{"id":12240,"date":"2026-01-14T13:32:41","date_gmt":"2026-01-14T05:32:41","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=12240"},"modified":"2026-04-26T00:21:21","modified_gmt":"2026-04-25T16:21:21","slug":"s1-tool-steel-heat-treatment-guide","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/s1-tool-steel-heat-treatment-guide\/","title":{"rendered":"Guia de Tratamento T\u00e9rmico do A\u00e7o Ferramenta S1"},"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<div class=\"wp-block-uagb-container uagb-block-29fc5c3c alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<div class=\"wp-block-uagb-advanced-heading uagb-block-33e61970\"><h6 class=\"uagb-heading-text\"><a href=\"https:\/\/aobosteel.com\/pt\/\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">In\u00edcio<\/mark>     <\/a>&gt; <a href=\"https:\/\/aobosteel.com\/pt\/tool-steel-heat-treatment-guide\/\">    <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">Centro T\u00e9cnico de Tratamento T\u00e9rmico de A\u00e7os para Ferramentas<\/mark>    <\/a> Guia de Tratamento T\u00e9rmico do A\u00e7o Ferramenta S1<\/h6><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-8276fe18\"><h4 class=\"uagb-heading-text\"><em>Aobo Steel | Fornecedor global de a\u00e7o para ferramentas na China<\/em><\/h4><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-c04ecb9d\"><h1 class=\"uagb-heading-text\">Guia de Tratamento T\u00e9rmico do A\u00e7o Ferramenta S1<\/h1><p class=\"uagb-desc-text\">Guia de tratamento t\u00e9rmico para a\u00e7o ferramenta S1 (1.2550 | SKS41), com foco em alta tenacidade, resist\u00eancia a impactos e desempenho confi\u00e1vel em aplica\u00e7\u00f5es de ferramentas para trabalho a frio.<\/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\">Solicite uma consulta r\u00e1pida<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/aobosteel.com\/pt\/s1-tool-steel\/\">Especifica\u00e7\u00f5es do material S1<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-2175002f alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/aobosteel.com\/pt\/s1-tool-steel\/\">A\u00e7o para ferramentas S1<\/a> \u00c9 um a\u00e7o liga de tungst\u00eanio-cromo-van\u00e1dio resistente a choques, projetado para aplica\u00e7\u00f5es que exigem alta tenacidade e resist\u00eancia a impactos prolongados. \u00c9 amplamente utilizado em ferramentas pneum\u00e1ticas, cinz\u00e9is, pun\u00e7\u00f5es, l\u00e2minas de corte e matrizes de conforma\u00e7\u00e3o. O a\u00e7o cont\u00e9m aproximadamente 0,50% de carbono, 2,50% de tungst\u00eanio e 1,50% de cromo. Oferece uma combina\u00e7\u00e3o equilibrada de resist\u00eancia, resist\u00eancia ao desgaste e temperabilidade, com resist\u00eancia moderada ao amolecimento em altas temperaturas. Sua maior vantagem reside na excepcional resist\u00eancia transversal e na not\u00e1vel resist\u00eancia ao lascamento sob cargas de impacto.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Na Aobo Steel, fornecemos a\u00e7o S1 temperado. Os processos de tratamento t\u00e9rmico para o a\u00e7o ferramenta S1 de nossos clientes incluem al\u00edvio de tens\u00f5es e endurecimento. O processo de endurecimento compreende quatro etapas: pr\u00e9-aquecimento, austenitiza\u00e7\u00e3o, t\u00eampera e revenido. Este artigo se concentra principalmente nessas etapas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-a-quick-checklist-for-s1-tool-steel-heat-treatment\">Lista de verifica\u00e7\u00e3o r\u00e1pida para tratamento t\u00e9rmico do a\u00e7o ferramenta S1<\/h2>\n\n\n\n<div class=\"schema-how-to wp-block-yoast-how-to-block\"><p class=\"schema-how-to-total-time\"><span class=\"schema-how-to-duration-time-text\">Tempo necess\u00e1rio:&nbsp;<\/span>2 horas<\/p><p class=\"schema-how-to-description\">Siga estas instru\u00e7\u00f5es passo a passo para realizar o tratamento t\u00e9rmico adequado do a\u00e7o ferramenta S1, garantindo o cumprimento das faixas de temperatura e par\u00e2metros de processamento espec\u00edficos para obter resultados ideais.<\/p> <ol class=\"schema-how-to-steps\"><li class=\"schema-how-to-step\" id=\"how-to-step-1768366922377\"><strong class=\"schema-how-to-step-name\">Pr\u00e9-aquecimento<\/strong> <p class=\"schema-how-to-step-text\">Aumente lentamente a temperatura do forno para aproximadamente 650 \u00b0C (1200 \u00b0F). Mantenha essa temperatura at\u00e9 que a se\u00e7\u00e3o transversal da pe\u00e7a esteja aquecida uniformemente.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1768367014883\"><strong class=\"schema-how-to-step-name\"><strong>Austenitiz<\/strong>indo<\/strong> <p class=\"schema-how-to-step-text\">Aque\u00e7a a pe\u00e7a de trabalho a uma temperatura entre 900 \u00b0C e 955 \u00b0C (1650 \u00b0F e 1750 \u00b0F) usando uma atmosfera neutra controlada, ambiente de v\u00e1cuo ou banho de sal neutro. Mantenha essa temperatura por 15 a 45 minutos, dependendo da espessura da se\u00e7\u00e3o transversal, para garantir o endurecimento completo.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1768367030990\"><strong class=\"schema-how-to-step-name\"><strong>Extin\u00e7\u00e3o<\/strong>indo<\/strong> <p class=\"schema-how-to-step-text\">Mergulhe o a\u00e7o em \u00f3leo de t\u00eampera pr\u00e9-aquecido e em circula\u00e7\u00e3o\u00b3. Continue a t\u00eampera at\u00e9 que a temperatura da pe\u00e7a caia para 50\u00b0C-70\u00b0C (120\u00b0F-160\u00b0F), ponto em que o a\u00e7o deve estar morno ao toque.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1768367047568\"><strong class=\"schema-how-to-step-name\"><strong>Temperamento<\/strong>indo<\/strong> <p class=\"schema-how-to-step-text\">Transfira a pe\u00e7a para o forno de revenimento imediatamente enquanto ainda estiver morna (50 \u00b0C a 70 \u00b0C); n\u00e3o deixe que esfrie at\u00e9 a temperatura ambiente. Mantenha a pe\u00e7a no forno por no m\u00ednimo 2 horas para cada 25 mm (1 polegada) de espessura, deixe esfriar at\u00e9 a temperatura ambiente e realize um segundo ciclo de revenimento.<\/p> <\/li><\/ol><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Tratamento para al\u00edvio do estresse<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O tratamento de al\u00edvio de tens\u00f5es serve como etapa preparat\u00f3ria para componentes S1 ap\u00f3s usinagem de desbaste ou trabalho a frio, visando minimizar os riscos de deforma\u00e7\u00e3o e trincas durante os processos subsequentes de t\u00eampera. As tens\u00f5es internas geradas pela usinagem, se n\u00e3o eliminadas antes do tratamento t\u00e9rmico, podem causar distor\u00e7\u00e3o microestrutural severa ou distor\u00e7\u00e3o dimensional descontrolada quando aquecidas a altas temperaturas de t\u00eampera.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Procedimento do processo:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Temperatura de aquecimento: Aque\u00e7a a pe\u00e7a de trabalho uniformemente a uma temperatura entre 650\u00b0C e 675\u00b0C (1200\u00b0F e 1250\u00b0F).<\/li>\n\n\n\n<li>Tempo de imers\u00e3o: Calcular com base na espessura da se\u00e7\u00e3o transversal: 1 hora por 25 mm (1 polegada), com um tempo m\u00ednimo de imers\u00e3o de 1 hora.<\/li>\n\n\n\n<li>M\u00e9todo de resfriamento: Resfriamento lento por ar (resfriamento por ar).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Pr\u00e9-aquecimento<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Para evitar choque t\u00e9rmico e deforma\u00e7\u00e3o excessiva, \u00e9 estritamente proibido colocar pe\u00e7as frias de a\u00e7o inoxid\u00e1vel S1 diretamente em um forno na temperatura de austenitiza\u00e7\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Procedimento do processo:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Temperatura de aquecimento: Aumente lentamente a temperatura para aproximadamente 650\u00b0C (1200\u00b0F).<\/li>\n\n\n\n<li>Requisito de perman\u00eancia: Manter nesta temperatura at\u00e9 que a se\u00e7\u00e3o transversal da pe\u00e7a esteja uniformemente aquecida.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Para pe\u00e7as S1 com geometrias complexas ou varia\u00e7\u00f5es significativas na se\u00e7\u00e3o transversal, o pr\u00e9-aquecimento \u00e9 crucial para garantir um aumento sincronizado da temperatura entre o n\u00facleo e a superf\u00edcie durante a etapa final de aquecimento. Isso reduz a tens\u00e3o t\u00e9rmica e evita fissuras.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Austenitiza\u00e7\u00e3o (endurecimento)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Austenitizing is the core hardening process, transforming the steel microstructure into\u00a0austenite\u00a0by heating and promoting carbide dissolution into the matrix. The austenitizing heating temperature for S1 tool steel must be neither too high nor too low.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Procedimento do processo:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Temperatura de aquecimento: 900\u00b0C a 955\u00b0C (1650\u00b0F a 1750\u00b0F).<\/li>\n\n\n\n<li>Tempo de espera: Manter de 15 a 45 minutos. A dura\u00e7\u00e3o exata depende da espessura da se\u00e7\u00e3o transversal da pe\u00e7a para garantir o endurecimento completo de toda a se\u00e7\u00e3o.<\/li>\n\n\n\n<li>Controle da atmosfera: Devido \u00e0 resist\u00eancia moderada \u00e0 descarboneta\u00e7\u00e3o do S1, o aquecimento deve ocorrer em uma atmosfera neutra controlada, ambiente de v\u00e1cuo ou banho de sal neutro para evitar a oxida\u00e7\u00e3o superficial e a descarboneta\u00e7\u00e3o.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Resfriamento<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">S1 is oil-hardening steel. Although water quenching is occasionally used for large sections or simple shapes, we strongly recommend oil quenching to achieve optimal toughness and minimize the risk of cracking.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Procedimento do processo:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Meio de t\u00eampera: Utilize \u00f3leo de t\u00eampera pr\u00e9-aquecido e em circula\u00e7\u00e3o.<\/li>\n\n\n\n<li>Procedimento operacional: Mergulhe a pe\u00e7a em \u00f3leo at\u00e9 que sua temperatura caia para 50\u00b0C a 70\u00b0C (120\u00b0F a 160\u00b0F). Nesse ponto, a pe\u00e7a S1 deve estar morna ao toque.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c9 ESTRITAMENTE PROIBIDO: Deixar a pe\u00e7a esfriar at\u00e9 a temperatura ambiente ap\u00f3s a t\u00eampera antes do revenimento. Tens\u00f5es microestruturais significativas est\u00e3o presentes na microestrutura temperada. A n\u00e3o realiza\u00e7\u00e3o do revenimento imediato torna a pe\u00e7a S1 altamente suscet\u00edvel \u00e0 fratura fr\u00e1gil espont\u00e2nea.<\/p>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-bb5f1ed6\">\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"933\" height=\"1024\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/01\/S1-tool-steel-Isothermal-Transformation-Diagram-933x1024.avif\" alt=\"Diagrama de transforma\u00e7\u00e3o isot\u00e9rmica do a\u00e7o ferramenta S1\" class=\"wp-image-12242\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/01\/S1-tool-steel-Isothermal-Transformation-Diagram-933x1024.avif 933w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/01\/S1-tool-steel-Isothermal-Transformation-Diagram-273x300.avif 273w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/01\/S1-tool-steel-Isothermal-Transformation-Diagram-768x842.avif 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/01\/S1-tool-steel-Isothermal-Transformation-Diagram-11x12.avif 11w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/01\/S1-tool-steel-Isothermal-Transformation-Diagram.avif 1000w\" sizes=\"auto, (max-width: 933px) 100vw, 933px\" \/><figcaption class=\"wp-element-caption\">Diagrama de transforma\u00e7\u00e3o isot\u00e9rmica do a\u00e7o ferramenta S1. C: 0,50%, Mn: 0,25, Si: 0,75, Cr: 1,25, V: 0,20, W: 2,50. Austenitizado a 925 \u00b0C (1695 \u00b0F). Fonte: Uddeholm<\/figcaption><\/figure>\n\n\n\n<script type=\"application\/ld+json\">{\n    \"@context\": \"https:\\\/\\\/schema.org\\\/\",\n    \"@type\": \"ImageObject\",\n    \"contentUrl\": \"https:\\\/\\\/aobosteel.com\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/S1-tool-steel-Isothermal-Transformation-Diagram.avif\",\n    \"license\": \"https:\\\/\\\/aobosteel.com\\\/\",\n    \"acquireLicensePage\": \"https:\\\/\\\/aobosteel.com\\\/contact-us\\\/\",\n    \"creditText\": \"Aobo Steel - specialist in forged S1 tool steel\",\n    \"creator\": {\n        \"@type\": \"Organization\",\n        \"name\": \"Aobo Steel\",\n        \"url\": \"https:\\\/\\\/aobosteel.com\\\/\"\n    },\n    \"copyrightNotice\": \"Huangshi Aobo Mold Material Co., Ltd.\",\n    \"description\": \"Professional S1 tool steel Isothermal Transformation Diagram (TTT curve). Technical data provided by Aobo Steel to help customers optimize the quenching and tempering process for shock-resisting steel.\",\n    \"name\": \"S1 Tool Steel Isothermal Transformation (TTT) Diagram\",\n    \"caption\": \"S1 tool steel heat treatment technical data provided by Aobo Steel.\"\n}<\/script>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">T\u00eampera<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tempering should be performed immediately after quenching to enhance the toughness and ductility of S1 material. At the microstructural level, the quenched microstructure is transformed into tempered martensite. The tempering temperature can be adjusted according to the required S1 hardness.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Procedimento do processo:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tempo de imers\u00e3o: Calculado com base na espessura da se\u00e7\u00e3o, \u00e9 necess\u00e1rio um tempo m\u00ednimo de imers\u00e3o de 2 horas para cada 25 mm (1 polegada).<\/li>\n\n\n\n<li>Secondary Tempering: We strongly recommend secondary tempering to effectively eliminate unstable retained austenite, thereby optimizing yield strength and impact properties, and addressing deformation or cracking issues that may occur during subsequent use of S1.<\/li>\n\n\n\n<li>Requisitos de resfriamento: Entre o revenimento prim\u00e1rio e o secund\u00e1rio, a pe\u00e7a deve ser resfriada at\u00e9 a temperatura ambiente.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A tabela a seguir fornece valores aproximados de dureza para o a\u00e7o ferramenta S1 ap\u00f3s t\u00eampera em \u00f3leo a 900\u2013955\u00b0C (1650\u20131750\u00b0F).<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">Temperatura de t\u00eampera<\/td><td class=\"has-text-align-center\" data-align=\"center\">Dureza Aproximada (HRC)<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Como temperado<\/td><td class=\"has-text-align-center\" data-align=\"center\">57 \u2013 59<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">150\u00b0C (300\u00b0F)<\/td><td class=\"has-text-align-center\" data-align=\"center\">56 \u2013 58<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">205\u00b0C (400\u00b0F)<\/td><td class=\"has-text-align-center\" data-align=\"center\">55 \u2013 57<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">260\u00b0C (500\u00b0F)<\/td><td class=\"has-text-align-center\" data-align=\"center\">54 \u2013 56<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">315\u00b0C (600\u00b0F)<\/td><td class=\"has-text-align-center\" data-align=\"center\">52 \u2013 55<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">370\u00b0C (700\u00b0F)<\/td><td class=\"has-text-align-center\" data-align=\"center\">50 \u2013 53<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">425\u00b0C (800\u00b0F)<\/td><td class=\"has-text-align-center\" data-align=\"center\">48 \u2013 50<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">540\u00b0C (1000\u00b0F)<\/td><td class=\"has-text-align-center\" data-align=\"center\">40 \u2013 45<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Para aplica\u00e7\u00f5es que exigem m\u00e1xima resist\u00eancia, como cinz\u00e9is e pun\u00e7\u00f5es de alta resist\u00eancia, o revenimento \u00e9 normalmente realizado entre 204 \u00b0C e 316 \u00b0C. Para aplica\u00e7\u00f5es de trabalho a quente, temperaturas de revenimento mais elevadas podem ser necess\u00e1rias, mas a dureza diminuir\u00e1 significativamente.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Problemas comuns e solu\u00e7\u00f5es no tratamento t\u00e9rmico S1<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-1-quenching-cracks-nbsp\">1. Resfriamento r\u00e1pido de rachaduras.&nbsp;<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Este defeito surge principalmente de duas causas: primeiro, revenimento tardio \u2014 falha em revenir prontamente ap\u00f3s a t\u00eampera, resultando em exposi\u00e7\u00e3o prolongada \u00e0 temperatura ambiente e gerando tens\u00f5es que excedem a resist\u00eancia do material; segundo, pontos de concentra\u00e7\u00e3o de tens\u00e3o em pe\u00e7as S1, como cantos vivos, marcas de estampagem ou usinagem grosseira. Para solucionar esses problemas, o revenimento imediato deve ser implementado \u2014 transferindo a pe\u00e7a para o forno de revenimento enquanto ela ainda ret\u00e9m calor residual (aproximadamente 50\u201370 \u00b0C). Simultaneamente, durante as etapas de projeto e usinagem, cantos arredondados devem ser empregados em jun\u00e7\u00f5es cr\u00edticas e as superf\u00edcies devem ser mantidas com um alto acabamento superficial.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-2-low-hardness-nbsp\">2. Baixa dureza.&nbsp;<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">As principais causas desse defeito incluem: perda de carbono na superf\u00edcie (descarboneta\u00e7\u00e3o) devido a uma atmosfera inadequada durante a austenitiza\u00e7\u00e3o; temperatura de aquecimento ou tempo de perman\u00eancia insuficientes durante a austenitiza\u00e7\u00e3o; e t\u00eampera inadequada causada por temperatura do \u00f3leo excessivamente alta ou agita\u00e7\u00e3o insuficiente durante a t\u00eampera.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-deformation-nbsp\">3. Deforma\u00e7\u00e3o.&nbsp;<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A deforma\u00e7\u00e3o geralmente resulta de choque t\u00e9rmico causado por expans\u00e3o desigual devido a taxas de aquecimento excessivas ou por tens\u00f5es residuais geradas durante o desbaste que s\u00e3o liberadas durante o aquecimento. Medidas preventivas incluem: pr\u00e9-aquecimento a 650 \u00b0C antes da t\u00eampera; realiza\u00e7\u00e3o de tratamento de al\u00edvio de tens\u00f5es em pe\u00e7as desbastadas antes do resfriamento r\u00e1pido; e fornecimento de suporte f\u00edsico para pe\u00e7as longas ou complexas para evitar deforma\u00e7\u00f5es.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-4-soft-layer-decarbonization-nbsp\">4. Camada macia (descarboniza\u00e7\u00e3o).&nbsp;<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"h-\">Esse defeito ocorre quando o oxig\u00eanio ou a umidade no forno reagem com o carbono da superf\u00edcie, produzindo di\u00f3xido de carbono ou mon\u00f3xido de carbono, gases que escapam, reduzindo assim o teor de carbono. \u00c9 poss\u00edvel testar isso com uma lima. Se ela riscar facilmente a superf\u00edcie, indica a presen\u00e7a de uma camada fr\u00e1gil. Para evitar esse problema, podem ser tomadas as seguintes medidas: usar fornos a v\u00e1cuo ou fornos com atmosfera protetora preenchidos com gases inertes (como nitrog\u00eanio ou arg\u00f4nio) para isolar o oxig\u00eanio; ao usar um forno de banho de sal para aquecimento, a salmoura deve ser calibrada periodicamente para garantir que permane\u00e7a neutra e n\u00e3o reaja com o carbono; antes do tratamento t\u00e9rmico S1, deixar uma toler\u00e2ncia suficiente para garantir que essa camada descarbonetada possa ser completamente removida por meio de retifica\u00e7\u00e3o de precis\u00e3o ap\u00f3s o tratamento t\u00e9rmico.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faq\">Perguntas frequentes<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1768368514600\"><strong class=\"schema-faq-question\">Qual \u00e9 a temperatura de endurecimento do a\u00e7o ferramenta S1?<\/strong> <p class=\"schema-faq-answer\">A temperatura de aquecimento para austenitiza\u00e7\u00e3o deve estar entre 900 \u00b0C e 955 \u00b0C (1650 \u00b0F e 1750 \u00b0F). Mantenha essa temperatura por 15 a 45 minutos, dependendo da espessura da pe\u00e7a, para garantir o endurecimento completo.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768368531226\"><strong class=\"schema-faq-question\">Como realizar o al\u00edvio de tens\u00f5es em a\u00e7o ferramenta S1?<\/strong> <p class=\"schema-faq-answer\">Aque\u00e7a a pe\u00e7a uniformemente a 650 \u00b0C\u2013675 \u00b0C (1200 \u00b0F\u20131250 \u00b0F). Deixe atingir essa temperatura por 1 hora para cada 25 mm (1 polegada) de espessura (m\u00ednimo de 1 hora) e, em seguida, resfrie lentamente ao ar.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768368533255\"><strong class=\"schema-faq-question\">Qual \u00e9 o m\u00e9todo de t\u00eampera recomendado para o a\u00e7o S1?<\/strong> <p class=\"schema-faq-answer\">O resfriamento em \u00f3leo \u00e9 fortemente recomendado para garantir a tenacidade ideal e minimizar o risco de trincas. Realize o resfriamento em \u00f3leo pr\u00e9-aquecido e em circula\u00e7\u00e3o at\u00e9 que a temperatura da pe\u00e7a caia para 50\u00b0C\u201370\u00b0C (120\u00b0F\u2013160\u00b0F).<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768368534070\"><strong class=\"schema-faq-question\">Como prevenir fissuras de t\u00eampera no a\u00e7o S1?<\/strong> <p class=\"schema-faq-answer\">Ap\u00f3s a t\u00eampera, fa\u00e7a o revenimento da pe\u00e7a imediatamente, enquanto ela ainda estiver morna (50 \u00b0C a 70 \u00b0C); n\u00e3o a deixe esfriar at\u00e9 a temperatura ambiente. Al\u00e9m disso, certifique-se de que os projetos utilizem cantos arredondados em vez de pontos de tens\u00e3o agudos.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768368534896\"><strong class=\"schema-faq-question\">Qual \u00e9 o processo de revenimento do a\u00e7o ferramenta S1?<\/strong> <p class=\"schema-faq-answer\">Revenimento imediato ap\u00f3s a t\u00eampera, com um tempo m\u00ednimo de perman\u00eancia de 2 horas por cada 25 mm (1 polegada) de espessura. Recomenda-se vivamente um revenimento secund\u00e1rio para obter a resist\u00eancia ao escoamento e a resist\u00eancia ao impacto ideais.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768368535752\"><strong class=\"schema-faq-question\">Qual a dureza que o a\u00e7o ferramenta S1 pode atingir?<\/strong> <p class=\"schema-faq-answer\">Ap\u00f3s t\u00eampera em \u00f3leo, o a\u00e7o S1 normalmente atinge uma dureza de 57\u201359 HRC ap\u00f3s a t\u00eampera. O revenido a temperaturas entre 205\u00b0C (400\u00b0F) e 315\u00b0C (600\u00b0F) resulta em uma faixa de dureza de 52\u201357 HRC.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768368604242\"><strong class=\"schema-faq-question\">Por que o pr\u00e9-aquecimento \u00e9 necess\u00e1rio para o a\u00e7o S1?<\/strong> <p class=\"schema-faq-answer\">O pr\u00e9-aquecimento a 650 \u00b0C (1200 \u00b0F) previne o choque t\u00e9rmico e a deforma\u00e7\u00e3o excessiva. Ele garante o aquecimento simult\u00e2neo do n\u00facleo e da superf\u00edcie durante a etapa final, reduzindo a tens\u00e3o t\u00e9rmica e o risco de fissuras em geometrias complexas.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768368605375\"><strong class=\"schema-faq-question\">Como evitar camadas moles ou descarboneta\u00e7\u00e3o no a\u00e7o S1?<\/strong> <p class=\"schema-faq-answer\">Aque\u00e7a o a\u00e7o em um forno a v\u00e1cuo, banho de sal neutro ou atmosfera neutra controlada para evitar a oxida\u00e7\u00e3o superficial. Caso ocorra descarboneta\u00e7\u00e3o, deixe uma toler\u00e2ncia suficiente para remover a camada afetada por esmerilhamento ap\u00f3s o tratamento t\u00e9rmico.<\/p> <\/div> <\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>S1 tool steel is a shock-resistant tungsten-chromium-vanadium alloy steel designed for applications demanding high toughness and sustained impact stress. It is widely used in pneumatic tools, chisels, punches, shear blades, and forming dies. The steel contains approximately 0.50% carbon, 2.50% tungsten, and 1.50% chromium. It offers a balanced combination of strength, wear resistance, and hardenability, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"knowledge-article","_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":"","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-12240","page","type-page","status-publish","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>S1 Tool Steel Heat Treatment\u00a0Guide - AoboSteel<\/title>\n<meta name=\"description\" content=\"Master the S1 tool steel heat treatment process. 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Hold this temperature for 15 to 45 minutes, depending on the workpiece thickness, to ensure complete through-hardening.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/s1-tool-steel-heat-treatment-guide\\\/#faq-question-1768368531226\",\"position\":2,\"url\":\"https:\\\/\\\/aobosteel.com\\\/s1-tool-steel-heat-treatment-guide\\\/#faq-question-1768368531226\",\"name\":\"How to perform stress relief on S1 tool steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Heat the workpiece uniformly to 650\u00b0C\u2013675\u00b0C (1200\u00b0F\u20131250\u00b0F). Allow a soak time of 1 hour per 25 mm (1 inch) of thickness (minimum 1 hour), then cool slowly in air.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/s1-tool-steel-heat-treatment-guide\\\/#faq-question-1768368533255\",\"position\":3,\"url\":\"https:\\\/\\\/aobosteel.com\\\/s1-tool-steel-heat-treatment-guide\\\/#faq-question-1768368533255\",\"name\":\"What is the recommended quenching method for S1 steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Oil quenching is strongly recommended to ensure optimal toughness and minimize cracking. 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Quench in preheated, circulating oil until the workpiece temperature drops to 50\u00b0C\u201370\u00b0C (120\u00b0F\u2013160\u00b0F).","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/s1-tool-steel-heat-treatment-guide\/#faq-question-1768368534070","position":4,"url":"https:\/\/aobosteel.com\/s1-tool-steel-heat-treatment-guide\/#faq-question-1768368534070","name":"Como prevenir fissuras de t\u00eampera no a\u00e7o S1?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Temper the workpiece immediately after quenching while it is still warm (50\u00b0C\u201370\u00b0C); do not let it cool to room temperature. 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Soak for a minimum of 2 hours for every 25 mm (1 inch) of thickness, cool to room temperature, and perform a secondary tempering cycle."}]}],"inLanguage":"pt-BR"}]}},"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/pt\/blog\/author\/admin\/"},"uagb_comment_info":0,"uagb_excerpt":"S1 tool steel is a shock-resistant tungsten-chromium-vanadium alloy steel designed for applications demanding high toughness and sustained impact stress. It is widely used in pneumatic tools, chisels, punches, shear blades, and forming dies. The steel contains approximately 0.50% carbon, 2.50% tungsten, and 1.50% chromium. 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It offers a balanced combination of strength, wear resistance, and hardenability,&hellip;","_links":{"self":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/12240","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=12240"}],"version-history":[{"count":0,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/12240\/revisions"}],"wp:attachment":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/media?parent=12240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}