{"id":15314,"date":"2026-05-14T08:48:04","date_gmt":"2026-05-14T00:48:04","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=15314"},"modified":"2026-06-25T15:17:11","modified_gmt":"2026-06-25T07:17:11","slug":"o1-steel-hardness","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/o1-steel-hardness\/","title":{"rendered":"Dureza do a\u00e7o O1: Guia HRC para recozimento, t\u00eampera e revenido"},"content":{"rendered":"<section class=\"aobo-o1-hardness-page\">\n  <style>\n    .aobo-o1-hardness-page {\n      --aobo-blue: #0c56d0;\n      --aobo-blue-dark: #073b8e;\n      --aobo-blue-soft: #eaf2ff;\n      --aobo-border: #d7e5fb;\n      --aobo-text: #203044;\n      --aobo-muted: #617087;\n      --aobo-orange: #f59b23;\n      --aobo-white: #ffffff;\n      --aobo-shadow: 0 18px 45px rgba(12, 86, 208, 0.10);\n      --aobo-page-width: 1180px;\n      font-family: inherit;\n      color: var(--aobo-text);\n      line-height: 1.7;\n      background: transparent;\n      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  .aobo-cta {\n        padding: 26px 22px;\n        border-radius: 22px;\n      }\n    }\n  <\/style>\n\n  <div class=\"aobo-wrap\">\n    <header class=\"aobo-hero\">\n      <h1>Dureza do a\u00e7o O1: Faixa HRC ap\u00f3s recozimento, t\u00eampera e revenido<\/h1>\n      <p>O a\u00e7o ferramenta O1 \u00e9 geralmente fornecido no estado recozido, com uma dureza que normalmente n\u00e3o ultrapassa cerca de 217 HBW. Ap\u00f3s t\u00eampera em \u00f3leo, o O1 pode atingir cerca de 64\u201365 HRC no estado temperado. Para uso pr\u00e1tico, o a\u00e7o O1 \u00e9 temperado e revenido. Sua dureza t\u00edpica \u00e9 de cerca de 58\u201360 HRC, com uma faixa pr\u00e1tica mais ampla de 56\u201362 HRC.<\/p>\n    <\/header>\n\n    <section class=\"aobo-supply-block\">\n      <div class=\"aobo-supply-image\">\n        <img decoding=\"async\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/o1-steel.avif\" alt=\"Barra de a\u00e7o ferramenta O1\" loading=\"lazy\">\n      <\/div>\n      <div class=\"aobo-supply-content\">\n        <p>A Aobo Steel fornece barras redondas e barras chatas de a\u00e7o ferramenta O1 \/ 1.2510 \/ SKS3, recozidas, para grandes encomendas industriais. Envie-nos as dimens\u00f5es, a quantidade, a toler\u00e2ncia e a aplica\u00e7\u00e3o desejadas.<\/p>\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\/o1-tool-steel\/\">Veja O1 A\u00e7o Ferramenta<\/a>\n        <\/div>\n      <\/div>\n    <\/section>\n\n    <main class=\"aobo-article\">\n      <h2>Dados r\u00e1pidos sobre a dureza do a\u00e7o O1<\/h2>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>Condi\u00e7\u00e3o<\/th><th>Dureza t\u00edpica<\/th><th>Significado pr\u00e1tico<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>Condi\u00e7\u00e3o de recozimento<\/td><td>\u2264 217 HBW<\/td><td>Condi\u00e7\u00e3o de fornecimento para usinagem antes do endurecimento<\/td><\/tr>\n            <tr><td>Ap\u00f3s t\u00eampera em \u00f3leo.<\/td><td>cerca de 64\u201365 HRC<\/td><td>Dureza m\u00e1xima antes do revenimento, n\u00e3o adequado para uso direto.<\/td><\/tr>\n            <tr><td>Dureza de trabalho comum ap\u00f3s revenimento<\/td><td>58\u201360 HRC<\/td><td>Gama padr\u00e3o para muitas ferramentas de trabalho a frio O1<\/td><\/tr>\n            <tr><td>Gama pr\u00e1tica refor\u00e7ada<\/td><td>56\u201362 HRC<\/td><td>Selecionados de acordo com o desgaste, impacto, tamanho da se\u00e7\u00e3o e projeto da ferramenta.<\/td><\/tr>\n            <tr><td>Gama de ferramentas de maior dureza<\/td><td>60\u201362 HRC<\/td><td>Utilizado em situa\u00e7\u00f5es onde a reten\u00e7\u00e3o de fio e a resist\u00eancia ao desgaste s\u00e3o mais importantes.<\/td><\/tr>\n            <tr><td>Faixa de ferramentas de menor dureza<\/td><td>56\u201358 HRC<\/td><td>Utilizado onde a resist\u00eancia e a durabilidade s\u00e3o mais importantes.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <h2>Dureza do a\u00e7o O1 por aplica\u00e7\u00e3o<\/h2>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>Aplicativo<\/th><th>Dureza recomendada<\/th><th>Raz\u00e3o de Engenharia<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>Matrizes e pun\u00e7\u00f5es de corte<\/td><td>58\u201360 HRC<\/td><td>Boa reten\u00e7\u00e3o de fio com menor risco de lascamento<\/td><\/tr>\n            <tr><td>Pun\u00e7\u00f5es de corte<\/td><td>58\u201360 HRC<\/td><td>Desempenho de corte est\u00e1vel em uso geral em trabalhos a frio.<\/td><\/tr>\n            <tr><td>Contra-pun\u00e7\u00f5es e ejetores<\/td><td>60\u201362 HRC<\/td><td>Maior dureza para press\u00e3o superficial e desgaste.<\/td><\/tr>\n            <tr><td>Matrizes de dobra<\/td><td>58\u201360 HRC<\/td><td>Equil\u00edbrio entre dureza, press\u00e3o de conforma\u00e7\u00e3o e tenacidade.<\/td><\/tr>\n            <tr><td>Desenho morre<\/td><td>58\u201362 HRC<\/td><td>Selecionado de acordo com o desgaste por deslizamento e o suporte da ferramenta.<\/td><\/tr>\n            <tr><td>Pun\u00e7\u00f5es de extrus\u00e3o a frio para frente<\/td><td>60\u201362 HRC<\/td><td>Maior dureza para resist\u00eancia \u00e0 compress\u00e3o e ao desgaste.<\/td><\/tr>\n            <tr><td>Hastes de pun\u00e7\u00e3o e mandris<\/td><td>56\u201358 HRC<\/td><td>Uma dureza menor melhora a resist\u00eancia sob carga.<\/td><\/tr>\n            <tr><td>L\u00e2minas de corte para conforma\u00e7\u00e3o a frio<\/td><td>60\u201364 HRC<\/td><td>Uma maior dureza melhora a reten\u00e7\u00e3o do fio de corte quando o impacto \u00e9 controlado.<\/td><\/tr>\n            <tr><td>Matrizes de relevo<\/td><td>58\u201361 HRC<\/td><td>Equilibra a defini\u00e7\u00e3o da superf\u00edcie, a resist\u00eancia ao desgaste e a resist\u00eancia a fissuras.<\/td><\/tr>\n            <tr><td>Matrizes de cunhagem<\/td><td>58\u201360 HRC<\/td><td>Equil\u00edbrio pr\u00e1tico entre dureza e resist\u00eancia \u00e0 fratura<\/td><\/tr>\n            <tr><td>P\u00e3ezinhos frios pequenos<\/td><td>60\u201362 HRC<\/td><td>Adequado para aplica\u00e7\u00f5es em que a se\u00e7\u00e3o possa ser endurecida eficazmente em \u00f3leo.<\/td><\/tr>\n            <tr><td>Calibradores e instrumentos de medi\u00e7\u00e3o de precis\u00e3o<\/td><td>58\u201362 HRC<\/td><td>Alta dureza com bom controle dimensional<\/td><\/tr>\n            <tr><td>Componentes deslizantes, buchas, cames<\/td><td>50\u201358 HRC<\/td><td>Depende dos requisitos de carga, desgaste e resist\u00eancia.<\/td><\/tr>\n            <tr><td>Placas de press\u00e3o que requerem resist\u00eancia de aproximadamente 1700 MPa<\/td><td>58\u201361 HRC<\/td><td>Alta resist\u00eancia e resist\u00eancia superficial<\/td><\/tr>\n            <tr><td>Placas de press\u00e3o que requerem resist\u00eancia de aproximadamente 1400 MPa<\/td><td>50\u201354 HRC<\/td><td>Menor dureza para melhor absor\u00e7\u00e3o de carga<\/td><\/tr>\n            <tr><td>Placas de press\u00e3o que requerem resist\u00eancia de aproximadamente 1100 MPa<\/td><td>40\u201344 HRC<\/td><td>Utilizado em situa\u00e7\u00f5es onde a resist\u00eancia \u00e9 mais importante do que a dureza de corte.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>Para aplica\u00e7\u00f5es de trabalho a frio com condi\u00e7\u00f5es incertas, uma dureza de 58\u201360 HRC costuma ser o ponto de partida mais pr\u00e1tico. Durezas acima de 62 HRC devem ser usadas com cautela, pois a dureza O1 torna-se mais propensa a lascas e fissuras.<\/p>\n\n      <h2>Tabela de dureza de revenido do a\u00e7o O1<\/h2>\n      <p>Ap\u00f3s a t\u00eampera em \u00f3leo, o a\u00e7o O1 deve ser revenido para reduzir a tens\u00e3o interna e ajustar a dureza final. O a\u00e7o O1 n\u00e3o apresenta o mesmo comportamento de endurecimento secund\u00e1rio que o a\u00e7o D2. \u00c0 medida que a temperatura de revenido aumenta, o a\u00e7o O1 geralmente amolece.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>Temperatura de t\u00eampera<\/th><th>Dureza aproximada<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>Como extinto<\/td><td>64\u201365 HRC<\/td><\/tr>\n            <tr><td>300\u00b0F \/ 150\u00b0C<\/td><td>cerca de 63 HRC<\/td><\/tr>\n            <tr><td>350\u00b0F \/ 177\u00b0C<\/td><td>62\u201363 HRC<\/td><\/tr>\n            <tr><td>400\u00b0F \/ 204\u00b0C<\/td><td>cerca de 62 HRC<\/td><\/tr>\n            <tr><td>500\u00b0F \/ 260\u00b0C<\/td><td>cerca de 60 HRC<\/td><\/tr>\n            <tr><td>600\u00b0F \/ 316\u00b0C<\/td><td>cerca de 57 HRC<\/td><\/tr>\n            <tr><td>700\u00b0F \/ 371\u00b0C<\/td><td>cerca de 53 HRC<\/td><\/tr>\n            <tr><td>800\u00b0F \/ 427\u00b0C<\/td><td>cerca de 50 HRC<\/td><\/tr>\n            <tr><td>900\u00b0F \/ 482\u00b0C<\/td><td>cerca de 47 HRC<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <div class=\"aobo-note\">Esses valores s\u00e3o refer\u00eancias t\u00edpicas. A dureza real pode variar com a temperatura de austenitiza\u00e7\u00e3o, o tempo de perman\u00eancia na temperatura, a velocidade de t\u00eampera em \u00f3leo, o tamanho da se\u00e7\u00e3o transversal, o tempo de revenido e a posi\u00e7\u00e3o do teste.<\/div>\n      <p>Para a maioria das ferramentas de a\u00e7o O1, a faixa de revenimento comum \u00e9 de aproximadamente 150\u2013260 \u00b0C (300\u2013500 \u00b0F). Essa faixa mant\u00e9m o a\u00e7o O1 em uma condi\u00e7\u00e3o de alta dureza, ideal para ferramentas de trabalho a frio. Temperaturas de revenimento mais elevadas melhoram a tenacidade, mas reduzem a dureza e a resist\u00eancia ao desgaste. Para informa\u00e7\u00f5es detalhadas, consulte [refer\u00eancia]. <a href=\"https:\/\/aobosteel.com\/pt\/o1-tool-steel-heat-treatment\/\">Como realizar tratamento t\u00e9rmico em a\u00e7o ferramenta O1<\/a>.<\/p>\n\n      <h2>Dureza do a\u00e7o O1 ap\u00f3s recozimento e comportamento de usinagem<\/h2>\n      <p>O a\u00e7o O1 \u00e9 normalmente fornecido na condi\u00e7\u00e3o recozida, com dureza tipicamente n\u00e3o superior a cerca de 217 HBW. Essa condi\u00e7\u00e3o \u00e9 utilizada para usinagem, fura\u00e7\u00e3o, fresagem, torneamento e retifica\u00e7\u00e3o, antes da t\u00eampera.<\/p>\n      <p>Comparado ao D2, o O1 \u00e9 mais f\u00e1cil de usinar por ter uma fra\u00e7\u00e3o volum\u00e9trica menor de carboneto de liga. Essa \u00e9 uma das raz\u00f5es pelas quais o O1 \u00e9 amplamente utilizado em ferramentas de uso geral, calibradores, dispositivos de fixa\u00e7\u00e3o, pun\u00e7\u00f5es e matrizes menores.<\/p>\n      <p>A usinagem principal deve ser conclu\u00edda antes do endurecimento. Ap\u00f3s o endurecimento do a\u00e7o O1, a usinagem convencional torna-se dif\u00edcil e o acabamento geralmente se limita a retifica\u00e7\u00e3o, polimento, eletroeros\u00e3o ou outras opera\u00e7\u00f5es p\u00f3s-endurecimento.<\/p>\n\n      <h2>Riscos de falha relacionados \u00e0 dureza do a\u00e7o O1<\/h2>\n      <p>A falha do tipo O1 est\u00e1 frequentemente relacionada \u00e0 dureza excessiva, ao controle inadequado do tratamento t\u00e9rmico, \u00e0 concentra\u00e7\u00e3o de tens\u00f5es ou a danos superficiais ap\u00f3s o endurecimento.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>Risco de falha<\/th><th>Causa comum<\/th><th>Resultado pr\u00e1tico<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>lascas nas bordas<\/td><td>Dureza excessiva, carga de impacto, suporte inadequado.<\/td><td>A l\u00e2mina de corte quebra antes do desgaste normal.<\/td><\/tr>\n            <tr><td>Rachaduras por t\u00eampera<\/td><td>Cantos vivos, espessura de se\u00e7\u00e3o irregular, t\u00eampera retardada.<\/td><td>A ferramenta apresenta rachaduras antes ou logo ap\u00f3s a manuten\u00e7\u00e3o.<\/td><\/tr>\n            <tr><td>Fratura fr\u00e1gil<\/td><td>Alta dureza combinada com choque ou tens\u00e3o de flex\u00e3o<\/td><td>Falha repentina da ferramenta<\/td><\/tr>\n            <tr><td>Mudan\u00e7a dimensional<\/td><td>Estrutura inst\u00e1vel ou controle inadequado do tratamento t\u00e9rmico<\/td><td>As dimens\u00f5es da ferramenta se alteram ap\u00f3s o endurecimento ou durante o uso.<\/td><\/tr>\n            <tr><td>Rachaduras de moagem<\/td><td>Superaquecimento durante a retifica\u00e7\u00e3o em O1 endurecido<\/td><td>Microfissuras se propagam sob carga de trabalho.<\/td><\/tr>\n            <tr><td>Pontos fracos<\/td><td>Endurecimento irregular ou calor de revenimento excessivo<\/td><td>Desgaste ou deforma\u00e7\u00e3o local<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>Para reduzir esses riscos, as ferramentas O1 devem ter transi\u00e7\u00f5es suaves, raios adequados, tratamento t\u00e9rmico controlado, revenimento imediato ap\u00f3s a t\u00eampera e retifica\u00e7\u00e3o cuidadosa ap\u00f3s o endurecimento.<\/p>\n\n      <h2>Compara\u00e7\u00e3o de dureza O1 vs A2 vs D2<\/h2>\n      <p>Os a\u00e7os O1, A2 e D2 podem operar em faixas de dureza Rockwell C semelhantes, mas seu desempenho \u00e9 diferente. A dureza por si s\u00f3 n\u00e3o explica a vida \u00fatil da ferramenta. As diferen\u00e7as entre eles residem na temperabilidade, no volume de carbonetos, na resist\u00eancia ao desgaste, na tenacidade e na usinabilidade.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>Grau de a\u00e7o<\/th><th>Dureza de trabalho comum<\/th><th>Tipo de endurecimento<\/th><th>Resist\u00eancia ao desgaste<\/th><th>Robustez<\/th><th>Usinabilidade<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>O1<\/td><td>58\u201360 HRC<\/td><td>Endurecimento por \u00f3leo<\/td><td>Bom<\/td><td>Bom para uso geral em trabalhos a frio.<\/td><td>Bom<\/td><\/tr>\n            <tr><td>A2<\/td><td>57\u201360 HRC<\/td><td>Endurecimento ao ar<\/td><td>Superior a O1<\/td><td>Melhor equil\u00edbrio que o D2<\/td><td>Moderado<\/td><\/tr>\n            <tr><td>D2<\/td><td>58\u201360 HRC<\/td><td>Endurecimento ao ar<\/td><td>Muito alto<\/td><td>Inferior<\/td><td>Pobre<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>O a\u00e7o O1 \u00e9 geralmente escolhido quando a usinabilidade, o tratamento t\u00e9rmico simples e o desempenho geral em trabalhos a frio s\u00e3o importantes. \u00c9 adequado para ferramentas de pequeno e m\u00e9dio porte, onde a t\u00eampera em \u00f3leo pode fornecer dureza suficiente.<\/p>\n      <p>A liga A2 \u00e9 mais adequada quando se necessita de estabilidade dimensional, maior temperabilidade e melhor resist\u00eancia a lascamento. A liga D2 \u00e9 mais indicada quando a principal exig\u00eancia \u00e9 a resist\u00eancia ao desgaste abrasivo, por\u00e9m \u00e9 mais dif\u00edcil de usinar e menos tolerante a impactos.<\/p>\n      <p>A sele\u00e7\u00e3o n\u00e3o deve ser baseada apenas na dureza Rockwell C (HRC). Os a\u00e7os O1, A2 e D2 podem ser usados com dureza em torno de 58\u201360 HRC, mas seu desempenho ser\u00e1 diferente sob condi\u00e7\u00f5es de desgaste, impacto, deslizamento e fissura\u00e7\u00e3o.<\/p>\n    <\/main>\n\n    <section class=\"aobo-cta\">\n      <div>\n        <h2>Solicite um or\u00e7amento para a\u00e7o O1 recozido.<\/h2>\n        <p>A Aobo Steel fornece a\u00e7o ferramenta O1 recozido para usinagem e posterior tratamento t\u00e9rmico. Para informa\u00e7\u00f5es sobre tamanhos dispon\u00edveis, condi\u00e7\u00f5es de fornecimento e detalhes de pedidos em grande quantidade, visite nossa p\u00e1gina de produtos de a\u00e7o ferramenta O1.<\/p>\n      <\/div>\n      <div class=\"aobo-cta-actions\">\n        <a class=\"aobo-btn aobo-btn-primary popmake-16052\" href=\"javascript:void(0);\">Solicite um or\u00e7amento para a\u00e7o O1 recozido.<\/a>\n        <a class=\"aobo-btn aobo-btn-secondary\" href=\"https:\/\/aobosteel.com\/pt\/o1-tool-steel\/\">P\u00e1gina do produto em a\u00e7o ferramenta O1<\/a>\n      <\/div>\n    <\/section>\n  <\/div>\n<\/section>\n\n\n\n<ul class=\"wp-block-yoast-seo-related-links yoast-seo-related-links\">\n<li><a href=\"https:\/\/aobosteel.com\/pt\/o1-tool-steel\/\">A\u00e7o para ferramentas O1 | 1.2510 | SKS3<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/pt\/h13-steel-heat-treatment\/\">Guia de Tratamento T\u00e9rmico H13 | Aobo Steel<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/pt\/h13-steel-hardness\/\">Dureza do a\u00e7o H13: Faixa HRC, tabela de revenimento e aplica\u00e7\u00f5es<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/pt\/420-stainless-steel-heat-treatment\/\">Guia de Tratamento T\u00e9rmico do A\u00e7o 420 | Endurecimento, T\u00eampera e Revenimento<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/pt\/s7-tool-steel-rockwell-hardness-chart\/\">Tabela de dureza Rockwell do a\u00e7o ferramenta S7 | HRC, HB e faixa de trabalho<\/a><\/li>\n<\/ul>\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-1778719081160\"><strong class=\"schema-faq-question\">Qual \u00e9 a dureza t\u00edpica do a\u00e7o O1 recozido?<\/strong> <p class=\"schema-faq-answer\">O a\u00e7o O1 recozido \u00e9 geralmente fornecido a um pre\u00e7o n\u00e3o superior a cerca de <strong>217 HBW<\/strong>. Esta \u00e9 a condi\u00e7\u00e3o macia utilizada para usinagem antes do endurecimento.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778719105773\"><strong class=\"schema-faq-question\">Qual a dureza m\u00e1xima que o a\u00e7o O1 pode atingir ap\u00f3s o resfriamento r\u00e1pido?<\/strong> <p class=\"schema-faq-answer\">Ap\u00f3s t\u00eampera adequada em \u00f3leo, o a\u00e7o O1 pode atingir cerca de <strong>64\u201365 HRC<\/strong> no estado em que foi temperado. No entanto, deve ser revenido antes de ser utilizado com ferramentas.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778719106539\"><strong class=\"schema-faq-question\">Qual \u00e9 a dureza de trabalho comum do a\u00e7o ferramenta O1?<\/strong> <p class=\"schema-faq-answer\">A dureza t\u00edpica do a\u00e7o ferramenta O1 \u00e9 de cerca de <strong>58\u201360 HRC<\/strong> ap\u00f3s t\u00eampera e revenimento. A faixa pr\u00e1tica mais ampla \u00e9 de cerca de <strong>56\u201362 HRC<\/strong>.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778719107523\"><strong class=\"schema-faq-question\">62 HRC \u00e9 uma dureza excessiva para o a\u00e7o O1?<\/strong> <p class=\"schema-faq-answer\">Nem sempre. Um HRC de\u00a0<strong>60-62<\/strong>\u00a0Pode ser adequado para ferramentas que exigem melhor reten\u00e7\u00e3o de fio e resist\u00eancia ao desgaste. Para ferramentas expostas a impactos, suporte inadequado ou risco de fissuras, uma dureza ligeiramente menor pode ser mais segura.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778719138724\"><strong class=\"schema-faq-question\">Por que o a\u00e7o O1 perde dureza durante o revenimento?<\/strong> <p class=\"schema-faq-answer\">A liga O1 perde dureza durante o revenido porque a martensita dura formada durante a t\u00eampera se transforma em martensita revenida. \u00c0 medida que a temperatura de revenido aumenta, a dureza diminui e a tenacidade melhora.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778719139476\"><strong class=\"schema-faq-question\">O1 \u00e9 mais resistente ao desgaste do que D2?<\/strong> <p class=\"schema-faq-answer\">O a\u00e7o O1 possui boa resist\u00eancia ao desgaste para ferramentas de trabalho a frio em geral, mas o a\u00e7o D2 apresenta resist\u00eancia ao desgaste abrasivo muito superior devido ao seu alto teor de carbono e carboneto de cromo.<\/p> <\/div> <\/div>","protected":false},"excerpt":{"rendered":"<p>O1 Steel Hardness: Annealed, Quenched and Tempered HRC Range O1 tool steel is usually supplied in the annealed condition, with a hardness typically not exceeding about 217 HBW. After oil quenching, O1 can reach about 64\u201365 HRC in the as-quenched condition. For practical use, O1 steel is hardened and tempered. Its typical hardness is about [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15315,"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-15314","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.9 (Yoast SEO v27.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>O1 Steel Hardness: Annealed, Quenched &amp; Tempered HRC Guide - AoboSteel<\/title>\n<meta name=\"description\" content=\"O1 steel typically works at 58\u201360 HRC after hardening and tempering. Compare annealed hardness, as-quenched hardness, tempering chart, and application hardness.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aobosteel.com\/pt\/o1-steel-hardness\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"O1 Steel Hardness: Annealed, Quenched &amp; Tempered HRC Guide\" \/>\n<meta property=\"og:description\" content=\"O1 steel typically works at 58\u201360 HRC after hardening and tempering. 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However, it must be tempered before use with tools.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/o1-steel-hardness\/#faq-question-1778719106539","position":3,"url":"https:\/\/aobosteel.com\/o1-steel-hardness\/#faq-question-1778719106539","name":"Qual \u00e9 a dureza de trabalho comum do a\u00e7o ferramenta O1?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The typical hardness of O1 tool steel is about <strong>58\u201360 HRC<\/strong> after hardening and tempering. The broader practical range is about <strong>56\u201362 HRC<\/strong>.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/o1-steel-hardness\/#faq-question-1778719107523","position":4,"url":"https:\/\/aobosteel.com\/o1-steel-hardness\/#faq-question-1778719107523","name":"62 HRC \u00e9 uma dureza excessiva para o a\u00e7o O1?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Not always. An HRC of\u00a0<strong>60\u201362<\/strong>\u00a0can be suitable for tools that require better edge retention and wear resistance. For tools exposed to impact, poor support, or cracking risk, a slightly lower hardness may be safer.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/o1-steel-hardness\/#faq-question-1778719138724","position":5,"url":"https:\/\/aobosteel.com\/o1-steel-hardness\/#faq-question-1778719138724","name":"Por que o a\u00e7o O1 perde dureza durante o revenimento?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"O1 loses hardness during tempering because the hard martensite formed during quenching becomes tempered martensite. As tempering temperature increases, hardness decreases and toughness improves.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/o1-steel-hardness\/#faq-question-1778719139476","position":6,"url":"https:\/\/aobosteel.com\/o1-steel-hardness\/#faq-question-1778719139476","name":"O1 \u00e9 mais resistente ao desgaste do que D2?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"No. O1 has good wear resistance for general cold-work tools, but D2 has much higher abrasive wear resistance because of its high carbon and high chromium carbide content.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"}]}},"uagb_featured_image_src":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-ad.avif",1254,1254,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-ad-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-ad-300x300.avif",300,300,true],"medium_large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-ad-768x768.avif",768,768,true],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-ad-1024x1024.avif",1024,1024,true],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-ad.avif",1254,1254,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-ad.avif",1254,1254,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-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":"O1 Steel Hardness: Annealed, Quenched and Tempered HRC Range O1 tool steel is usually supplied in the annealed condition, with a hardness typically not exceeding about 217 HBW. After oil quenching, O1 can reach about 64\u201365 HRC in the as-quenched condition. For practical use, O1 steel is hardened and tempered. Its typical hardness is about&hellip;","rttpg_featured_image_url":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-ad.avif",1254,1254,false],"landscape":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-ad.avif",1254,1254,false],"portraits":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-ad.avif",1254,1254,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-ad-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-ad-300x300.avif",300,300,true],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-ad-1024x1024.avif",1024,1024,true],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-ad.avif",1254,1254,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-ad.avif",1254,1254,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O1-hardness-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":"O1 Steel Hardness: Annealed, Quenched and Tempered HRC Range O1 tool steel is usually supplied in the annealed condition, with a hardness typically not exceeding about 217 HBW. After oil quenching, O1 can reach about 64\u201365 HRC in the as-quenched condition. For practical use, O1 steel is hardened and tempered. Its typical hardness is about&hellip;","_links":{"self":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/15314","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=15314"}],"version-history":[{"count":1,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/15314\/revisions"}],"predecessor-version":[{"id":16157,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/15314\/revisions\/16157"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/media\/15315"}],"wp:attachment":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/media?parent=15314"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}