneladas.<\/li>\n\n\n\n<li>Suporte para diferentes graus e tamanhos<\/li>\n\n\n\n<li>Prote\u00e7\u00e3o anticorrosiva para longos transportes mar\u00edtimos.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"h-\">Para remessas internacionais, recomenda-se fortemente o carregamento de cont\u00eaineres completos para garantir a efici\u00eancia de custos e um processamento alfandeg\u00e1rio mais \u00e1gil.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-100 hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Solicite um or\u00e7amento para carga completa de cont\u00eainer (FCL).<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-52d8f3b6\">\n<figure class=\"wp-block-image aligncenter size-full has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/photobank-2.avif\" alt=\"\" class=\"wp-image-12935\" style=\"border-top-left-radius:15px;border-top-right-radius:15px;border-bottom-left-radius:15px;border-bottom-right-radius:15px\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/photobank-2.avif 1000w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/photobank-2-300x225.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/photobank-2-768x576.avif 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/photobank-2-16x12.avif 16w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n<\/div>\n<\/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\" id=\"1-eael-table-of-content\">1. Aplica\u00e7\u00f5es<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ferramentas de corte<\/li>\n\n\n\n<li>Rolamentos&nbsp;<\/li>\n\n\n\n<li>Materiais de molde de pl\u00e1stico<\/li>\n\n\n\n<li>Pe\u00e7as de v\u00e1lvula<\/li>\n\n\n\n<li>Engrenagens, eixos, cames<\/li>\n\n\n\n<li>Instrumentos Cir\u00fargicos e Odontol\u00f3gicos<\/li>\n\n\n\n<li>Molas<\/li>\n\n\n\n<li>Aplica\u00e7\u00f5es M\u00e9dicas<\/li>\n\n\n\n<li>Aplica\u00e7\u00f5es resistentes ao desgaste<\/li>\n\n\n\n<li>Setor automotivo<\/li>\n\n\n\n<li>Hardware<\/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 440C<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Carbono (C)<\/td><td>Cromo (Cr)<\/td><td>Mangan\u00eas (Mn)<\/td><td>Sil\u00edcio (Si)<\/td><td>Molibd\u00eanio (Mo)<\/td><td>F\u00f3sforo (P)<\/td><td>Enxofre (S)<\/td><\/tr><tr><td>0,95 \u2013 1,20<\/td><td>16,0 \u2013 18,0<\/td><td>1,00 m\u00e1ximo<\/td><td>1,00 m\u00e1ximo<\/td><td>0,75 m\u00e1ximo<\/td><td>0,040 m\u00e1ximo<\/td><td>0,030 m\u00e1ximo<\/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 440C<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-1-mechanical-properties\">3.1 Propriedades Mec\u00e2nicas<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Condition\/Type<\/th><th>Tensile Strength (ksi\/MPa)<\/th><th>Yield Strength (0.2% Offset) (ksi\/MPa)<\/th><th>Elongation in 2&#8243; \/ 50mm (%)<\/th><\/tr><tr><td><strong>Recozido<\/strong><\/td><td>110 ksi (758 MPa) (Min 110 ksi \/ 758 MPa for bar)<\/td><td>65 ksi (448 MPa) (Min 65 ksi \/ 448 MPa for bar)<\/td><td>14% (Min 14% for bar)<\/td><\/tr><tr><td><strong>Heat Treated \/ Hardened<\/strong><\/td><td>285 ksi (1965 MPa)<\/td><td>275 ksi (1896 MPa)<\/td><td>2%<\/td><\/tr><tr><td><strong>Barra Acabada a Frio<\/strong><\/td><td>Minimum 125 ksi (862 MPa)<\/td><td>Minimum 100 ksi (689 MPa)<\/td><td>Minimum 7%<\/td><\/tr><tr><td><strong>Arame Recozido<\/strong><\/td><td>Minimum 140 ksi (965 MPa)<\/td><td>\u2013<\/td><td>Minimum 13%<\/td><\/tr><tr><td><strong>Arame de encabe\u00e7amento a frio<\/strong><\/td><td>Typical 110 ksi (760 MPa)<\/td><td>\u2013<\/td><td>\u2013<\/td><\/tr><tr><td><strong>Fio levemente esbo\u00e7ado<\/strong><\/td><td>Typical 120 ksi (830 MPa)<\/td><td>\u2013<\/td><td>\u2013<\/td><\/tr><tr><td><strong>MIM (Metal Injection Molded) 440C<\/strong><\/td><td>876 MPa (after heat treatment)<\/td><td>\u2013<\/td><td>\u2013<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-2-physical-amp-thermal-properties\">3.2 Physical &amp; Thermal Properties<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Propriedade<\/th><th>Valor<\/th><\/tr><tr><td><strong>Toughness (Heat Treated)<\/strong><\/td><td>5 ft-lb<\/td><\/tr><tr><td><strong>M\u00f3dulo de elasticidade<\/strong><\/td><td>29 x 10^6 psi (Approx. 200 GPa)<\/td><\/tr><tr><td><strong>Specific Heat (32-212\u00b0F)<\/strong><\/td><td>0.11 Btu\/lb\u00b7\u00b0F<\/td><\/tr><tr><td><strong>Densidade<\/strong><\/td><td>Approx. 0.29 lb\/in^3 (8.02 g\/cm^3)<\/td><\/tr><tr><td><strong>Thermal Conductivity (20\u00b0C)<\/strong><\/td><td>29,3 W\/(m\u00b7K)<\/td><\/tr><tr><td><strong>Coefficient of Linear Thermal Expansion<\/strong><\/td><td>Approx. 10.5 x 10^-6 K^-1 (Over ranges: 20-100\u00b0C, 20-200\u00b0C, 20-300\u00b0C, 20-500\u00b0C)<\/td><\/tr><\/tbody><\/table><\/figure>\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 alignfull size-full has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"1862\" height=\"1862\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/440C.avif\" alt=\"\" class=\"wp-image-14785\" style=\"border-top-left-radius:15px;border-top-right-radius:15px;border-bottom-left-radius:15px;border-bottom-right-radius:15px\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/440C.avif 1862w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/440C-300x300.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/440C-1024x1024.avif 1024w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/440C-150x150.avif 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/440C-768x768.avif 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/440C-1536x1536.avif 1536w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/440C-12x12.avif 12w\" sizes=\"auto, (max-width: 1862px) 100vw, 1862px\" \/><figcaption class=\"wp-element-caption\">A\u00e7o inoxid\u00e1vel 440C<\/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=\"has-ast-global-color-0-color has-text-color has-link-color wp-elements-aa20d97342030218fbf4f1a9ade78b62 wp-block-paragraph\"><strong>Interessado em a\u00e7o inoxid\u00e1vel 440C?<\/strong> <strong>Preencha o formul\u00e1rio abaixo para entrar em contato conosco hoje mesmo!<\/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-1779915196000-2308698959\",\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-1779915196000-2308698959\"><\/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\">O tratamento t\u00e9rmico do a\u00e7o inoxid\u00e1vel 440C, como outros a\u00e7os inoxid\u00e1veis martens\u00edticos, normalmente envolve austenitiza\u00e7\u00e3o,&nbsp;<em>t\u00eampera<\/em>e revenimento. O processo visa transformar o a\u00e7o em uma microestrutura martens\u00edtica, que \u00e9 ent\u00e3o revenida para otimizar seu equil\u00edbrio entre dureza, resist\u00eancia, ductilidade e resist\u00eancia \u00e0 corros\u00e3o.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"5-eael-table-of-content\">4.1 Austenitiza\u00e7\u00e3o (endurecimento)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The austenitizing temperature is&nbsp;925 to 1065 \u00b0C (1700 to 1950 \u00b0F). We recommend 1038\u00b0C (1900\u00b0F)&nbsp;because we believe it provides the best hardness and corrosion resistance. Additionally, we suggest preheating the material to&nbsp;650\u00b0C (1200\u00b0F)&nbsp;before this step to minimize distortion, warping, or cracking from high thermal gradients during rapid heating or quenching. Soaking time&nbsp;should be sufficient to ensure carbides dissolve into the&nbsp;austenite, which can be slower than in plain carbon steels due to the presence of chromium.<\/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\">Following austenitizing, 440C steel is typically quenched in&nbsp;air or oil.&nbsp;Oil quenching at temperatures such as 1038\u00b0C (1900\u00b0F) or 1040\u00b0C (1900\u00b0F) is a common choice.&nbsp;After quenching, the steel transforms into martensite, a hard yet brittle structure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"7-eael-table-of-content\">4.3 Revenimento<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A etapa seguinte \u00e0 t\u00eampera \u00e9 o revenimento, que visa reduzir a dureza, aumentar a tenacidade e a ductilidade e aliviar o estresse interno.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A temperatura de t\u00eampera \u00e9&nbsp;<strong>392\u00b0F a 662\u00b0F (200\u00b0C a 350\u00b0C)<\/strong>. Diferentes temperaturas de revenimento resultam em diferentes n\u00edveis de dureza, como segue:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Temperatura (\u00b0C)<\/td><td>Temperatura (\u00b0F)<\/td><td>Dureza (HRC)<\/td><\/tr><tr><td>150<\/td><td>300<\/td><td>60<\/td><\/tr><tr><td>315<\/td><td>600<\/td><td>57<\/td><\/tr><tr><td>425<\/td><td>800<\/td><td>58<\/td><\/tr><tr><td>480<\/td><td>900<\/td><td>57<\/td><\/tr><tr><td>540<\/td><td>1000<\/td><td>55<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">It should be noted that tempering 440C stainless steel and similar high-carbon martensitic stainless steels in the range of&nbsp;427 \u00b0C to 566 \u00b0C (800 \u00b0F to 1050 \u00b0F)&nbsp;will result in temper brittleness and reduced impact strength and corrosion resistance.<br>If tempering outside the aforementioned temperature range is necessary to enhance toughness, we recommend a tempering temperature of&nbsp;593\u00b0C (1100\u00b0F)&nbsp;or higher. Tempering at this temperature improves impact strength and corrosion resistance but sacrifices some hardness.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"8-eael-table-of-content\">4.4 Considera\u00e7\u00f5es especiais no tratamento t\u00e9rmico do a\u00e7o 440C<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pr\u00e9-aquecimento:<\/strong>&nbsp;Before the main hardening(austenitizing) process, we suggest preheating 440C stainless steel to approximately&nbsp;650\u00b0C (1200\u00b0F). This helps to ensure a more uniform temperature distribution and minimize thermal shock during the subsequent austenitizing stage.<\/li>\n\n\n\n<li><strong>Resfriamento lento ap\u00f3s forjamento:<\/strong>&nbsp;Para a\u00e7os de alto carbono, como o 440C, recomendamos o resfriamento lento ap\u00f3s o forjamento, ou resfriamento intermitente, que envolve o resfriamento a 150-250 \u00b0C, reaquecimento a aproximadamente 650 \u00b0C e, em seguida, o resfriamento final. Isso ajuda a prevenir trincas e a forma\u00e7\u00e3o de carbonetos nos contornos de gr\u00e3o.<\/li>\n\n\n\n<li><strong>Gerenciando Austenita Retida:<\/strong>&nbsp;O a\u00e7o 440C temperado pode, \u00e0s vezes, conter uma quantidade significativa de austenita retida (potencialmente 20-30% por volume). Se n\u00e3o for tratada, essa austenita retida pode se transformar espontaneamente ao longo do tempo, levando a altera\u00e7\u00f5es dimensionais e a um risco aumentado de trincas. A realiza\u00e7\u00e3o de um tratamento a frio abaixo de zero ap\u00f3s a t\u00eampera pode efetivamente transformar essa austenita retida em martensita n\u00e3o revenida. Esse tratamento a frio deve ser seguido por pelo menos um ciclo de revenimento padr\u00e3o para revenir a martensita rec\u00e9m-formada e aliviar as tens\u00f5es internas.<\/li>\n\n\n\n<li><strong>Tratamento T\u00e9rmico P\u00f3s-Soldagem (PWHT):<\/strong>&nbsp;For welded 440C components, PWHT is almost always necessary. This treatment serves to temper the martensite formed in the weld and heat-affected zone and to relieve residual stresses.&nbsp;The PWHT temperature range for 440C is&nbsp;480\u00b0C to 750\u00b0C (895\u00b0F to 1380\u00b0F).<\/li>\n<\/ul>\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>DIN EN (Europa):<\/strong>&nbsp;1,4125 (X105CrMo17)<\/li>\n\n\n\n<li><strong>JIS (Jap\u00e3o):<\/strong>&nbsp;SUS440C<\/li>\n\n\n\n<li><strong>ISO:<\/strong>&nbsp;X105CrMo17<\/li>\n\n\n\n<li><strong>GB (China):<\/strong>&nbsp;<em>9Cr18Mo<\/em>&nbsp;ou&nbsp;<em>95Cr18<\/em><\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-100 hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Request 440C Bulk Quote<\/a><\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>440C stainless steel is a high-carbon, high-chromium martensitic stainless steel.&nbsp;It belongs to the 400 series of stainless steels, which are generally magnetic.&nbsp;In the medical field, 440C steel is widely used for manufacturing surgical knives and other medical instruments. It is also used in industry to manufacture corrosion-resistant plastic and rubber molds.&nbsp; 440C Stainless Steel Supply [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":14803,"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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":"[]"},"class_list":["post-9293","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6.1 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>440C Stainless Steel (1.4125 \/ SUS440C) Supplier | Round Bar &amp; Plate Bulk Supply<\/title>\n<meta name=\"description\" content=\"Supply 440C stainless steel (1.4125 \/ SUS440C) in round bar and plate. 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