{"id":11776,"date":"2025-12-29T19:03:08","date_gmt":"2025-12-29T11:03:08","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=11776"},"modified":"2026-06-27T20:00:22","modified_gmt":"2026-06-27T12:00:22","slug":"d2-tool-steel-heat-treatment-guide","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/d2-tool-steel-heat-treatment-guide\/","title":{"rendered":"Guia de Tratamento T\u00e9rmico D2: Tabela de Revenimento, Dureza e Processo"},"content":{"rendered":"<section class=\"aobo-d2-heat-treatment-page\">\n  <style>\n    .aobo-d2-heat-treatment-page {\n      --aobo-blue: #0c56d0;\n      --aobo-blue-soft: #eaf2ff;\n      --aobo-border: #d7e5fb;\n      --aobo-text: #203044;\n      --aobo-muted: #617087;\n      --aobo-orange: #f59b23;\n      --aobo-shadow: 0 18px 45px rgba(12, 86, 208, 0.10);\n      font-family: inherit;\n      color: var(--aobo-text);\n      line-height: 1.7;\n      background: transparent;\n      padding: 0;\n      box-sizing: border-box;\n    }\n\n    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.aobo-supply-actions {\n        width: 100%;\n      }\n\n      .aobo-final-cta .aobo-btn {\n        width: 100%;\n      }\n    }\n  <\/style>\n\n  <div class=\"aobo-wrap\">\n    <header class=\"aobo-hero\">\n      <h1>Guia de Tratamento T\u00e9rmico de A\u00e7o para Ferramentas D2<\/h1>\n      <p><a href=\"https:\/\/aobosteel.com\/pt\/d2-steel-properties\/\">A\u00e7o para ferramentas D2<\/a> O a\u00e7o geralmente passa por tratamento t\u00e9rmico, que consiste em pr\u00e9-aquecimento a 649\u2013677 \u00b0C (1200\u20131250 \u00b0F), austenitiza\u00e7\u00e3o a 980\u20131025 \u00b0C (1795\u20131875 \u00b0F), t\u00eampera em ar, g\u00e1s, \u00f3leo ou banho de sal, dependendo da dimens\u00e3o da se\u00e7\u00e3o transversal, e revenimento duplo a 480\u2013515 \u00b0C (900\u2013960 \u00b0F). Em muitas aplica\u00e7\u00f5es de ferramentas para trabalho a frio, esse processo produz uma dureza de cerca de 58\u201360 HRC, ao mesmo tempo que melhora a estabilidade dimensional e reduz o risco de austenita retida, trincas e distor\u00e7\u00f5es.<\/p>\n      <p>Como o D2 \u00e9 um a\u00e7o ferramenta de alta dureza ao ar, com alto teor de carbono e cromo, o tratamento t\u00e9rmico deve ser controlado em rela\u00e7\u00e3o \u00e0 temperatura, tempo de perman\u00eancia, dimens\u00f5es da se\u00e7\u00e3o transversal, m\u00e9todo de t\u00eampera e estrat\u00e9gia de revenido. Um pun\u00e7\u00e3o pequeno, um bloco de matriz grande e um calibrador de precis\u00e3o nem sempre podem ser usados no mesmo processo. Este guia explica a sequ\u00eancia pr\u00e1tica de tratamento t\u00e9rmico do D2, incluindo pr\u00e9-aquecimento, austenitiza\u00e7\u00e3o, t\u00eampera, tratamento criog\u00eanico opcional, revenido, sele\u00e7\u00e3o de dureza, riscos relacionados \u00e0s dimens\u00f5es da se\u00e7\u00e3o transversal e falhas comuns no tratamento t\u00e9rmico.<\/p>\n    <\/header>\n\n    <main class=\"aobo-article\">\n      <h2>Tabela de par\u00e2metros r\u00e1pidos para tratamento t\u00e9rmico D2<\/h2>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead><tr><th>Etapa<\/th><th>Faixa recomendada<\/th><th>Finalidade<\/th><\/tr><\/thead>\n          <tbody>\n            <tr><td>Pr\u00e9-aquecimento<\/td><td>1200\u20131250\u00b0F \/ 649\u2013677\u00b0C<\/td><td>Reduzir o risco de choque t\u00e9rmico e fissuras<\/td><\/tr>\n            <tr><td>Austenitiza\u00e7\u00e3o<\/td><td>1795\u20131875\u00b0F \/ 980\u20131025\u00b0C<\/td><td>Formam austenita e dissolvem carbonetos de liga.<\/td><\/tr>\n            <tr><td>Resfriamento<\/td><td>Banho de ar, g\u00e1s, \u00f3leo ou sal, dependendo do tamanho da se\u00e7\u00e3o.<\/td><td>Endurecer o a\u00e7o com distor\u00e7\u00e3o controlada.<\/td><\/tr>\n            <tr><td>Tratamento criog\u00eanico opcional<\/td><td>at\u00e9 -196\u00b0C<\/td><td>Reduzir a austenita retida e melhorar a estabilidade dimensional.<\/td><\/tr>\n            <tr><td>T\u00eampera<\/td><td>900\u2013960\u00b0F \/ 480\u2013515\u00b0C, t\u00eampera dupla<\/td><td>Melhorar a estabilidade e atingir cerca de 58\u201360 HRC.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <h2>Como realizar o tratamento t\u00e9rmico do D2 \u2013 Passo a passo<\/h2>\n      <p>O tratamento t\u00e9rmico D2 inclui cinco etapas principais: pr\u00e9-aquecimento, austenitiza\u00e7\u00e3o, t\u00eampera, tratamento criog\u00eanico opcional e revenido. Cada etapa afeta a dureza final, a altera\u00e7\u00e3o dimensional, a austenita retida e o risco de fissura\u00e7\u00e3o.<\/p>\n      <p>Os par\u00e2metros abaixo s\u00e3o faixas de refer\u00eancia pr\u00e1ticas. Os ajustes finais do tratamento t\u00e9rmico devem ser feitos de acordo com a capacidade do forno, a espessura da se\u00e7\u00e3o, a geometria da pe\u00e7a e a dureza de trabalho necess\u00e1ria.<\/p>\n\n      <h3>Etapa 1: Pr\u00e9-aquecimento do a\u00e7o ferramenta D2<\/h3>\n      <p>O pr\u00e9-aquecimento reduz o choque t\u00e9rmico quando o D2 \u00e9 aquecido at\u00e9 a temperatura de endurecimento. Isso \u00e9 importante porque o D2 tem uma condutividade t\u00e9rmica relativamente baixa. Se a superf\u00edcie aquecer muito mais r\u00e1pido que o n\u00facleo, a tens\u00e3o interna pode causar distor\u00e7\u00e3o ou fissuras.<\/p>\n      <p>A temperatura t\u00edpica de pr\u00e9-aquecimento \u00e9 de 649\u2013677 \u00b0C (1200\u20131250 \u00b0F). A pe\u00e7a deve ser mantida nessa temperatura at\u00e9 que a se\u00e7\u00e3o transversal esteja aquecida uniformemente. Se\u00e7\u00f5es espessas requerem um tempo de equaliza\u00e7\u00e3o maior do que pe\u00e7as finas.<\/p>\n      <p>O a\u00e7o D2 deve ser aquecido em um forno a v\u00e1cuo, um forno de atmosfera controlada, um banho de sal neutro ou sob folha de a\u00e7o inoxid\u00e1vel. Sem prote\u00e7\u00e3o superficial, a oxida\u00e7\u00e3o e a descarboneta\u00e7\u00e3o podem reduzir a dureza superficial e a resist\u00eancia ao desgaste ap\u00f3s o endurecimento.<\/p>\n\n      <h3>Etapa 2: Austenitiza\u00e7\u00e3o e t\u00eampera do a\u00e7o D2<\/h3>\n      <p>Ap\u00f3s o pr\u00e9-aquecimento, a temperatura D2 \u00e9 elevada at\u00e9 a temperatura de austenitiza\u00e7\u00e3o. A faixa t\u00edpica \u00e9 de 980\u20131025 \u00b0C (1795\u20131875 \u00b0F), sendo 1010 \u00b0C (1850 \u00b0F) frequentemente utilizada como refer\u00eancia pr\u00e1tica.<\/p>\n      <p>O tempo de imers\u00e3o deve come\u00e7ar somente depois que toda a se\u00e7\u00e3o atingir a temperatura desejada. Uma refer\u00eancia comum \u00e9 de 45 a 60 minutos por polegada de espessura, ajustada pela carga do forno, se\u00e7\u00e3o transversal e geometria da ferramenta.<\/p>\n      <p>Temperaturas muito baixas ou tempos de imers\u00e3o muito curtos podem resultar em carbonetos insuficientemente dissolvidos, reduzindo a dureza e a resist\u00eancia ao desgaste. Temperaturas muito altas ou tempos de imers\u00e3o muito longos podem aumentar a austenita retida, o crescimento de gr\u00e3os, a fragilidade e o risco de fissura\u00e7\u00e3o.<\/p>\n      <p>Para obter detalhes sobre a sele\u00e7\u00e3o de temperatura, incluindo como 980 \u00b0C, 1010 \u00b0C e 1025 \u00b0C afetam a dissolu\u00e7\u00e3o de carbonetos, a austenita retida e a dureza, consulte o <a href=\"https:\/\/aobosteel.com\/pt\/d2-austenitizing-temperature\/\">temperatura de austenitiza\u00e7\u00e3o D2<\/a> guia.<\/p>\n\n      <h3>Etapa 3: T\u00eampera do a\u00e7o ferramenta D2<\/h3>\n      <p>O a\u00e7o D2 \u00e9 um a\u00e7o ferramenta de t\u00eampera ao ar. O resfriamento controlado ao ar ou a t\u00eampera a g\u00e1s s\u00e3o frequentemente preferidos, pois reduzem a distor\u00e7\u00e3o em compara\u00e7\u00e3o com a t\u00eampera l\u00edquida severa.<\/p>\n      <p>Para se\u00e7\u00f5es maiores ou geometrias especiais, pode-se utilizar t\u00eampera em banho de sal ou em \u00f3leo. Esses m\u00e9todos podem aumentar a velocidade de resfriamento, mas tamb\u00e9m aumentam a tens\u00e3o t\u00e9rmica e o risco de fissuras. O m\u00e9todo de t\u00eampera deve ser selecionado com base no tamanho da se\u00e7\u00e3o e na dureza necess\u00e1ria, e n\u00e3o por h\u00e1bito rotineiro.<\/p>\n      <p>Ap\u00f3s a t\u00eampera, a ferramenta deve normalmente arrefecer at\u00e9 cerca de 50\u201366 \u00b0C (120\u2013150 \u00b0F) antes do revenimento. Nesta fase, o a\u00e7o est\u00e1 duro, mas sob elevada tens\u00e3o. O revenimento deve come\u00e7ar imediatamente.<\/p>\n      <figure class=\"aobo-figure\">\n        <img decoding=\"async\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/12\/D2-Tool-Steel-Isothermal-Transformation-TTT-Diagram-showing-Pearlite-and-Bainite-Noses.avif\" alt=\"Diagrama TTT do a\u00e7o ferramenta D2\" loading=\"lazy\">\n        <figcaption>\n          <strong>Diagrama TTT do a\u00e7o ferramenta D2<\/strong>\n          Este diagrama mostra o comportamento da transforma\u00e7\u00e3o isot\u00e9rmica do a\u00e7o ferramenta D2 ap\u00f3s austenitiza\u00e7\u00e3o a 980 \u00b0C (1800 \u00b0F) durante 1 hora. Ele corrobora a discuss\u00e3o sobre t\u00eampera, demonstrando por que o D2 pode endurecer sob resfriamento controlado a ar ou g\u00e1s, embora a dimens\u00e3o da se\u00e7\u00e3o transversal e a taxa de resfriamento ainda afetem a dureza final e a estabilidade dimensional.<br>\n          Fonte: Tool Steels, George Adam Roberts, George Krauss, Richard Kennedy, p. 206, Fig. 12-3.\n        <\/figcaption>\n      <\/figure>\n\n      <h3>Etapa 4: Tratamento criog\u00eanico opcional para a\u00e7o ferramenta D2<\/h3>\n      <p>O tratamento criog\u00eanico \u00e9 opcional. Ele \u00e9 usado principalmente quando a estabilidade dimensional, o controle da austenita retida e a consist\u00eancia do desgaste s\u00e3o cr\u00edticos. \u00c9 mais relevante para matrizes de precis\u00e3o, pun\u00e7\u00f5es, calibradores, ferramentas de corte e ferramentas de alto desgaste do que para pe\u00e7as de uso geral.<\/p>\n      <p>O tratamento criog\u00eanico profundo pode resfriar o D2 at\u00e9 aproximadamente -196\u00b0C. O D2 endurecido n\u00e3o deve ser submetido a resfriamentos repentinos e descontrolados, pois mudan\u00e7as r\u00e1pidas de temperatura podem aumentar o risco de fissuras.<\/p>\n      <p>O tratamento criog\u00eanico pode ser realizado ap\u00f3s a t\u00eampera e antes do revenido, ou entre os ciclos de revenido, dependendo da pr\u00e1tica de tratamento t\u00e9rmico. Se for realizado ap\u00f3s a t\u00eampera, o revenido deve ser feito assim que a pe\u00e7a retornar \u00e0 temperatura ambiente. A martensita rec\u00e9m-transformada \u00e9 altamente tensionada e precisa ser revenida.<\/p>\n\n      <h3>Etapa 5: T\u00eampera do a\u00e7o ferramenta D2<\/h3>\n      <p>O revenimento \u00e9 necess\u00e1rio ap\u00f3s o endurecimento em D2. O a\u00e7o D2, ap\u00f3s t\u00eampera, \u00e9 duro, por\u00e9m quebradi\u00e7o. O revenimento reduz a tens\u00e3o interna, melhora a tenacidade, estabiliza a microestrutura e ajuda a controlar a austenita retida.<\/p>\n      <p>Normalmente, recomenda-se o revenimento duplo para o a\u00e7o D2. O revenimento triplo pode ser utilizado em ferramentas cr\u00edticas ou quando o controle da austenita retida for especialmente importante. A pe\u00e7a deve retornar \u00e0 temperatura ambiente entre os ciclos de revenimento.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead><tr><th>Estrat\u00e9gia de Temperagem<\/th><th>Temperatura t\u00edpica<\/th><th>Resultado esperado<\/th><th>Melhor utilizado quando<\/th><\/tr><\/thead>\n          <tbody>\n            <tr><td>Revenimento a baixa temperatura<\/td><td>Aproximadamente 400\u00b0F \/ 205\u00b0C<\/td><td>Cerca de 60 a 62 HRC<\/td><td>A dureza m\u00e1xima \u00e9 mais importante do que a estabilidade dimensional.<\/td><\/tr>\n            <tr><td>t\u00eampera dupla em alta temperatura<\/td><td>900\u2013960\u00b0F \/ 480\u2013515\u00b0C<\/td><td>Aproximadamente 58\u201360 HRC<\/td><td>A estabilidade dimensional, o al\u00edvio de tens\u00f5es e o controle da austenita retida s\u00e3o importantes.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>Para a maioria das ferramentas industriais de a\u00e7o D2, a t\u00eampera dupla em alta temperatura, entre 480 e 515 \u00b0C (900\u2013960 \u00b0F), proporciona um equil\u00edbrio mais seguro entre dureza, resist\u00eancia ao desgaste, estabilidade e resist\u00eancia a fissuras.<\/p>\n\n      <h2>Tabela de temperatura de revenido e dureza D2<\/h2>\n      <p>A dureza final depende da temperatura de austenitiza\u00e7\u00e3o, do m\u00e9todo de t\u00eampera, da temperatura de revenido, do n\u00famero de ciclos de revenido, da dimens\u00e3o da se\u00e7\u00e3o transversal e se foi utilizado tratamento criog\u00eanico.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead><tr><th>Temperatura de t\u00eampera<\/th><th>Condi\u00e7\u00e3o t\u00edpica<\/th><th>Dureza esperada<\/th><\/tr><\/thead>\n          <tbody>\n            <tr><td>Como extinto<\/td><td>Endurecimento padr\u00e3o<\/td><td>Aproximadamente 64 HRC<\/td><\/tr>\n            <tr><td>300\u00b0F \/ 150\u00b0C<\/td><td>Tempera de baixa temperatura<\/td><td>Aproximadamente 62 HRC<\/td><\/tr>\n            <tr><td>400\u00b0F \/ 205\u00b0C<\/td><td>Tempera de baixa temperatura<\/td><td>Aproximadamente 61 HRC<\/td><\/tr>\n            <tr><td>500\u00b0F \/ 260\u00b0C<\/td><td>Temperado<\/td><td>Cerca de 60 HRC<\/td><\/tr>\n            <tr><td>600\u00b0F \/ 315\u00b0C<\/td><td>Temperado<\/td><td>Cerca de 59 HRC<\/td><\/tr>\n            <tr><td>700\u00b0F \/ 370\u00b0C<\/td><td>Temperado<\/td><td>Aproximadamente 58 HRC<\/td><\/tr>\n            <tr><td>800\u00b0F \/ 425\u00b0C<\/td><td>Temperado<\/td><td>Aproximadamente 58 HRC<\/td><\/tr>\n            <tr><td>900\u00b0F \/ 480\u00b0C<\/td><td>Tempera de alta temperatura<\/td><td>Aproximadamente 58 HRC<\/td><\/tr>\n            <tr><td>960\u00b0F \/ 515\u00b0C<\/td><td>Tempera de alta temperatura<\/td><td>Cerca de 58 a 60 HRC, dependendo da pr\u00e1tica.<\/td><\/tr>\n            <tr><td>1000\u00b0F \/ 540\u00b0C<\/td><td>Tempera de alta temperatura<\/td><td>Aproximadamente 55 HRC<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>Este gr\u00e1fico \u00e9 apenas uma refer\u00eancia, n\u00e3o um resultado garantido. A dureza real depende do controle do forno, da taxa de resfriamento, da espessura da se\u00e7\u00e3o e da condi\u00e7\u00e3o original do material.<\/p>\n\n      <h2>Principais estrat\u00e9gias de t\u00eampera para o a\u00e7o ferramenta D2<\/h2>\n      <p>A temperatura de revenido deve ser selecionada de acordo com o risco de falha da ferramenta. Se o principal risco for o desgaste abrasivo e a ferramenta tiver carga de impacto limitada, o revenido a baixa temperatura pode ser usado para manter uma dureza mais elevada. Se os principais riscos forem trincas, altera\u00e7\u00f5es dimensionais, austenita retida ou desempenho inconsistente na produ\u00e7\u00e3o, o revenido duplo a alta temperatura geralmente \u00e9 mais seguro.<\/p>\n      <p>O revenido a baixa temperatura, em torno de 205 \u00b0C (400 \u00b0F), pode produzir uma dureza de aproximadamente 60\u201362 HRC. Isso \u00e9 \u00fatil quando se requer m\u00e1xima dureza e resist\u00eancia \u00e0 abras\u00e3o. A limita\u00e7\u00e3o \u00e9 que o controle da austenita retida e a estabilidade dimensional podem ser menores do que com o revenido duplo a alta temperatura.<\/p>\n      <p>O revenimento duplo em alta temperatura, entre 480 e 515 \u00b0C (900\u2013960 \u00b0F), normalmente resulta em uma dureza de 58\u201360 HRC. Embora a dureza possa ser menor, a ferramenta geralmente apresenta melhor al\u00edvio de tens\u00f5es, estabilidade e confiabilidade em servi\u00e7o. Para muitas matrizes, pun\u00e7\u00f5es, cortadores e ferramentas de precis\u00e3o para trabalho a frio, essa faixa de dureza de trabalho \u00e9 mais pr\u00e1tica do que buscar o valor de HRC mais alto poss\u00edvel.<\/p>\n      <p>Caso a ferramenta D2 venha a receber posteriormente nitreta\u00e7\u00e3o, revestimento PVD ou outro tratamento superficial de alta temperatura, a temperatura de revenido deve ser selecionada levando-se em considera\u00e7\u00e3o a temperatura do revestimento. O a\u00e7o do n\u00facleo deve normalmente ser revenido acima da temperatura do revestimento posterior para evitar perda inesperada de dureza.<\/p>\n\n      <h2>Dureza alvo para diferentes aplica\u00e7\u00f5es de ferramentas D2<\/h2>\n      <p>A dureza de trabalho pr\u00e1tica do a\u00e7o ferramenta D2 \u00e9 geralmente selecionada entre 56 HRC e 62 HRC. Uma dureza maior pode melhorar a resist\u00eancia ao desgaste, mas tamb\u00e9m aumenta o risco de lascamento e fissuras.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead><tr><th>Aplicativo<\/th><th>Dureza t\u00edpica do alvo<\/th><th>L\u00f3gica de Sele\u00e7\u00e3o<\/th><\/tr><\/thead>\n          <tbody>\n            <tr><td>Matrizes de corte de longo prazo<\/td><td>58\u201362 HRC<\/td><td>Equilibre o desgaste das bordas e o risco de rachaduras.<\/td><\/tr>\n            <tr><td>Pun\u00e7\u00f5es de bloqueio<\/td><td>58\u201362 HRC<\/td><td>Manter a resist\u00eancia ao desgaste e, ao mesmo tempo, reduzir o risco de quebra.<\/td><\/tr>\n            <tr><td>Matrizes de conforma\u00e7\u00e3o e dobra<\/td><td>58\u201360 HRC<\/td><td>Melhora a resist\u00eancia e reduz o lascamento.<\/td><\/tr>\n            <tr><td>Cortadores de fenda e l\u00e2minas de cisalhamento<\/td><td>58\u201361 HRC<\/td><td>Manter a reten\u00e7\u00e3o da aresta de corte sob abras\u00e3o.<\/td><\/tr>\n            <tr><td>Ferramentas de extrus\u00e3o a frio<\/td><td>58\u201362 HRC<\/td><td>Equilibrar resist\u00eancia \u00e0 compress\u00e3o, tenacidade e desgaste.<\/td><\/tr>\n            <tr><td>Medidores e ferramentas de medi\u00e7\u00e3o<\/td><td>58\u201360 HRC<\/td><td>Priorize a estabilidade dimensional e a resist\u00eancia ao desgaste.<\/td><\/tr>\n            <tr><td>Matrizes de lamina\u00e7\u00e3o de roscas<\/td><td>58\u201360 HRC<\/td><td>Manter a resist\u00eancia ao desgaste superficial e a resist\u00eancia \u00e0 compress\u00e3o.<\/td><\/tr>\n            <tr><td>Pequenos insertos abrasivos de pl\u00e1stico para moldes<\/td><td>58\u201360 HRC<\/td><td>Utilizar quando for necess\u00e1ria resist\u00eancia \u00e0 abras\u00e3o.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>Para ferramentas sens\u00edveis a impactos, a dureza m\u00e1xima nem sempre \u00e9 a melhor escolha. Uma dureza ligeiramente menor, com melhor tenacidade e estabilidade, pode proporcionar uma vida \u00fatil mais longa do que uma dureza maior, que acarreta o risco de fissuras.<\/p>\n\n      <h2>Tamanho da se\u00e7\u00e3o e risco de tratamento t\u00e9rmico<\/h2>\n      <p>A dimens\u00e3o da se\u00e7\u00e3o transversal afeta significativamente o tratamento t\u00e9rmico D2. Se\u00e7\u00f5es espessas aquecem e esfriam mais lentamente do que se\u00e7\u00f5es finas. Cantos vivos, furos cegos e mudan\u00e7as bruscas de espessura aumentam a distor\u00e7\u00e3o e o risco de fissuras.<\/p>\n      <p>Ferramentas grandes de D2 devem ser aquecidas lenta e uniformemente. Se a superf\u00edcie atingir a temperatura de endurecimento enquanto o n\u00facleo permanecer muito mais frio, a tens\u00e3o interna pode se tornar severa. \u00c9 por isso que o pr\u00e9-aquecimento \u00e9 especialmente importante para blocos grandes e ferramentas complexas.<\/p>\n      <p>Durante o processo de t\u00eampera, se\u00e7\u00f5es finas resfriam e se transformam mais rapidamente do que se\u00e7\u00f5es espessas. Essa transforma\u00e7\u00e3o desigual pode criar tens\u00f5es internas pr\u00f3ximas a cantos vivos e mudan\u00e7as abruptas na se\u00e7\u00e3o transversal. Um bom projeto de ferramenta deve minimizar cantos internos vivos e evitar varia\u00e7\u00f5es desnecess\u00e1rias na espessura.<\/p>\n      <p>Para se\u00e7\u00f5es muito grandes, o resfriamento a ar pode n\u00e3o resfriar o n\u00facleo com rapidez suficiente para atingir a dureza necess\u00e1ria. Um resfriamento mais agressivo pode ser necess\u00e1rio, mas uma t\u00eampera mais intensa tamb\u00e9m aumenta o risco de trincas. Portanto, ferramentas D2 de grandes dimens\u00f5es exigem ajustes no processo, em vez de um \u00fanico programa fixo de tratamento t\u00e9rmico.<\/p>\n      <p>O tempo de revenimento tamb\u00e9m depende da dimens\u00e3o da pe\u00e7a. Uma refer\u00eancia comum \u00e9 de pelo menos 2 horas por polegada (25 mm) de espessura, com resfriamento \u00e0 temperatura ambiente entre os ciclos de revenimento.<\/p>\n\n      <h2>Problemas comuns no tratamento t\u00e9rmico D2<\/h2>\n      <h3>1. Superaquecimento<\/h3>\n      <p>O superaquecimento ocorre quando o a\u00e7o D2 \u00e9 austenitizado acima da faixa recomendada ou mantido nessa condi\u00e7\u00e3o por tempo excessivo. Isso pode causar o crescimento de gr\u00e3os, excesso de austenita retida, fragilidade, baixa dureza e aumento do risco de fissuras.<\/p>\n      <p>A solu\u00e7\u00e3o \u00e9 controlar a temperatura de austenitiza\u00e7\u00e3o e o tempo de perman\u00eancia com base no tamanho da se\u00e7\u00e3o.<\/p>\n\n      <h3>2. Subaquecimento<\/h3>\n      <p>O subaquecimento ocorre quando a temperatura de austenitiza\u00e7\u00e3o \u00e9 muito baixa ou o tempo de perman\u00eancia nessa temperatura \u00e9 muito curto. Os carbonetos da liga podem n\u00e3o se dissolver completamente e o a\u00e7o pode n\u00e3o atingir a dureza esperada ap\u00f3s o resfriamento brusco.<\/p>\n      <p>Isso geralmente se manifesta como baixa dureza, fraca resist\u00eancia ao desgaste e desempenho ruim em servi\u00e7o.<\/p>\n\n      <h3>3. Descarboneta\u00e7\u00e3o superficial<\/h3>\n      <p>Se o a\u00e7o D2 for aquecido sem prote\u00e7\u00e3o, a superf\u00edcie pode perder carbono durante a austenitiza\u00e7\u00e3o. Uma superf\u00edcie descarbonetada pode permanecer macia ap\u00f3s o endurecimento, reduzindo a resist\u00eancia ao desgaste e aumentando o risco de distor\u00e7\u00e3o.<\/p>\n      <p>O tratamento t\u00e9rmico a v\u00e1cuo, o tratamento t\u00e9rmico em atmosfera controlada, o banho de sal neutro ou o envolvimento em folha de a\u00e7o inoxid\u00e1vel podem reduzir esse problema.<\/p>\n\n      <h3>4. T\u00eampera Retardada<\/h3>\n      <p>O a\u00e7o D2 deve ser revenido imediatamente ap\u00f3s a t\u00eampera, quando atingir uma temperatura de aproximadamente 50\u201366 \u00b0C (120\u2013150 \u00b0F). O a\u00e7o D2 rec\u00e9m-temperado cont\u00e9m martensita altamente tensionada e pode trincar se o revenido for atrasado.<\/p>\n      <p>Deixar o a\u00e7o D2 endurecido sem revenimento durante a noite \u00e9 arriscado, especialmente para ferramentas complexas e se\u00e7\u00f5es espessas.<\/p>\n\n      <h3>5. Temperatura de t\u00eampera inadequada<\/h3>\n      <p>O a\u00e7o D2 pode ser temperado a baixas temperaturas para obter alta dureza ou a temperaturas mais altas para maior estabilidade. A temperatura de t\u00eampera deve ser adequada \u00e0 aplica\u00e7\u00e3o.<\/p>\n      <p>Para muitas ferramentas industriais, a t\u00eampera dupla a 480\u2013515 \u00b0C (900\u2013960 \u00b0F) \u00e9 mais confi\u00e1vel do que uma \u00fanica t\u00eampera a baixa temperatura.<\/p>\n\n      <h3>6. Trincas por t\u00eampera induzidas pelo projeto<\/h3>\n      <p>Algumas ferramentas D2 trincam devido \u00e0 geometria, e n\u00e3o \u00e0 qualidade do a\u00e7o. Cantos internos vivos, marcas profundas, furos cegos, paredes finas adjacentes a se\u00e7\u00f5es espessas e mudan\u00e7as repentinas na se\u00e7\u00e3o transversal aumentam o risco de trincas.<\/p>\n      <p>Sempre que poss\u00edvel, os cantos vivos devem ser arredondados, as mudan\u00e7as de se\u00e7\u00e3o devem ser reduzidas e as ferramentas complexas devem ser projetadas levando em considera\u00e7\u00e3o o tratamento t\u00e9rmico.<\/p>\n\n      <h3>7. Danos por retifica\u00e7\u00e3o ap\u00f3s tratamento t\u00e9rmico<\/h3>\n      <p>O a\u00e7o D2 possui alta resist\u00eancia ao desgaste, portanto, o desbaste agressivo pode gerar calor localizado. Isso pode amolecer a superf\u00edcie, causar queimaduras por desbaste ou criar fissuras superficiais superficiais.<\/p>\n      <p>Ap\u00f3s o endurecimento, o a\u00e7o D2 deve ser retificado com passes leves, fluido de corte adequado e remo\u00e7\u00e3o controlada de material. Para ferramentas cr\u00edticas, pode-se considerar um tratamento t\u00e9rmico de al\u00edvio de tens\u00f5es a baixa temperatura ap\u00f3s a retifica\u00e7\u00e3o pesada.<\/p>\n\n      <div class=\"aobo-note-box\">\n        <p>A Aobo Steel fornece a\u00e7o ferramenta D2 \/ 1.2379 \/ SKD11 em condi\u00e7\u00e3o recozida e n\u00e3o oferece servi\u00e7os de tratamento t\u00e9rmico final, como t\u00eampera, revenimento, tratamento criog\u00eanico ou revenimento.<\/p>\n        <p>Os par\u00e2metros de tratamento t\u00e9rmico, os dados de dureza e as recomenda\u00e7\u00f5es de processo neste guia s\u00e3o fornecidos como refer\u00eancias gerais de suporte t\u00e9cnico para nossos clientes. Os resultados reais do tratamento t\u00e9rmico podem variar dependendo da capacidade do forno, do tamanho da se\u00e7\u00e3o transversal, da geometria da ferramenta, da condi\u00e7\u00e3o do material, das pr\u00e1ticas de t\u00eampera e do controle do processo. Os procedimentos finais de tratamento t\u00e9rmico e a valida\u00e7\u00e3o devem ser realizados pela unidade de tratamento t\u00e9rmico do cliente, de acordo com a aplica\u00e7\u00e3o espec\u00edfica da ferramenta e os requisitos de produ\u00e7\u00e3o.<\/p>\n      <\/div>\n\n      <section class=\"aobo-final-cta\">\n        <div>\n          <h2>Precisa de a\u00e7o ferramenta D2 recozido para projetos de tratamento t\u00e9rmico?<\/h2>\n          <p>A Aobo Steel fornece barras redondas e chapas D2 \/ 1.2379 \/ SKD11 com certificados de f\u00e1brica e inspe\u00e7\u00e3o dimensional antes do envio.<\/p>\n        <\/div>\n        <div class=\"aobo-supply-actions\">\n          <a class=\"aobo-btn aobo-btn-primary popmake-16052\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n          <a class=\"aobo-btn aobo-btn-secondary\" href=\"https:\/\/aobosteel.com\/pt\/d2-tool-steel\/\">Ver detalhes de fornecimento D2<\/a>\n        <\/div>\n      <\/section>\n    <\/main>\n  <\/div>\n<\/section>\n\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-1778199686229\"><strong class=\"schema-faq-question\">Qual \u00e9 o processo normal de tratamento t\u00e9rmico para o a\u00e7o ferramenta D2?<\/strong> <p class=\"schema-faq-answer\">O a\u00e7o ferramenta D2 \u00e9 normalmente tratado termicamente por pr\u00e9-aquecimento, austenitiza\u00e7\u00e3o, t\u00eampera e revenido. Um processo t\u00edpico \u00e9 o pr\u00e9-aquecimento at\u00e9 <strong>1200\u20131250\u00b0F \/ 649\u2013677\u00b0C<\/strong>, austenitizando em <strong>1795\u20131875\u00b0F \/ 980\u20131025\u00b0C<\/strong>, t\u00eampera por ar, g\u00e1s, \u00f3leo ou banho de sal, dependendo do tamanho da se\u00e7\u00e3o, e depois revenido duas vezes a <strong>900\u2013960\u00b0F \/ 480\u2013515\u00b0C<\/strong>. O tratamento criog\u00eanico pode ser adicionado quando a estabilidade dimensional e o controle da austenita retida s\u00e3o cr\u00edticos.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778199717481\"><strong class=\"schema-faq-question\">Qual a dureza que o a\u00e7o ferramenta D2 pode atingir ap\u00f3s o tratamento t\u00e9rmico?<\/strong> <p class=\"schema-faq-answer\">O a\u00e7o ferramenta D2 pode atingir cerca de <strong>64 HRC ap\u00f3s t\u00eampera<\/strong>. Ap\u00f3s o revenimento, a dureza final de trabalho depende da temperatura de revenimento. Um revenimento a baixa temperatura em torno de <strong>400\u00b0F \/ 205\u00b0C<\/strong> pode produzir cerca de <strong>61 HRC<\/strong>, enquanto a t\u00eampera dupla em alta temperatura em torno de <strong>900\u2013960\u00b0F \/ 480\u2013515\u00b0C<\/strong> geralmente d\u00e1 cerca de <strong>58\u201360 HRC<\/strong> com melhor estabilidade dimensional.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778199718291\"><strong class=\"schema-faq-question\">O a\u00e7o ferramenta D2 deve ser temperado ao ar ou em \u00f3leo?<\/strong> <p class=\"schema-faq-answer\">O a\u00e7o D2 \u00e9 um a\u00e7o ferramenta de t\u00eampera ao ar, portanto, o resfriamento controlado a ar ou a t\u00eampera a g\u00e1s s\u00e3o frequentemente preferidos para reduzir o risco de distor\u00e7\u00e3o e fissuras. A t\u00eampera em \u00f3leo pode ser usada em algumas se\u00e7\u00f5es maiores ou casos especiais, mas aumenta o choque t\u00e9rmico. O m\u00e9todo de t\u00eampera deve ser selecionado de acordo com o tamanho da se\u00e7\u00e3o, a geometria da ferramenta e a dureza necess\u00e1ria.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778199719081\"><strong class=\"schema-faq-question\">O tratamento criog\u00eanico \u00e9 necess\u00e1rio para o a\u00e7o ferramenta D2?<\/strong> <p class=\"schema-faq-answer\">O tratamento criog\u00eanico nem sempre \u00e9 necess\u00e1rio para o a\u00e7o ferramenta D2. Ele \u00e9 utilizado principalmente quando a ferramenta requer melhor estabilidade dimensional, menor teor de austenita retida e desempenho de desgaste mais consistente. Matrizes de precis\u00e3o, calibradores, pun\u00e7\u00f5es, ferramentas de corte e ferramentas de alto desgaste podem se beneficiar do tratamento criog\u00eanico. Ferramentas de uso geral podem apresentar bom desempenho apenas com um revenimento duplo adequado.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778199719852\"><strong class=\"schema-faq-question\">Quando o a\u00e7o ferramenta D2 deve ser revenido ap\u00f3s a t\u00eampera?<\/strong> <p class=\"schema-faq-answer\">O D2 deve ser revenido imediatamente ap\u00f3s a t\u00eampera, quando a pe\u00e7a esfriar at\u00e9 aproximadamente [temperatura em branco].\u00a0<strong>120\u2013150\u00b0F (50\u201366 \u00b0C)<\/strong>. O a\u00e7o D2 rec\u00e9m-temperado cont\u00e9m martensita altamente tensionada e pode trincar se o revenimento for atrasado. Deixar o a\u00e7o D2 endurecido sem revenimento durante a noite \u00e9 arriscado, especialmente para ferramentas complexas ou se\u00e7\u00f5es espessas.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778199763713\"><strong class=\"schema-faq-question\">Por que a t\u00eampera dupla \u00e9 recomendada para o a\u00e7o ferramenta D2?<\/strong> <p class=\"schema-faq-answer\">Recomenda-se o revenimento duplo porque o a\u00e7o D2 possui alto teor de liga e pode reter austenita ap\u00f3s o resfriamento brusco. O primeiro revenimento reduz a tens\u00e3o e inicia a estabiliza\u00e7\u00e3o da estrutura. O resfriamento at\u00e9 a temperatura ambiente permite transforma\u00e7\u00e3o adicional, e o segundo revenimento ajuda a estabilizar a martensita rec\u00e9m-formada. Isso melhora a estabilidade dimensional e reduz o risco de trincas.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778199764493\"><strong class=\"schema-faq-question\">Qual \u00e9 a melhor temperatura de revenimento para o a\u00e7o ferramenta D2?<\/strong> <p class=\"schema-faq-answer\">N\u00e3o existe uma temperatura de revenido ideal \u00fanica para todas as ferramentas de a\u00e7o D2. Se for necess\u00e1ria dureza m\u00e1xima, o a\u00e7o D2 pode ser revenido em torno de <strong>400\u00b0F \/ 205\u00b0C<\/strong>. Se a estabilidade dimensional, o controle da austenita retida e a confiabilidade em servi\u00e7o forem mais importantes, o revenido duplo em alta temperatura <strong>900\u2013960\u00b0F (480\u2013515\u00b0C)<\/strong> \u00e9 frequentemente preferido.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778199765365\"><strong class=\"schema-faq-question\">Por que o a\u00e7o ferramenta D2 trinca durante o tratamento t\u00e9rmico?<\/strong> <p class=\"schema-faq-answer\">O a\u00e7o D2 pode apresentar fissuras durante o tratamento t\u00e9rmico devido a taxas de aquecimento excessivas, pr\u00e9-aquecimento inadequado, cantos vivos, espessura irregular da se\u00e7\u00e3o transversal, t\u00eampera severa, revenimento tardio ou projeto inadequado da pe\u00e7a. O a\u00e7o D2 possui alta dureza e alto teor de liga, portanto, as tens\u00f5es durante o tratamento t\u00e9rmico devem ser cuidadosamente controladas.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778199800038\"><strong class=\"schema-faq-question\">Por que o a\u00e7o ferramenta D2 n\u00e3o atinge a dureza esperada?<\/strong> <p class=\"schema-faq-answer\">A baixa dureza pode ser causada por temperatura de austenitiza\u00e7\u00e3o insuficiente, tempo de perman\u00eancia curto, resfriamento lento em grandes se\u00e7\u00f5es, descarboneta\u00e7\u00e3o superficial ou revenimento inadequado. Toda a se\u00e7\u00e3o transversal deve atingir a temperatura de austenitiza\u00e7\u00e3o correta, e o processo de t\u00eampera e revenimento deve ser adequado ao tamanho da se\u00e7\u00e3o.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778199800773\"><strong class=\"schema-faq-question\">O tamanho da se\u00e7\u00e3o afeta o tratamento t\u00e9rmico D2?<\/strong> <p class=\"schema-faq-answer\">Sim. A dimens\u00e3o da se\u00e7\u00e3o transversal afeta significativamente o aquecimento, a perman\u00eancia na temperatura, a t\u00eampera e o revenimento. Se\u00e7\u00f5es espessas aquecem e resfriam mais lentamente do que se\u00e7\u00f5es finas. Pe\u00e7as grandes em a\u00e7o D2 podem necessitar de um tempo de equaliza\u00e7\u00e3o maior e de uma sele\u00e7\u00e3o cuidadosa do processo de t\u00eampera. Mudan\u00e7as bruscas de se\u00e7\u00e3o transversal, cantos vivos e furos cegos tamb\u00e9m aumentam o risco de distor\u00e7\u00e3o e fissuras.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778199818018\"><strong class=\"schema-faq-question\">O a\u00e7o ferramenta D2 pode ser tratado termicamente ap\u00f3s a usinagem?<\/strong> <p class=\"schema-faq-answer\">Sim, o a\u00e7o D2 \u00e9 geralmente usinado em desbaste ap\u00f3s recozimento e, em seguida, tratado termicamente. No entanto, usinagem pesada pode introduzir tens\u00f5es residuais, portanto, o al\u00edvio de tens\u00f5es antes da t\u00eampera pode ser considerado para pe\u00e7as grandes ou complexas. O retifica\u00e7\u00e3o final deve ser cuidadosamente controlada ap\u00f3s a t\u00eampera para evitar queimaduras de retifica\u00e7\u00e3o ou trincas superficiais.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778199818756\"><strong class=\"schema-faq-question\">A Aobo Steel oferece servi\u00e7o de tratamento t\u00e9rmico D2?<\/strong> <p class=\"schema-faq-answer\">N\u00e3o. A Aobo Steel fornece. <strong>A\u00e7o ferramenta D2 \/ 1.2379 \/ SKD11<\/strong> Em condi\u00e7\u00e3o recozida, principalmente em barras redondas e barras planas para grandes encomendas industriais. O endurecimento final, t\u00eampera, tratamento criog\u00eanico e revenimento devem ser realizados pela empresa de tratamento t\u00e9rmico local do cliente.<\/p> <\/div> <\/div>","protected":false},"excerpt":{"rendered":"<p>D2 Tool Steel Heat Treatment Guide D2 tool steel is usually heat-treated by preheating to 1200\u20131250\u00b0F \/ 649\u2013677\u00b0C, austenitizing at 1795\u20131875\u00b0F \/ 980\u20131025\u00b0C, quenching by air, gas, oil, or salt bath, depending on section size, and double tempering at 900\u2013960\u00b0F \/ 480\u2013515\u00b0C. In many cold-work tooling applications, this process produces a hardness of about 58\u201360 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15078,"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":"normal-width-container","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-11776","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.2 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>D2 Heat Treatment Guide: Tempering Chart, Hardness &amp; Process<\/title>\n<meta name=\"description\" content=\"See D2 heat treatment temperatures, quenching methods, tempering chart, cryogenic treatment, and final hardness range. 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A typical process is preheating to <strong>1200\u20131250\u00b0F \\\/ 649\u2013677\u00b0C<\\\/strong>, austenitizing at <strong>1795\u20131875\u00b0F \\\/ 980\u20131025\u00b0C<\\\/strong>, quenching by air, gas, oil, or salt bath depending on section size, and then double tempering at <strong>900\u2013960\u00b0F \\\/ 480\u2013515\u00b0C<\\\/strong>. Cryogenic treatment may be added when dimensional stability and control of retained austenite are critical.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199717481\",\"position\":2,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199717481\",\"name\":\"What hardness can D2 tool steel reach after heat treatment?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"D2 tool steel can reach about <strong>64 HRC as quenched<\\\/strong>. After tempering, the final working hardness depends on the tempering temperature. A low-temperature temper around <strong>400\u00b0F \\\/ 205\u00b0C<\\\/strong> can produce about <strong>61 HRC<\\\/strong>, while high-temperature double tempering around <strong>900\u2013960\u00b0F \\\/ 480\u2013515\u00b0C<\\\/strong> commonly gives about <strong>58\u201360 HRC<\\\/strong> with better dimensional stability.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199718291\",\"position\":3,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199718291\",\"name\":\"Should D2 tool steel be air-quenched or oil-quenched?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"D2 is an air-hardening tool steel, so controlled air cooling or gas quenching is often preferred to reduce the risk of distortion and cracking. Oil quenching may be used in some larger sections or special cases, but it increases thermal shock. The quenching method should be selected according to section size, tool geometry, and required hardness.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199719081\",\"position\":4,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199719081\",\"name\":\"Is cryogenic treatment necessary for D2 tool steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Cryogenic treatment is not always necessary for D2 tool steel. It is mainly used when the tool requires better dimensional stability, lower retained austenite, and more consistent wear performance. Precision dies, gauges, punches, slitting tools, and high-wear tooling may benefit from cryogenic treatment. General tooling may perform well with proper double tempering alone.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199719852\",\"position\":5,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199719852\",\"name\":\"When should D2 tool steel be tempered after quenching?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"D2 should be tempered immediately after quenching, when the part cools to approximately\u00a0<strong>120\u2013150\u00b0F (50\u201366 \u00b0C)<\\\/strong>. Freshly quenched D2 contains highly stressed martensite and can crack if tempering is delayed. Leaving hardened D2 untempered overnight is risky, especially for complex tools or heavy sections.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199763713\",\"position\":6,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199763713\",\"name\":\"Why is double tempering recommended for D2 tool steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Double tempering is recommended because D2 contains high alloy content and may retain austenite after quenching. The first temper reduces stress and begins stabilizing the structure. Cooling to room temperature allows additional transformation, and the second temper helps stabilize newly formed martensite. This improves dimensional stability and reduces the risk of cracking.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199764493\",\"position\":7,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199764493\",\"name\":\"What is the best tempering temperature for D2 tool steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"There is no single best tempering temperature for all D2 tools. If maximum hardness is required, D2 may be tempered around <strong>400\u00b0F \\\/ 205\u00b0C<\\\/strong>. If dimensional stability, retained austenite control, and service reliability are more important, high-temperature double tempering at <strong>900\u2013960\u00b0F (480\u2013515\u00b0C)<\\\/strong> is often preferred.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199765365\",\"position\":8,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199765365\",\"name\":\"Why does D2 tool steel crack during heat treatment?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"D2 may crack during heat treatment due to excessive heating rate, inadequate preheating, sharp corners, uneven section thickness, severe quenching, delayed tempering, or improper part design. D2 has high hardness and high alloy content, so heat-treatment stresses must be carefully controlled.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199800038\",\"position\":9,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199800038\",\"name\":\"Why does D2 tool steel fail to reach the expected hardness?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Low hardness may come from insufficient austenitizing temperature, short soaking time, slow cooling in large sections, surface decarburization, or improper tempering. The full cross-section must reach the correct austenitizing temperature, and the quenching and tempering process must be matched to the section size.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199800773\",\"position\":10,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199800773\",\"name\":\"Does section size affect D2 heat treatment?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Section size strongly affects heating, soaking, quenching, and tempering. Thick sections heat and cool more slowly than thin sections. Large D2 parts may need longer equalizing time and careful quench selection. Sudden section changes, sharp corners, and blind holes also increase the risk of distortion and cracking.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199818018\",\"position\":11,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199818018\",\"name\":\"Can D2 tool steel be heat-treated after machining?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, D2 is commonly rough machined in an annealed condition and then heat-treated. However, heavy machining can introduce stress, so stress relief before hardening may be considered for large or complex parts. Final grinding should be controlled carefully after hardening to avoid grinding burns or surface cracks.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199818756\",\"position\":12,\"url\":\"https:\\\/\\\/aobosteel.com\\\/d2-tool-steel-heat-treatment-guide\\\/#faq-question-1778199818756\",\"name\":\"Does Aobo Steel provide D2 heat treatment service?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Aobo Steel supplies <strong>D2 \\\/ 1.2379 \\\/ SKD11 tool steel<\\\/strong> in an annealed condition, mainly as round bar and flat bar for bulk industrial orders. Final hardening, quenching, cryogenic treatment, and tempering should be performed by the customer\u2019s local heat-treatment facility.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Guia de Tratamento T\u00e9rmico D2: Tabela de Revenimento, Dureza e Processo","description":"Consulte as temperaturas de tratamento t\u00e9rmico do a\u00e7o D2, os m\u00e9todos de t\u00eampera, a tabela de revenimento, o tratamento criog\u00eanico e a faixa de dureza final. A Aobo Steel fornece orienta\u00e7\u00f5es pr\u00e1ticas de processo para o a\u00e7o D2 \/ 1.2379 \/ SKD11.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/aobosteel.com\/pt\/d2-tool-steel-heat-treatment-guide\/","og_locale":"pt_BR","og_type":"article","og_title":"D2 Heat Treatment Guide: Tempering Chart, Hardness &amp; Process","og_description":"See D2 heat treatment temperatures, quenching methods, tempering chart, cryogenic treatment, and final hardness range. 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A typical process is preheating to <strong>1200\u20131250\u00b0F \/ 649\u2013677\u00b0C<\/strong>, austenitizing at <strong>1795\u20131875\u00b0F \/ 980\u20131025\u00b0C<\/strong>, quenching by air, gas, oil, or salt bath depending on section size, and then double tempering at <strong>900\u2013960\u00b0F \/ 480\u2013515\u00b0C<\/strong>. Cryogenic treatment may be added when dimensional stability and control of retained austenite are critical.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199717481","position":2,"url":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199717481","name":"Qual a dureza que o a\u00e7o ferramenta D2 pode atingir ap\u00f3s o tratamento t\u00e9rmico?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"D2 tool steel can reach about <strong>64 HRC as quenched<\/strong>. After tempering, the final working hardness depends on the tempering temperature. A low-temperature temper around <strong>400\u00b0F \/ 205\u00b0C<\/strong> can produce about <strong>61 HRC<\/strong>, while high-temperature double tempering around <strong>900\u2013960\u00b0F \/ 480\u2013515\u00b0C<\/strong> commonly gives about <strong>58\u201360 HRC<\/strong> with better dimensional stability.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199718291","position":3,"url":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199718291","name":"O a\u00e7o ferramenta D2 deve ser temperado ao ar ou em \u00f3leo?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"D2 is an air-hardening tool steel, so controlled air cooling or gas quenching is often preferred to reduce the risk of distortion and cracking. Oil quenching may be used in some larger sections or special cases, but it increases thermal shock. The quenching method should be selected according to section size, tool geometry, and required hardness.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199719081","position":4,"url":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199719081","name":"O tratamento criog\u00eanico \u00e9 necess\u00e1rio para o a\u00e7o ferramenta D2?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Cryogenic treatment is not always necessary for D2 tool steel. It is mainly used when the tool requires better dimensional stability, lower retained austenite, and more consistent wear performance. Precision dies, gauges, punches, slitting tools, and high-wear tooling may benefit from cryogenic treatment. General tooling may perform well with proper double tempering alone.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199719852","position":5,"url":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199719852","name":"Quando o a\u00e7o ferramenta D2 deve ser revenido ap\u00f3s a t\u00eampera?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"D2 should be tempered immediately after quenching, when the part cools to approximately\u00a0<strong>120\u2013150\u00b0F (50\u201366 \u00b0C)<\/strong>. Freshly quenched D2 contains highly stressed martensite and can crack if tempering is delayed. Leaving hardened D2 untempered overnight is risky, especially for complex tools or heavy sections.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199763713","position":6,"url":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199763713","name":"Por que a t\u00eampera dupla \u00e9 recomendada para o a\u00e7o ferramenta D2?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Double tempering is recommended because D2 contains high alloy content and may retain austenite after quenching. The first temper reduces stress and begins stabilizing the structure. Cooling to room temperature allows additional transformation, and the second temper helps stabilize newly formed martensite. This improves dimensional stability and reduces the risk of cracking.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199764493","position":7,"url":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199764493","name":"Qual \u00e9 a melhor temperatura de revenimento para o a\u00e7o ferramenta D2?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"There is no single best tempering temperature for all D2 tools. If maximum hardness is required, D2 may be tempered around <strong>400\u00b0F \/ 205\u00b0C<\/strong>. If dimensional stability, retained austenite control, and service reliability are more important, high-temperature double tempering at <strong>900\u2013960\u00b0F (480\u2013515\u00b0C)<\/strong> is often preferred.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199765365","position":8,"url":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199765365","name":"Por que o a\u00e7o ferramenta D2 trinca durante o tratamento t\u00e9rmico?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"D2 may crack during heat treatment due to excessive heating rate, inadequate preheating, sharp corners, uneven section thickness, severe quenching, delayed tempering, or improper part design. D2 has high hardness and high alloy content, so heat-treatment stresses must be carefully controlled.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199800038","position":9,"url":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199800038","name":"Por que o a\u00e7o ferramenta D2 n\u00e3o atinge a dureza esperada?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Low hardness may come from insufficient austenitizing temperature, short soaking time, slow cooling in large sections, surface decarburization, or improper tempering. The full cross-section must reach the correct austenitizing temperature, and the quenching and tempering process must be matched to the section size.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199800773","position":10,"url":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199800773","name":"O tamanho da se\u00e7\u00e3o afeta o tratamento t\u00e9rmico D2?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes. Section size strongly affects heating, soaking, quenching, and tempering. Thick sections heat and cool more slowly than thin sections. Large D2 parts may need longer equalizing time and careful quench selection. Sudden section changes, sharp corners, and blind holes also increase the risk of distortion and cracking.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199818018","position":11,"url":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199818018","name":"O a\u00e7o ferramenta D2 pode ser tratado termicamente ap\u00f3s a usinagem?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, D2 is commonly rough machined in an annealed condition and then heat-treated. However, heavy machining can introduce stress, so stress relief before hardening may be considered for large or complex parts. Final grinding should be controlled carefully after hardening to avoid grinding burns or surface cracks.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199818756","position":12,"url":"https:\/\/aobosteel.com\/d2-tool-steel-heat-treatment-guide\/#faq-question-1778199818756","name":"A Aobo Steel oferece servi\u00e7o de tratamento t\u00e9rmico D2?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"No. Aobo Steel supplies <strong>D2 \/ 1.2379 \/ SKD11 tool steel<\/strong> in an annealed condition, mainly as round bar and flat bar for bulk industrial orders. Final hardening, quenching, cryogenic treatment, and tempering should be performed by the customer\u2019s local heat-treatment facility.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"}]}},"uagb_featured_image_src":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad.avif",1254,1254,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad-300x300.avif",300,300,true],"medium_large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad-768x768.avif",768,768,true],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad-1024x1024.avif",1024,1024,true],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad.avif",1254,1254,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad.avif",1254,1254,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad-12x12.avif",12,12,true]},"uagb_author_info":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/pt\/blog\/author\/admin\/"},"uagb_comment_info":0,"uagb_excerpt":"D2 Tool Steel Heat Treatment Guide D2 tool steel is usually heat-treated by preheating to 1200\u20131250\u00b0F \/ 649\u2013677\u00b0C, austenitizing at 1795\u20131875\u00b0F \/ 980\u20131025\u00b0C, quenching by air, gas, oil, or salt bath, depending on section size, and double tempering at 900\u2013960\u00b0F \/ 480\u2013515\u00b0C. In many cold-work tooling applications, this process produces a hardness of about 58\u201360&hellip;","rttpg_featured_image_url":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad.avif",1254,1254,false],"landscape":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad.avif",1254,1254,false],"portraits":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad.avif",1254,1254,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad-300x300.avif",300,300,true],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad-1024x1024.avif",1024,1024,true],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad.avif",1254,1254,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad.avif",1254,1254,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/D2-heat-treatment-ad-12x12.avif",12,12,true]},"rttpg_author":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/pt\/blog\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"D2 Tool Steel Heat Treatment Guide D2 tool steel is usually heat-treated by preheating to 1200\u20131250\u00b0F \/ 649\u2013677\u00b0C, austenitizing at 1795\u20131875\u00b0F \/ 980\u20131025\u00b0C, quenching by air, gas, oil, or salt bath, depending on section size, and double tempering at 900\u2013960\u00b0F \/ 480\u2013515\u00b0C. In many cold-work tooling applications, this process produces a hardness of about 58\u201360&hellip;","_links":{"self":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/11776","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=11776"}],"version-history":[{"count":0,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/11776\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/media\/15078"}],"wp:attachment":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/media?parent=11776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}