{"id":11734,"date":"2026-01-04T11:32:34","date_gmt":"2026-01-04T03:32:34","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=11734"},"modified":"2026-06-06T11:46:39","modified_gmt":"2026-06-06T03:46:39","slug":"o2-tool-steel-heat-treatment","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/o2-tool-steel-heat-treatment\/","title":{"rendered":"Guia de Tratamento T\u00e9rmico do A\u00e7o Ferramenta O2"},"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 O2<\/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 O2<\/h1><p class=\"uagb-desc-text\">Diretrizes de tratamento t\u00e9rmico para a\u00e7o ferramenta O2 (DIN 1.2842\/JIS SKS31), com foco na resist\u00eancia ao desgaste, usinabilidade e estabilidade dimensional para aplica\u00e7\u00f5es em ferramentas de 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<\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-5fc8f745 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/aobosteel.com\/pt\/o2-tool-steel\/\">A\u00e7o para ferramentas O2<\/a> \u00c9 um a\u00e7o ferramenta para trabalho a frio temperado em \u00f3leo, com alta dureza, alta resist\u00eancia ao desgaste e m\u00ednima deforma\u00e7\u00e3o durante o tratamento t\u00e9rmico. Comparado ao a\u00e7o temperado em \u00e1gua, o a\u00e7o O2 apresenta melhor estabilidade dimensional e maior tenacidade ap\u00f3s t\u00eampera completa.<sup data-fn=\"6666d472-7e42-4e7d-8427-2b3ef148d636\" class=\"fn\"><a id=\"6666d472-7e42-4e7d-8427-2b3ef148d636-link\" href=\"#6666d472-7e42-4e7d-8427-2b3ef148d636\">1<\/a><\/sup>. Os graus equivalentes de a\u00e7o para ferramentas O2 incluem:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Padr\u00e3o<\/th><th>Grau<\/th><\/tr><\/thead><tbody><tr><td>EN\/DIN<\/td><td>1,2842 \/ 90MnCrV8<\/td><\/tr><tr><td>JIS<\/td><td>SKS31<\/td><\/tr><tr><td>GB<\/td><td>9Mn2V<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 id=\"h-a-quick-checklist-of-o2-tool-steel-heat-treatment\" class=\"wp-block-heading\">Lista de verifica\u00e7\u00e3o r\u00e1pida do tratamento t\u00e9rmico do a\u00e7o ferramenta O2<\/h2>\n\n\n\n<div class=\"schema-how-to wp-block-yoast-how-to-block\"><p class=\"schema-how-to-description\">Siga estes passos sequenciais para o tratamento t\u00e9rmico adequado do a\u00e7o ferramenta O2: pr\u00e9-aquecimento, t\u00eampera (austenitiza\u00e7\u00e3o), t\u00eampera em \u00f3leo e revenido.<br><\/p> <ol class=\"schema-how-to-steps\"><li class=\"schema-how-to-step\" id=\"how-to-step-1765333742053\"><strong class=\"schema-how-to-step-name\"><strong>Pr\u00e9-aquecimento<\/strong><\/strong> <p class=\"schema-how-to-step-text\">Pr\u00e9-aque\u00e7a a 649\u2013677 \u00b0C (1200\u20131250 \u00b0F) at\u00e9 que esteja uniformemente aquecido. Isso reduz o choque t\u00e9rmico e o risco de deforma\u00e7\u00e3o ou rachaduras.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1765333794811\"><strong class=\"schema-how-to-step-name\"><strong>Austenitiza\u00e7\u00e3o (endurecimento)<\/strong><\/strong> <p class=\"schema-how-to-step-text\">Aque\u00e7a a 760\u2013800 \u00b0C (1400\u20131472 \u00b0F). Os carbonetos da liga se dissolvem e a microestrutura se transforma em austenita.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1765333800667\"><strong class=\"schema-how-to-step-name\"><strong>Resfriamento<\/strong><\/strong> <p class=\"schema-how-to-step-text\">Resfrie em \u00f3leo. Pare quando a pe\u00e7a atingir 66\u201393\u00b0C (150\u2013200\u00b0F).<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1765333801451\"><strong class=\"schema-how-to-step-name\"><strong>T\u00eampera<\/strong><\/strong> <p class=\"schema-how-to-step-text\">Comece imediatamente assim que a pe\u00e7a esfriar a 52\u201365 \u00b0C (125\u2013150 \u00b0F). Revenimento a 150\u2013260 \u00b0C (300\u2013500 \u00b0F). Tempo m\u00ednimo de perman\u00eancia: 2 horas por polegada (4,7 min\/mm) de se\u00e7\u00e3o transversal.<\/p> <\/li><\/ol><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Processo de tratamento t\u00e9rmico<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Pr\u00e9-aquecimento<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pr\u00e9-aque\u00e7a a 649\u2013677 \u00b0C (1200\u20131250 \u00b0F) e mantenha nessa temperatura at\u00e9 que a pe\u00e7a esteja aquecida uniformemente. Isso reduz o choque t\u00e9rmico e o risco de deforma\u00e7\u00e3o ou fissuras quando o a\u00e7o entra no forno de austenitiza\u00e7\u00e3o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Austenitiza\u00e7\u00e3o<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Aque\u00e7a a 760\u2013800 \u00b0C (1400\u20131472 \u00b0F). Nessa temperatura, os carbonetos da liga se dissolvem e a microestrutura se transforma em austenita. 790 \u00b0C (1450 \u00b0F) \u00e9 a temperatura padr\u00e3o recomendada para a maioria das aplica\u00e7\u00f5es. Controle cuidadosamente o tempo de perman\u00eancia \u2014 o tempo excessivo aumenta o teor de austenita retida e reduz a dureza final.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Resfriamento<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Resfrie a pe\u00e7a em \u00f3leo, parando quando ela atingir 66\u201393 \u00b0C (150\u2013200 \u00b0F). Mantenha a temperatura do \u00f3leo de t\u00eampera entre 50\u201370 \u00b0C (120\u2013160 \u00b0F). N\u00e3o use \u00e1gua ou salmoura \u2014 o risco de rachaduras \u00e9 alto. N\u00e3o envolva a pe\u00e7a em papel alum\u00ednio, pois isso impede o contato com o \u00f3leo.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"765\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/01\/O2-Tool-Steel-Isothermal-Transformation-Diagram.avif\" alt=\"Diagrama de transforma\u00e7\u00e3o isot\u00e9rmica do a\u00e7o ferramenta O2\" class=\"wp-image-11939\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/01\/O2-Tool-Steel-Isothermal-Transformation-Diagram.avif 1024w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/01\/O2-Tool-Steel-Isothermal-Transformation-Diagram-300x224.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/01\/O2-Tool-Steel-Isothermal-Transformation-Diagram-768x574.avif 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/01\/O2-Tool-Steel-Isothermal-Transformation-Diagram-16x12.avif 16w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Diagrama de transforma\u00e7\u00e3o isot\u00e9rmica do a\u00e7o ferramenta O2<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">T\u00eampera<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Inicie o revenimento imediatamente ap\u00f3s a pe\u00e7a esfriar a 52\u201365 \u00b0C (125\u2013150 \u00b0F) \u2014 n\u00e3o deixe que ela atinja a temperatura ambiente primeiro. Revena a 150\u2013260 \u00b0C (300\u2013500 \u00b0F). Tempo m\u00ednimo de perman\u00eancia: 2 horas por polegada (4,7 min\/mm) de se\u00e7\u00e3o transversal, seguido de resfriamento ao ar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para aplica\u00e7\u00f5es exigentes, o revenimento duplo \u00e9 prefer\u00edvel. Para a maioria das ferramentas, um revenimento \u00fanico a 175\u2013205 \u00b0C (345\u2013400 \u00b0F) atinge uma dureza de trabalho de 58\u201362 HRC.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Dureza versus temperatura de revenimento:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Temperatura de t\u00eampera \u00b0C (\u00b0F)<\/th><th>Dureza (HRC)<\/th><\/tr><\/thead><tbody><tr><td>150 (300)<\/td><td>62.5<\/td><\/tr><tr><td>205 (400)<\/td><td>59.5<\/td><\/tr><tr><td>260 (500)<\/td><td>56.5<\/td><\/tr><tr><td>315 (600)<\/td><td>54.0<\/td><\/tr><tr><td>370 (700)<\/td><td>52.0<\/td><\/tr><tr><td>425 (800)<\/td><td>49.5<\/td><\/tr><tr><td>480 (900)<\/td><td>46.0<\/td><\/tr><tr><td>540 (1000)<\/td><td>41.5<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Problemas comuns e solu\u00e7\u00f5es<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Deforma\u00e7\u00e3o e altera\u00e7\u00f5es dimensionais<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A deforma\u00e7\u00e3o no a\u00e7o O2 geralmente \u00e9 causada por taxas de t\u00eampera excessivas ou aquecimento irregular. Tr\u00eas controles:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Martemperagem:<\/strong> Interrompa o resfriamento em \u00f3leo quente ou sal fundido, mantido a 14\u201328\u00b0C (25\u201350\u00b0F) acima da temperatura de in\u00edcio da martensita (Ms), mantenha at\u00e9 que a temperatura da pe\u00e7a se iguale e, em seguida, resfrie ao ar.<\/li>\n\n\n\n<li><strong>Pr\u00e9-aquecimento:<\/strong> O pr\u00e9-aquecimento a 650\u00b0C (1200\u00b0F) antes da austenitiza\u00e7\u00e3o reduz significativamente a distor\u00e7\u00e3o durante o endurecimento.<\/li>\n\n\n\n<li><strong>Toler\u00e2ncia de usinagem:<\/strong> Ap\u00f3s o desbaste, mantenha uma quantidade suficiente de material para corrigir qualquer distor\u00e7\u00e3o resultante do tratamento t\u00e9rmico final.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Trincamento por t\u00eampera<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">As causas incluem taxas de aquecimento excessivas, cantos vivos e mudan\u00e7as abruptas na se\u00e7\u00e3o transversal da geometria da ferramenta.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Somente \u00f3leo para resfriamento. \u00c1gua e salmoura s\u00e3o proibidas.<\/li>\n\n\n\n<li>Resfrie a pe\u00e7a antes que ela esfrie completamente \u00e0 temperatura ambiente para aliviar a tens\u00e3o residual.<\/li>\n\n\n\n<li>Para geometrias complexas, realize um recozimento de al\u00edvio de tens\u00f5es a 650\u2013675\u00b0C ap\u00f3s o desbaste e antes do endurecimento final.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Descarboneta\u00e7\u00e3o superficial<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">O a\u00e7o O2 \u00e9 sens\u00edvel \u00e0 descarboneta\u00e7\u00e3o durante o aquecimento. A perda de carbono na superf\u00edcie produz uma camada macia que reduz a resist\u00eancia ao desgaste.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Calor em uma atmosfera protetora \u2014 um g\u00e1s endot\u00e9rmico, um banho de sal ou o v\u00e1cuo.<\/li>\n\n\n\n<li>Remova toda a camada de \u00f3xido e qualquer camada descarbonetada existente da superf\u00edcie antes do tratamento t\u00e9rmico final.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Austenita retida e controle de dureza<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A austenitiza\u00e7\u00e3o acima da temperatura recomendada aumenta o teor de austenita retida, resultando em dureza insuficiente e instabilidade dimensional ap\u00f3s o resfriamento brusco.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mantenha a temperatura entre 760 e 800 \u00b0C. Ultrapassar esse limite \u00e9 a principal causa de problemas com austenita retida.<\/li>\n\n\n\n<li>O tratamento criog\u00eanico a \u2212196\u00b0C (\u2212321\u00b0F) converte uma por\u00e7\u00e3o significativa da austenita retida em martensita.<\/li>\n\n\n\n<li>Revenimento a 175\u2013205\u00b0C (345\u2013400\u00b0F) para atingir uma dureza de trabalho est\u00e1vel de 58\u201362 HRC.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Limites de aplica\u00e7\u00e3o<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">O a\u00e7o O2 n\u00e3o possui dureza a quente. \u00c9 adequado para estampagem a frio, corte e conforma\u00e7\u00e3o em temperatura ambiente. N\u00e3o deve ser utilizado em aplica\u00e7\u00f5es de trabalho a quente, como fundi\u00e7\u00e3o sob press\u00e3o ou forjamento a quente.<\/p>\n\n\n\n<h2 id=\"h-faq\" class=\"wp-block-heading\">Perguntas frequentes<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1765334229948\"><strong class=\"schema-faq-question\">Qual a temperatura utilizada para o pr\u00e9-aquecimento do a\u00e7o ferramenta O2?<br\/><\/strong> <p class=\"schema-faq-answer\">O a\u00e7o ferramenta O2 deve ser pr\u00e9-aquecido a <strong>649-677\u00b0C (1200-1250\u00b0F)<\/strong> at\u00e9 que o material esteja aquecido uniformemente. O pr\u00e9-aquecimento ajuda a reduzir o choque t\u00e9rmico e diminui o risco de deforma\u00e7\u00e3o ou fissuras.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1765334242713\"><strong class=\"schema-faq-question\">Qual \u00e9 a temperatura de austenitiza\u00e7\u00e3o recomendada para o a\u00e7o ferramenta O2?<br\/><\/strong> <p class=\"schema-faq-answer\">A faixa de temperatura t\u00edpica de austenitiza\u00e7\u00e3o (endurecimento) para o a\u00e7o O2 \u00e9 <strong>760 a 800\u00b0C (1400 a 1472\u00b0F)<\/strong>. Nessa temperatura, os carbonetos de liga complexos se dissolvem e a microestrutura se transforma em austenita.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1765334243549\"><strong class=\"schema-faq-question\">Como \u00e9 feito o resfriamento r\u00e1pido do a\u00e7o ferramenta O2 ap\u00f3s o endurecimento?<br\/><\/strong> <p class=\"schema-faq-answer\">Ap\u00f3s a austenitiza\u00e7\u00e3o, o a\u00e7o ferramenta O2 \u00e9 tipicamente submetido a um processo r\u00e1pido de aquecimento. <span style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"><strong>temperado em \u00f3leo<\/strong>\u00a0<\/span>Para transformar a austenita em martensita dura, o material deve ser resfriado a uma temperatura entre <strong>66 e 93 \u00b0C (150 e 200 \u00b0F)<\/strong> antes de prosseguir com a t\u00eampera.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1765334244305\"><strong class=\"schema-faq-question\">Quando deve come\u00e7ar o revenimento do a\u00e7o ferramenta O2 ap\u00f3s a t\u00eampera?<br><\/strong> <p class=\"schema-faq-answer\">O revenimento deve come\u00e7ar imediatamente ap\u00f3s a temperatura da etapa de t\u00eampera ter ca\u00eddo para <strong>52-65\u00b0C (125-150\u00b0F)<\/strong>. Essa aplica\u00e7\u00e3o imediata \u00e9 crucial para evitar efeitos adversos na vida \u00fatil da ferramenta e impedir a estabiliza\u00e7\u00e3o da austenita retida.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1765334289108\"><strong class=\"schema-faq-question\">Qual \u00e9 o tempo de perman\u00eancia necess\u00e1rio durante o revenimento do a\u00e7o O2?<br\/><\/strong> <p class=\"schema-faq-answer\">Cada ciclo de revenimento para a\u00e7o ferramenta O2 requer um tempo de perman\u00eancia de pelo menos <strong>2 horas por polegada (4,7 minutos por mil\u00edmetro)<\/strong> da se\u00e7\u00e3o transversal. O revenimento normalmente ocorre em baixas temperaturas, entre 150 \u00b0C e 260 \u00b0C (300 \u00b0F a 500 \u00b0F).<strong>)<\/strong> para manter alta dureza.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1765334306984\"><strong class=\"schema-faq-question\">O a\u00e7o ferramenta O2 requer t\u00eampera dupla?<br\/><\/strong> <p class=\"schema-faq-answer\">O a\u00e7o ferramenta O2 geralmente requer apenas um \u00fanico ciclo de revenimento. No entanto, o revenimento duplo \u00e9 por vezes preferido, exigindo arrefecimento ao ar at\u00e9 \u00e0 temperatura ambiente entre os revenimentos.<\/p> <\/div> <\/div>\n\n\n<ol class=\"wp-block-footnotes\"><li id=\"6666d472-7e42-4e7d-8427-2b3ef148d636\">Nee, JG (Revisor T\u00e9cnico Chefe e Editor-Chefe). (2010). <em>Fundamentos do Projeto de Ferramentas<\/em> (6\u00aa ed.). Sociedade de Engenheiros de Manufatura. <a href=\"#6666d472-7e42-4e7d-8427-2b3ef148d636-link\" aria-label=\"Ir para a refer\u00eancia 1 na nota de rodap\u00e9\">\u21a9\ufe0e<\/a><\/li><\/ol><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>O2 tool steel is an oil-quenched cold work tool steel with high hardness, high wear resistance, and minimal deformation during heat treatment. Compared with water-quenched steel, O2 steel exhibits better dimensional stability and higher toughness after complete quenching\u00a011. The equivalent grades of O2 tool steel include: Standard Grade EN\/DIN 1.2842 \/ 90MnCrV8 JIS SKS31 GB [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_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":"[{\"content\":\"Nee, J. G. (Chief Technical Reviewer &amp; Managing Editor). (2010). <em>Fundamentals of Tool Design<\/em> (6th ed.). Society of Manufacturing Engineers.\",\"id\":\"6666d472-7e42-4e7d-8427-2b3ef148d636\"}]"},"class_list":["post-11734","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.3 (Yoast SEO v28.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>O2 Tool Steel Heat Treatment Guide - AoboSteel<\/title>\n<meta name=\"description\" content=\"Complete O2 tool steel heat treatment guide: austenitize at 760\u2013800\u00b0C, oil quench, temper to 58\u201362 HRC. 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Preheating helps reduce thermal shock and lowers the risk of deformation or cracking.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#faq-question-1765334242713\",\"position\":2,\"url\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#faq-question-1765334242713\",\"name\":\"What is the recommended austenitizing temperature for O2 tool steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The typical austenitizing (hardening) temperature range for O2 steel is <strong>760 to 800\u00b0C (1400 to 1472\u00b0F)<\\\/strong>. At this temperature, complex alloy carbides are dissolved, and the microstructure transforms into austenite.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#faq-question-1765334243549\",\"position\":3,\"url\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#faq-question-1765334243549\",\"name\":\"How is O2 tool steel quenched after hardening?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"After austenitizing, O2 tool steel is typically rapidly <strong>quenched in oil<\\\/strong>\u00a0to transform the austenite into hard martensite. The material should be cooled to a temperature between <strong>66 and 93 \u00b0C (150 and 200 \u00b0F)<\\\/strong> before proceeding to tempering.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#faq-question-1765334244305\",\"position\":4,\"url\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#faq-question-1765334244305\",\"name\":\"When must tempering of O2 tool steel begin after quenching?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Tempering must begin immediately when the temperature from the quenching step has dropped to <strong>52-65\u00b0C (125-150\u00b0F)<\\\/strong>. This immediate timing is critical to prevent adverse effects on tool life and avoid stabilization of retained austenite.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#faq-question-1765334289108\",\"position\":5,\"url\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#faq-question-1765334289108\",\"name\":\"What is the required soak time during tempering for O2 steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Each tempering cycle for O2 tool steel requires a soak time of at least <strong>2 hours per inch (4.7 minutes per millimeter)<\\\/strong> of cross-section. Tempering typically occurs at low temperatures between 150 \u00b0C and 260 \u00b0C (300 \u00b0F to 500 \u00b0F<strong>)<\\\/strong> to maintain high hardness.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#faq-question-1765334306984\",\"position\":6,\"url\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#faq-question-1765334306984\",\"name\":\"Does O2 tool steel require double tempering?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"O2 tool steel commonly requires only a single tempering cycle. However, double tempering is sometimes preferred, requiring air cooling to room temperature between temperings.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"HowTo\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#howto-1\",\"name\":\"O2 Tool Steel Heat Treatment Guide\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#article\"},\"description\":\"Follow these sequential steps for proper heat treatment of O2 tool steel: preheating, hardening (austenitizing), oil quenching, and tempering.<br>\",\"step\":[{\"@type\":\"HowToStep\",\"url\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#how-to-step-1765333742053\",\"name\":\"Preheating\",\"itemListElement\":[{\"@type\":\"HowToDirection\",\"text\":\"Preheat to 649\u2013677\u00b0C (1200\u20131250\u00b0F) until evenly heated. Reduces thermal shock and the risk of deformation or cracking.\"}]},{\"@type\":\"HowToStep\",\"url\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#how-to-step-1765333794811\",\"name\":\"Austenitizing (Hardening)\",\"itemListElement\":[{\"@type\":\"HowToDirection\",\"text\":\"Heat to 760\u2013800\u00b0C (1400\u20131472\u00b0F). Alloy carbides dissolve, and the microstructure transforms to austenite.\"}]},{\"@type\":\"HowToStep\",\"url\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#how-to-step-1765333800667\",\"name\":\"Quenching\",\"itemListElement\":[{\"@type\":\"HowToDirection\",\"text\":\"Quench in oil. Stop when the workpiece reaches 66\u201393\u00b0C (150\u2013200\u00b0F).\"}]},{\"@type\":\"HowToStep\",\"url\":\"https:\\\/\\\/aobosteel.com\\\/o2-tool-steel-heat-treatment\\\/#how-to-step-1765333801451\",\"name\":\"Tempering\",\"itemListElement\":[{\"@type\":\"HowToDirection\",\"text\":\"Begin immediately once the workpiece cools to 52\u201365\u00b0C (125\u2013150\u00b0F). Temper at 150\u2013260\u00b0C (300\u2013500\u00b0F). Minimum soak: 2 hours per inch (4.7 min\\\/mm) of cross-section.\"}]}],\"inLanguage\":\"pt-BR\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Guia de Tratamento T\u00e9rmico do A\u00e7o Ferramenta O2 - AoboSteel","description":"Guia completo de tratamento t\u00e9rmico para a\u00e7o ferramenta O2: austenitiza\u00e7\u00e3o a 760\u2013800 \u00b0C, t\u00eampera em \u00f3leo e revenido a 58\u201362 HRC. 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Preheating helps reduce thermal shock and lowers the risk of deformation or cracking.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#faq-question-1765334242713","position":2,"url":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#faq-question-1765334242713","name":"Qual \u00e9 a temperatura de austenitiza\u00e7\u00e3o recomendada para o a\u00e7o ferramenta O2?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The typical austenitizing (hardening) temperature range for O2 steel is <strong>760 to 800\u00b0C (1400 to 1472\u00b0F)<\/strong>. At this temperature, complex alloy carbides are dissolved, and the microstructure transforms into austenite.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#faq-question-1765334243549","position":3,"url":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#faq-question-1765334243549","name":"Como \u00e9 feito o resfriamento r\u00e1pido do a\u00e7o ferramenta O2 ap\u00f3s o endurecimento?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"After austenitizing, O2 tool steel is typically rapidly <strong>quenched in oil<\/strong>\u00a0to transform the austenite into hard martensite. The material should be cooled to a temperature between <strong>66 and 93 \u00b0C (150 and 200 \u00b0F)<\/strong> before proceeding to tempering.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#faq-question-1765334244305","position":4,"url":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#faq-question-1765334244305","name":"Quando deve come\u00e7ar o revenimento do a\u00e7o ferramenta O2 ap\u00f3s a t\u00eampera?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Tempering must begin immediately when the temperature from the quenching step has dropped to <strong>52-65\u00b0C (125-150\u00b0F)<\/strong>. This immediate timing is critical to prevent adverse effects on tool life and avoid stabilization of retained austenite.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#faq-question-1765334289108","position":5,"url":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#faq-question-1765334289108","name":"Qual \u00e9 o tempo de perman\u00eancia necess\u00e1rio durante o revenimento do a\u00e7o O2?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Each tempering cycle for O2 tool steel requires a soak time of at least <strong>2 hours per inch (4.7 minutes per millimeter)<\/strong> of cross-section. Tempering typically occurs at low temperatures between 150 \u00b0C and 260 \u00b0C (300 \u00b0F to 500 \u00b0F<strong>)<\/strong> to maintain high hardness.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#faq-question-1765334306984","position":6,"url":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#faq-question-1765334306984","name":"O a\u00e7o ferramenta O2 requer t\u00eampera dupla?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"O2 tool steel commonly requires only a single tempering cycle. However, double tempering is sometimes preferred, requiring air cooling to room temperature between temperings.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"HowTo","@id":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#howto-1","name":"Guia de Tratamento T\u00e9rmico do A\u00e7o Ferramenta O2","mainEntityOfPage":{"@id":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#article"},"description":"Siga estes passos sequenciais para o tratamento t\u00e9rmico adequado do a\u00e7o ferramenta O2: pr\u00e9-aquecimento, t\u00eampera (austenitiza\u00e7\u00e3o), t\u00eampera em \u00f3leo e revenido.<br>","step":[{"@type":"HowToStep","url":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#how-to-step-1765333742053","name":"Preheating","itemListElement":[{"@type":"HowToDirection","text":"Preheat to 649\u2013677\u00b0C (1200\u20131250\u00b0F) until evenly heated. Reduces thermal shock and the risk of deformation or cracking."}]},{"@type":"HowToStep","url":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#how-to-step-1765333794811","name":"Austenitizing (Hardening)","itemListElement":[{"@type":"HowToDirection","text":"Heat to 760\u2013800\u00b0C (1400\u20131472\u00b0F). Alloy carbides dissolve, and the microstructure transforms to austenite."}]},{"@type":"HowToStep","url":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#how-to-step-1765333800667","name":"Quenching","itemListElement":[{"@type":"HowToDirection","text":"Quench in oil. Stop when the workpiece reaches 66\u201393\u00b0C (150\u2013200\u00b0F)."}]},{"@type":"HowToStep","url":"https:\/\/aobosteel.com\/o2-tool-steel-heat-treatment\/#how-to-step-1765333801451","name":"Tempering","itemListElement":[{"@type":"HowToDirection","text":"Begin immediately once the workpiece cools to 52\u201365\u00b0C (125\u2013150\u00b0F). Temper at 150\u2013260\u00b0C (300\u2013500\u00b0F). Minimum soak: 2 hours per inch (4.7 min\/mm) of cross-section."}]}],"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":"O2 tool steel is an oil-quenched cold work tool steel with high hardness, high wear resistance, and minimal deformation during heat treatment. Compared with water-quenched steel, O2 steel exhibits better dimensional stability and higher toughness after complete quenching\u00a011. The equivalent grades of O2 tool steel include: Standard Grade EN\/DIN 1.2842 \/ 90MnCrV8 JIS SKS31 GB&hellip;","rttpg_featured_image_url":null,"rttpg_author":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/pt\/blog\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"O2 tool steel is an oil-quenched cold work tool steel with high hardness, high wear resistance, and minimal deformation during heat treatment. Compared with water-quenched steel, O2 steel exhibits better dimensional stability and higher toughness after complete quenching\u00a011. The equivalent grades of O2 tool steel include: Standard Grade EN\/DIN 1.2842 \/ 90MnCrV8 JIS SKS31 GB&hellip;","_links":{"self":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/11734","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=11734"}],"version-history":[{"count":0,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/11734\/revisions"}],"wp:attachment":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/media?parent=11734"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}