{"id":15199,"date":"2026-05-09T21:04:17","date_gmt":"2026-05-09T13:04:17","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=15199"},"modified":"2026-05-09T21:04:19","modified_gmt":"2026-05-09T13:04:19","slug":"s7-tool-steel-hardness","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/s7-tool-steel-hardness\/","title":{"rendered":"Dureza do a\u00e7o ferramenta S7: Faixa HRC, dureza HB recozida e dureza de trabalho."},"content":{"rendered":"<div class=\"wp-block-uagb-container uagb-block-14c6cb9b alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-1024x576.avif\" alt=\"\" class=\"wp-image-15200\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-1024x576.avif 1024w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-300x169.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-768x432.avif 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-1536x864.avif 1536w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-18x10.avif 18w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness.avif 1672w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h1 class=\"wp-block-heading has-text-align-center\" id=\"h-s7-tool-steel-hardness\">Dureza do a\u00e7o para ferramentas S7<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">O a\u00e7o ferramenta S7 \u00e9 normalmente fornecido na condi\u00e7\u00e3o recozida a cerca de <strong>187\u2013223 HB<\/strong>, com muitas especifica\u00e7\u00f5es que permitem uma dureza m\u00e1xima ap\u00f3s recozimento de cerca de <strong>230 HB<\/strong>. Ap\u00f3s t\u00eampera e revenido, o a\u00e7o S7 \u00e9 comumente utilizado em <strong>54\u201358 HRC<\/strong>. Para muitos pun\u00e7\u00f5es, matrizes, ferramentas de conforma\u00e7\u00e3o, cinz\u00e9is, l\u00e2minas de corte e outros componentes sujeitos a impactos, <strong>56\u201358 HRC<\/strong> \u00e9 geralmente a faixa de trabalho mais pr\u00e1tica.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O S7 pode alcan\u00e7ar cerca de <strong>60\u201361 HRC<\/strong> ap\u00f3s t\u00eampera, mas essa geralmente n\u00e3o \u00e9 a melhor condi\u00e7\u00e3o de servi\u00e7o. Na dureza m\u00e1xima, o S7 perde parte da tenacidade que o torna \u00fatil como a\u00e7o ferramenta resistente a impactos. No uso real de ferramentas, a dureza correta n\u00e3o \u00e9 a HRC mais alta poss\u00edvel. \u00c9 a faixa de dureza que proporciona resist\u00eancia e durabilidade suficientes, permitindo que a ferramenta absorva impactos sem rachar ou lascar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para uma tabela num\u00e9rica r\u00e1pida de dureza ap\u00f3s recozimento, dureza ap\u00f3s t\u00eampera, dureza de trabalho e convers\u00e3o de HRC para HB, consulte nosso <a href=\"https:\/\/aobosteel.com\/pt\/s7-tool-steel-rockwell-hardness-chart\/\">Tabela de dureza Rockwell do a\u00e7o para ferramentas S7<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A Aobo Steel fornece barras redondas, barras chatas e chapas de a\u00e7o S7 em grandes quantidades. Oferecemos servi\u00e7os de inspe\u00e7\u00e3o de dureza, verifica\u00e7\u00e3o da composi\u00e7\u00e3o qu\u00edmica, teste ultrass\u00f4nico quando necess\u00e1rio e documenta\u00e7\u00e3o de Certificado de Tipo de Material (MTC) para cada pedido. Entre em contato. <a href=\"mailto:sales@aobosteel.com\">sales@aobosteel.com<\/a> Para disponibilidade e cota\u00e7\u00e3o das dimens\u00f5es do a\u00e7o ferramenta S7.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-hard-is-s7-tool-steel\">Qual a dureza do a\u00e7o ferramenta S7?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O a\u00e7o ferramenta S7 \u00e9 geralmente fornecido macio, em condi\u00e7\u00e3o recozida, com dureza de aproximadamente 187\u2013223 HB. Ap\u00f3s tratamento t\u00e9rmico, \u00e9 comumente utilizado com dureza em torno de <strong>54\u201358 HRC<\/strong>. Um alvo pr\u00e1tico para muitas ferramentas de trabalho a frio com carga de impacto \u00e9 <strong>56\u201358 HRC<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O ponto importante \u00e9 que a dureza do a\u00e7o S7 deve ser avaliada juntamente com a tenacidade. O a\u00e7o S7 n\u00e3o \u00e9 escolhido principalmente para atingir a maior dureza Rockwell. Ele \u00e9 escolhido quando uma ferramenta requer dureza \u00fatil, boa resist\u00eancia mec\u00e2nica e uma resist\u00eancia ao impacto muito superior \u00e0 dos a\u00e7os para trabalho a frio com alto teor de carbono, que s\u00e3o mais fr\u00e1geis.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Ponto de dureza S7<\/strong><\/td><td><strong>Significado pr\u00e1tico<\/strong><\/td><\/tr><tr><td>187\u2013223 HB recozido<\/td><td>condi\u00e7\u00e3o normal de fornecimento usin\u00e1vel<\/td><\/tr><tr><td>Aproximadamente 230 HB no m\u00e1ximo<\/td><td>Refer\u00eancia superior comum para material recozido<\/td><\/tr><tr><td>60\u201361 HRC ap\u00f3s t\u00eampera<\/td><td>Est\u00e1gio m\u00e1ximo poss\u00edvel antes da t\u00eampera<\/td><\/tr><tr><td>54\u201358 HRC ap\u00f3s t\u00eampera<\/td><td>Faixa comum de dureza de trabalho<\/td><\/tr><tr><td>56\u201358 HRC<\/td><td>Alcance pr\u00e1tico para muitas ferramentas com carga de choque.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A dureza do a\u00e7o S7 ap\u00f3s t\u00eampera pode parecer atraente, mas ele n\u00e3o deve ser usado sem revenimento. O a\u00e7o S7 sem revenimento apresenta alta tens\u00e3o interna e \u00e9 mais propenso a trincar ou lascar sob impacto. O revenimento \u00e9 necess\u00e1rio para converter a alta dureza em desempenho adequado para ferramentas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Dureza do a\u00e7o ferramenta S7 em condi\u00e7\u00e3o recozida<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O a\u00e7o ferramenta S7 geralmente \u00e9 adquirido do fornecedor de a\u00e7o no estado recozido. Nesse estado, a dureza \u00e9 tipicamente <strong>187\u2013223 HB<\/strong>, com um valor m\u00e1ximo aceit\u00e1vel geralmente em torno de <strong>230 HB<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Essa condi\u00e7\u00e3o de material macio \u00e9 intencional. Ela permite que o material seja cortado, perfurado, fresado, retificado e preparado antes do tratamento t\u00e9rmico final. Para a inspe\u00e7\u00e3o de materiais recebidos, a dureza Brinell \u00e9 mais \u00fatil do que a dureza Rockwell C, pois o material recozido S7 \u00e9 muito macio para ser descrito com precis\u00e3o pela escala HRC.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O comprador n\u00e3o deve considerar o a\u00e7o S7 recozido como defeituoso simplesmente por ser muito mais macio do que a dureza final de trabalho. O fornecedor disponibiliza o a\u00e7o S7 em condi\u00e7\u00f5es usin\u00e1veis. O comprador ou a empresa de tratamento t\u00e9rmico, ent\u00e3o, produz a dureza final de acordo com o projeto da ferramenta e os requisitos de servi\u00e7o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para a compra de mat\u00e9ria-prima, a dureza ap\u00f3s recozimento \u00e9 usada principalmente para confirmar a usinabilidade e as condi\u00e7\u00f5es de fornecimento. A dureza Rockwell C final refere-se ao est\u00e1gio posterior do tratamento t\u00e9rmico, e n\u00e3o \u00e0 condi\u00e7\u00e3o original de fornecimento do a\u00e7o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Dureza do a\u00e7o ferramenta S7 ap\u00f3s tratamento t\u00e9rmico<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A dureza S7 ap\u00f3s tratamento t\u00e9rmico depende da temperatura de austenitiza\u00e7\u00e3o, do m\u00e9todo de t\u00eampera, da temperatura de revenido, da dimens\u00e3o da se\u00e7\u00e3o transversal e da aplica\u00e7\u00e3o final. Um processo de t\u00eampera comum inclui o pr\u00e9-aquecimento a cerca de <strong>1200\u20131300\u00b0F<\/strong> <strong>(650\u2013705\u00b0C)<\/strong>, seguida de austenitiza\u00e7\u00e3o a cerca de\u00a0<strong>1695\u20131750\u00b0F<\/strong>\u00a0<strong>(925\u2013955\u00b0C)<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ap\u00f3s o resfriamento brusco, S7 pode atingir cerca de <strong>60\u201361 HRC<\/strong>. Essa condi\u00e7\u00e3o \u00e9 principalmente uma etapa de tratamento t\u00e9rmico, n\u00e3o uma condi\u00e7\u00e3o normal de trabalho. Sem revenimento, o a\u00e7o apresenta alta tens\u00e3o interna e menor seguran\u00e7a sob cargas de impacto.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ap\u00f3s o processo de t\u00eampera, o a\u00e7o S7 \u00e9 normalmente ajustado para uma faixa de trabalho mais segura. Para a maioria das ferramentas resistentes a impactos, a faixa pr\u00e1tica \u00e9 <strong>54\u201358 HRC<\/strong>. Quando a ferramenta precisa tanto de resist\u00eancia na borda quanto de resist\u00eancia a impactos, <strong>56\u201358 HRC<\/strong> Geralmente, \u00e9 um objetivo melhor do que a dureza m\u00e1xima.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Est\u00e1gio de tratamento t\u00e9rmico<\/strong><\/td><td><strong>Dureza t\u00edpica<\/strong><\/td><td><strong>Significado pr\u00e1tico<\/strong><\/td><\/tr><tr><td>Recozido antes do endurecimento<\/td><td>187\u2013223 HB<\/td><td>Adequado para usinagem<\/td><\/tr><tr><td>Como extinto<\/td><td>60\u201361 HRC<\/td><td>Alta dureza com alta tens\u00e3o interna<\/td><\/tr><tr><td>Temperado a cerca de 205\u2013230\u00b0C (400\u2013450\u00b0F)<\/td><td>cerca de 57\u201358 HRC<\/td><td>Condi\u00e7\u00f5es comuns de trabalho de alta resist\u00eancia<\/td><\/tr><tr><td>Temperado a altas temperaturas<\/td><td>cerca de 45\u201357 HRC<\/td><td>Utilizado quando a resist\u00eancia ou a exposi\u00e7\u00e3o ao calor s\u00e3o mais importantes.<\/td><\/tr><tr><td>Temperado a cerca de 1100\u00b0F \/ 595\u00b0C<\/td><td>cerca de 46 HRC<\/td><td>Menor dureza para condi\u00e7\u00f5es de servi\u00e7o espec\u00edficas.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A dureza final deve ser compat\u00edvel com o modo de falha da ferramenta. Um pun\u00e7\u00e3o que lasca sob impacto pode exigir menor dureza. Uma aresta de corte que se deforma ou enrola pode exigir maior dureza, melhor tratamento t\u00e9rmico ou um tipo de a\u00e7o diferente.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Dureza de trabalho recomendada para aplica\u00e7\u00f5es S7<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A dureza S7 deve ser selecionada de acordo com o risco de servi\u00e7o da ferramenta. Se a ferramenta falhar principalmente devido a trincas, lascas ou quebras por impacto, a tenacidade \u00e9 mais importante do que a dureza m\u00e1xima. Se a ferramenta falhar principalmente devido ao desgaste da aresta ou \u00e0 deforma\u00e7\u00e3o da superf\u00edcie, uma dureza ligeiramente maior pode ser \u00fatil, mas n\u00e3o deve comprometer a resist\u00eancia ao choque exigida para a aplica\u00e7\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para muitas ferramentas S7, <strong>56\u201358 HRC<\/strong> \u00e9 uma meta pr\u00e1tica. Uma gama mais ampla de <strong>54\u201358 HRC<\/strong> Tamb\u00e9m \u00e9 comum quando a resist\u00eancia ao impacto \u00e9 mais importante do que a resist\u00eancia ao desgaste.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Aplicativo<\/strong><\/td><td><strong>Dureza S7 sugerida<\/strong><\/td><td><strong>L\u00f3gica de Sele\u00e7\u00e3o<\/strong><\/td><\/tr><tr><td>Pun\u00e7\u00f5es e matrizes de corte em geral<\/td><td>56\u201358 HRC<\/td><td>Equilibra a resist\u00eancia das bordas e a resist\u00eancia a impactos.<\/td><\/tr><tr><td>Soco pesado<\/td><td>56\u201358 HRC, por vezes mais elevado com cautela.<\/td><td>Uma dureza maior aumenta o risco de fissuras.<\/td><\/tr><tr><td>Pun\u00e7\u00f5es de relevo<\/td><td>cerca de 58\u201360 HRC<\/td><td>Utilizado quando os detalhes da superf\u00edcie e a resist\u00eancia das bordas s\u00e3o importantes.<\/td><\/tr><tr><td>Matrizes de cunhagem<\/td><td>cerca de 57\u201359 HRC<\/td><td>Precisa de dureza, mas ainda suporta carga de impacto.<\/td><\/tr><tr><td>Matrizes de estampagem a frio<\/td><td>56\u201360 HRC<\/td><td>Depende da carga de conforma\u00e7\u00e3o e do requisito de desgaste.<\/td><\/tr><tr><td>Ferramentas para cortar madeira e metal<\/td><td>55\u201360 HRC<\/td><td>Uma maior dureza pode melhorar a reten\u00e7\u00e3o do fio.<\/td><\/tr><tr><td>Formas m\u00e9dias e grandes<\/td><td>53\u201356 HRC<\/td><td>Se\u00e7\u00f5es maiores geralmente exigem mais resist\u00eancia.<\/td><\/tr><tr><td>aplica\u00e7\u00f5es de moldes de pl\u00e1stico<\/td><td>cerca de 58 HRC<\/td><td>\u00datil onde s\u00e3o necess\u00e1rias facilidade de polimento e resist\u00eancia.<\/td><\/tr><tr><td>Suportes de inser\u00e7\u00e3o ou suportes estruturais<\/td><td>28\u201332 HRC<\/td><td>Utilizado como componente de suporte, n\u00e3o como superf\u00edcie de corte.<\/td><\/tr><tr><td>Ferramentas moderadas para trabalhos a quente<\/td><td>cerca de 45\u201357 HRC<\/td><td>A t\u00eampera deve corresponder \u00e0 temperatura de servi\u00e7o.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Para uso moderado em trabalhos a quente, o a\u00e7o S7 geralmente \u00e9 temperado a uma temperatura mais alta do que as ferramentas para trabalho a frio. Isso reduz a dureza, mas melhora a estabilidade quando a ferramenta \u00e9 exposta ao calor. Se a aplica\u00e7\u00e3o envolver fissuras t\u00e9rmicas severas, fadiga t\u00e9rmica ou exposi\u00e7\u00e3o prolongada a altas temperaturas, o a\u00e7o H13 geralmente \u00e9 uma escolha melhor do que o S7.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Equil\u00edbrio entre dureza e tenacidade S7<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O S7 \u00e9 um a\u00e7o ferramenta resistente a impactos. Sua dureza deve sempre ser entendida em conjunto com sua tenacidade. Uma ferramenta em <strong>60\u201361 HRC<\/strong> Pode ser muito duro, mas muito quebradi\u00e7o para servi\u00e7os de impacto. Uma ferramenta em <strong>56\u201358 HRC<\/strong> Pode apresentar uma resist\u00eancia ao desgaste ligeiramente menor, mas geralmente \u00e9 muito mais seguro sob cargas de choque repetidas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Essa \u00e9 a principal raz\u00e3o pela qual o a\u00e7o S7 \u00e9 usado em pun\u00e7\u00f5es, cinz\u00e9is, l\u00e2minas de corte, ferramentas de conforma\u00e7\u00e3o, matrizes de estampagem e outras ferramentas de impacto. Ele n\u00e3o \u00e9 escolhido para substituir o a\u00e7o D2 em casos de desgaste abrasivo severo. Sua escolha se d\u00e1 quando a\u00e7os mais duros lascam, trincam ou quebram.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A vantagem pr\u00e1tica do S7 \u00e9 que ele consegue manter uma dureza \u00fatil, oferecendo ao mesmo tempo uma resist\u00eancia ao impacto muito superior \u00e0 de muitos a\u00e7os-ferramenta para trabalho a frio com maior teor de carbono. Quando o principal modo de falha \u00e9 a quebra, o S7 geralmente apresenta um desempenho melhor do que um a\u00e7o mais duro e mais quebradi\u00e7o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A dureza confere \u00e0 ferramenta resist\u00eancia \u00e0 indenta\u00e7\u00e3o, deforma\u00e7\u00e3o e colapso da aresta de corte. A tenacidade confere \u00e0 ferramenta resist\u00eancia a trincas e fraturas repentinas. O a\u00e7o S7 apresenta melhor desempenho quando essas duas propriedades est\u00e3o equilibradas, e n\u00e3o quando uma delas \u00e9 levada ao limite.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Por que o a\u00e7o S7 nem sempre deve ser endurecido at\u00e9 a dureza m\u00e1xima de HRC?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Uma dureza m\u00e1xima de <strong>60\u201361 HRC<\/strong> Embora possa parecer atraente em um relat\u00f3rio de dureza, geralmente n\u00e3o \u00e9 o melhor alvo para ferramentas S7. Nesse n\u00edvel, a ferramenta tem menor capacidade de absorver impactos e o risco de lascamento, trincas ou fraturas repentinas aumenta.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Isso \u00e9 especialmente importante para pun\u00e7\u00f5es, ferramentas de estampagem, cinz\u00e9is, ferramentas de conforma\u00e7\u00e3o e componentes expostos a cargas concentradas. Essas ferramentas n\u00e3o precisam apenas de uma superf\u00edcie dura. Elas precisam de resist\u00eancia suficiente para suportar impactos repetidos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Levar o a\u00e7o S7 \u00e0 dureza m\u00e1xima tamb\u00e9m pode criar problemas de tratamento t\u00e9rmico. Temperaturas de austenitiza\u00e7\u00e3o excessivas, tempos de perman\u00eancia prolongados, t\u00eampera severa ou revenimento insuficiente podem deixar altas tens\u00f5es residuais na ferramenta. A pe\u00e7a pode passar no teste de dureza, mas ainda assim falhar precocemente em servi\u00e7o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para a maioria das ferramentas S7, <strong>56\u201358 HRC<\/strong> \u00c9 mais confi\u00e1vel do que a dureza m\u00e1xima. O objetivo \u00e9 adequar a dureza \u00e0 carga de trabalho, e n\u00e3o buscar o maior n\u00famero HRC.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Regras pr\u00e1ticas para sele\u00e7\u00e3o de dureza do a\u00e7o ferramenta S7<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A dureza S7 deve ser selecionada com base no modo de falha. A dureza correta \u00e9 aquela que resolve o problema real em servi\u00e7o.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Risco de falha<\/strong><\/td><td><strong>Melhor estrat\u00e9gia de dureza S7<\/strong><\/td><\/tr><tr><td>Quebras, rachaduras ou lascas na ferramenta<\/td><td>Reduzir a dureza para 54\u201356 HRC<\/td><\/tr><tr><td>A borda enrola ou deforma.<\/td><td>Aumente a dureza cuidadosamente at\u00e9 atingir 57\u201358 HRC.<\/td><\/tr><tr><td>A superf\u00edcie se desgasta muito rapidamente.<\/td><td>Considere uma dureza de 58 HRC, tratamento de superf\u00edcie ou uma classe de dureza mais resistente ao desgaste.<\/td><\/tr><tr><td>A ferramenta apresenta impacto repetido.<\/td><td>Evite a dureza m\u00e1xima e priorize a resist\u00eancia.<\/td><\/tr><tr><td>A ferramenta funciona em temperaturas elevadas.<\/td><td>Utilize uma temperatura de revenido mais alta e aceite uma dureza menor.<\/td><\/tr><tr><td>A ferramenta precisa de m\u00e1xima resist\u00eancia ao desgaste abrasivo.<\/td><td>Considere A2 ou D2 em vez de S7.<\/td><\/tr><tr><td>A ferramenta enfrenta condi\u00e7\u00f5es severas de trabalho a quente.<\/td><td>Considere H13 em vez de S7.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Esta \u00e9 a forma mais pr\u00e1tica de usar o a\u00e7o S7. Ele n\u00e3o \u00e9 o melhor a\u00e7o para todas as ferramentas de alta resist\u00eancia. \u00c9 a melhor escolha quando a ferramenta precisa ser dura o suficiente para funcionar, mas resistente o bastante para n\u00e3o quebrar.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Dureza S7 comparada com D2, A2, O1 e H13<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">As classes S7, D2, A2, O1 e H13 n\u00e3o s\u00e3o selecionadas apenas pela dureza. Cada classe \u00e9 projetada para um equil\u00edbrio diferente entre resist\u00eancia ao desgaste, tenacidade, estabilidade dimensional e resist\u00eancia ao calor.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Grau de a\u00e7o<\/strong><\/td><td><strong>Dureza de trabalho t\u00edpica<\/strong><\/td><td><strong>Principal for\u00e7a<\/strong><\/td><td><strong>Comparado com S7<\/strong><\/td><\/tr><tr><td>S7<\/td><td>54\u201358 HRC<\/td><td>Resist\u00eancia a choques e robustez a impactos<\/td><td>Ideal quando a quebra \u00e9 o principal risco.<\/td><\/tr><tr><td><a href=\"https:\/\/aobosteel.com\/pt\/a2-tool-steel\/\">A2<\/a><\/td><td>57\u201362 HRC<\/td><td>Resist\u00eancia ao desgaste equilibrada e estabilidade dimensional.<\/td><td>Mais resistente e com maior durabilidade, por\u00e9m menos robusto.<\/td><\/tr><tr><td><a href=\"https:\/\/aobosteel.com\/pt\/d2-tool-steel\/\">D2<\/a><\/td><td>54\u201361 HRC<\/td><td>Alta resist\u00eancia ao desgaste abrasivo<\/td><td>Melhor resist\u00eancia ao desgaste, por\u00e9m mais quebradi\u00e7o.<\/td><\/tr><tr><td><a href=\"https:\/\/aobosteel.com\/pt\/o1-tool-steel\/\">O1<\/a><\/td><td>57\u201362 HRC<\/td><td>Uso geral em trabalhos a frio e usinabilidade<\/td><td>Consegue correr mais r\u00e1pido, mas tem menor resist\u00eancia a impactos.<\/td><\/tr><tr><td><a href=\"https:\/\/aobosteel.com\/pt\/h13-tool-steel\/\">H13<\/a><\/td><td>cerca de 38\u201353 HRC<\/td><td>Resist\u00eancia ao calor e \u00e0 fadiga t\u00e9rmica<\/td><td>Melhor para condi\u00e7\u00f5es severas de trabalho a quente.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Em compara\u00e7\u00e3o com A2, D2 e O1, o a\u00e7o S7 normalmente n\u00e3o \u00e9 escolhido pela sua maior dureza de trabalho ou pela maior resist\u00eancia ao desgaste abrasivo. A2 e O1 s\u00e3o frequentemente usados com durezas em torno de 57\u201362 HRC, enquanto D2 \u00e9 comumente usado em torno de 58\u201360 HRC para ferramentas de trabalho a frio com maior incid\u00eancia de desgaste. O a\u00e7o S7 geralmente \u00e9 selecionado quando o risco de trincas, lascamento ou quebra por impacto \u00e9 maior do que o risco de desgaste. O a\u00e7o H13 \u00e9 diferente, pois \u00e9 um a\u00e7o para trabalho a quente, frequentemente usado em n\u00edveis de dureza mais baixos para resist\u00eancia \u00e0 fadiga t\u00e9rmica e fissura\u00e7\u00e3o a quente, em vez de servi\u00e7o de impacto a frio.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quando a dureza S7 n\u00e3o \u00e9 a solu\u00e7\u00e3o adequada<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O a\u00e7o S7 n\u00e3o deve ser escolhido apenas por atingir alta dureza. Se a aplica\u00e7\u00e3o exigir principalmente alta resist\u00eancia ao desgaste abrasivo, os a\u00e7os D2 ou A2 podem ser mais adequados. Se a ferramenta operar em altas temperaturas, o a\u00e7o H13 pode ser mais seguro. Se a aplica\u00e7\u00e3o exigir usinagem simples e servi\u00e7o moderado, o a\u00e7o O1 pode ser suficiente.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O a\u00e7o S7 \u00e9 o mais resistente quando a falha por impacto \u00e9 o principal risco. Se uma ferramenta feita de D2, A2 ou O1 rachar, lascar ou quebrar sob carga de choque, o S7 torna-se uma forte op\u00e7\u00e3o. Se a ferramenta se desgastar apenas lentamente por abras\u00e3o, o S7 pode n\u00e3o resolver o problema real.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Por isso, a dureza por si s\u00f3 n\u00e3o \u00e9 suficiente para a sele\u00e7\u00e3o de a\u00e7os para ferramentas. Um a\u00e7o com maior dureza Rockwell C (HRC) ainda pode falhar mais rapidamente se sua tenacidade, resist\u00eancia ao calor ou mecanismo de desgaste n\u00e3o forem adequados \u00e0 aplica\u00e7\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>A Aobo Steel fornece a\u00e7o ferramenta S7 em estado recozido para posterior usinagem e tratamento t\u00e9rmico.<\/em> <em>Para barras redondas, barras planas ou chapas S7 usadas em pun\u00e7\u00f5es, matrizes, ferramentas de impacto, ferramentas de conforma\u00e7\u00e3o ou componentes sujeitos a choques, entre em contato. <a href=\"mailto:sales@aobosteel.com\">sales@aobosteel.com<\/a> Com as dimens\u00f5es, quantidade, toler\u00e2ncia, porto de destino e requisitos de inspe\u00e7\u00e3o que voc\u00ea precisa, a Aobo Steel pode ajudar a confirmar se o a\u00e7o S7 \u00e9 adequado para sua aplica\u00e7\u00e3o ou se os a\u00e7os A2, D2, O1 ou H13 s\u00e3o uma op\u00e7\u00e3o melhor.<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/S7-AD-1024x1024.avif\" alt=\"\" class=\"wp-image-14916\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/S7-AD-1024x1024.avif 1024w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/S7-AD-300x300.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/S7-AD-150x150.avif 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/S7-AD-768x768.avif 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/S7-AD-12x12.avif 12w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/04\/S7-AD.avif 1254w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faq\">Perguntas frequentes<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1778330686391\"><strong class=\"schema-faq-question\">Qual a dureza do a\u00e7o ferramenta S7?<\/strong> <p class=\"schema-faq-answer\">O a\u00e7o ferramenta S7 \u00e9 geralmente fornecido na condi\u00e7\u00e3o recozida, com uma dureza de cerca de <strong>187\u2013223 HB<\/strong>. Ap\u00f3s o endurecimento e revenimento, \u00e9 comumente utilizado em torno de <strong>54\u201358 HRC<\/strong>, com <strong>56\u201358 HRC<\/strong> sendo uma faixa de trabalho pr\u00e1tica para muitas ferramentas com carga de choque<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778330701138\"><strong class=\"schema-faq-question\">Qual \u00e9 a dureza do a\u00e7o ferramenta S7 ap\u00f3s recozimento?<\/strong> <p class=\"schema-faq-answer\">O a\u00e7o ferramenta S7 recozido \u00e9 normalmente fornecido com uma dureza de cerca de <strong>187\u2013223 HB<\/strong>. Algumas refer\u00eancias de fornecedores podem usar <strong>200\u2013225 HBW<\/strong> ou sobre <strong>230 HB<\/strong> como refer\u00eancia superior de dureza ap\u00f3s recozimento.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778330701964\"><strong class=\"schema-faq-question\">Qual \u00e9 a melhor dureza de trabalho para o a\u00e7o ferramenta S7?<\/strong> <p class=\"schema-faq-answer\">A dureza t\u00edpica do a\u00e7o ferramenta S7 ap\u00f3s tratamento t\u00e9rmico \u00e9 de 54\u201358 HRC. Para pun\u00e7\u00f5es, matrizes, cinz\u00e9is, l\u00e2minas de corte e outras ferramentas sujeitas a impacto, <strong>56\u201358 HRC<\/strong> \u00c9 frequentemente um objetivo pr\u00e1tico, pois equilibra dureza e resist\u00eancia.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778330714359\"><strong class=\"schema-faq-question\">O a\u00e7o ferramenta S7 pode atingir 60 HRC?<\/strong> <p class=\"schema-faq-answer\">Sim. O S7 pode alcan\u00e7ar cerca de <strong>59\u201361 HRC<\/strong> ap\u00f3s o endurecimento. No entanto, essa nem sempre \u00e9 a melhor condi\u00e7\u00e3o de trabalho. Para ferramentas sujeitas a impactos, o a\u00e7o S7 \u00e9 frequentemente temperado para uma dureza ligeiramente menor, a fim de reduzir o risco de lascamento, fissuras ou quebra por impacto.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778330734076\"><strong class=\"schema-faq-question\">Para o a\u00e7o ferramenta S7, uma dureza maior \u00e9 sempre melhor?<\/strong> <p class=\"schema-faq-answer\">N\u00e3o. Uma dureza maior pode melhorar a resist\u00eancia da aresta de corte e a resist\u00eancia ao desgaste, mas pode reduzir a resist\u00eancia ao impacto. Se a ferramenta falhar principalmente devido a rachaduras ou quebras, uma faixa de dureza mais baixa geralmente \u00e9 mais segura. Se a ferramenta falhar principalmente devido \u00e0 deforma\u00e7\u00e3o ou desgaste, uma dureza maior pode ajudar.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1778330734749\"><strong class=\"schema-faq-question\">Por que o S7 recozido \u00e9 medido em HB em vez de HRC?<\/strong> <p class=\"schema-faq-answer\">O a\u00e7o S7 recozido \u00e9 relativamente macio e usin\u00e1vel antes do tratamento t\u00e9rmico final, portanto\u00a0<strong>Dureza Brinell, HB ou HBW<\/strong>\u00a0\u00e9 mais adequado. A dureza Rockwell C \u00e9 mais \u00fatil ap\u00f3s o a\u00e7o S7 ter sido temperado e revenido.<\/p> <\/div> <\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>S7 Tool Steel Hardness S7 tool steel is normally supplied in the annealed condition at about 187\u2013223 HB, with many specifications allowing a maximum annealed hardness of about 230 HB. After hardening and tempering, S7 is commonly used at 54\u201358 HRC. For many punches, dies, forming tools, chisels, shear blades, and other shock-loaded components, 56\u201358 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15201,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"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-15199","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.0 (Yoast SEO v28.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>S7 Tool Steel Hardness: HRC Range, Annealed HB &amp; Working Hardness<\/title>\n<meta name=\"description\" content=\"S7 tool steel is usually supplied at 187\u2013223 HB annealed and used around 54\u201358 HRC after heat treatment. 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For punches, dies, chisels, shear blades, and other impact-loaded tools, <strong>56\u201358 HRC<\/strong> is often a practical target because it balances hardness and toughness.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/s7-tool-steel-hardness\/#faq-question-1778330714359","position":4,"url":"https:\/\/aobosteel.com\/s7-tool-steel-hardness\/#faq-question-1778330714359","name":"O a\u00e7o ferramenta S7 pode atingir 60 HRC?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes. S7 can reach about <strong>59\u201361 HRC<\/strong> after hardening. However, this is not always the best working condition. For impact-loaded tools, S7 is often tempered to a slightly lower hardness to reduce the risk of chipping, cracking, or impact breakage.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/s7-tool-steel-hardness\/#faq-question-1778330734076","position":5,"url":"https:\/\/aobosteel.com\/s7-tool-steel-hardness\/#faq-question-1778330734076","name":"Para o a\u00e7o ferramenta S7, uma dureza maior \u00e9 sempre melhor?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"No. Higher hardness may improve edge strength and wear resistance, but it can reduce impact toughness. If the tool primarily fails due to cracking or breakage, a lower hardness range is usually safer. If the tool primarily fails due to deformation or wear, a higher hardness may help.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/s7-tool-steel-hardness\/#faq-question-1778330734749","position":6,"url":"https:\/\/aobosteel.com\/s7-tool-steel-hardness\/#faq-question-1778330734749","name":"Por que o S7 recozido \u00e9 medido em HB em vez de HRC?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Annealed S7 is relatively soft and machinable before final heat treatment, so\u00a0<strong>Brinell hardness, HB, or HBW<\/strong>\u00a0is more suitable. Rockwell C hardness is more useful after S7 has been hardened and tempered.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"}]}},"uagb_featured_image_src":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-ad.avif",1254,1254,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-ad-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-ad-300x300.avif",300,300,true],"medium_large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-ad-768x768.avif",768,768,true],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-ad-1024x1024.avif",1024,1024,true],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-ad.avif",1254,1254,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-ad.avif",1254,1254,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-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":"S7 Tool Steel Hardness S7 tool steel is normally supplied in the annealed condition at about 187\u2013223 HB, with many specifications allowing a maximum annealed hardness of about 230 HB. After hardening and tempering, S7 is commonly used at 54\u201358 HRC. For many punches, dies, forming tools, chisels, shear blades, and other shock-loaded components, 56\u201358&hellip;","rttpg_featured_image_url":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-ad.avif",1254,1254,false],"landscape":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-ad.avif",1254,1254,false],"portraits":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-ad.avif",1254,1254,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-ad-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-ad-300x300.avif",300,300,true],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-ad-1024x1024.avif",1024,1024,true],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-ad.avif",1254,1254,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-Hardness-ad.avif",1254,1254,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/S7-Tool-Steel-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":"S7 Tool Steel Hardness S7 tool steel is normally supplied in the annealed condition at about 187\u2013223 HB, with many specifications allowing a maximum annealed hardness of about 230 HB. After hardening and tempering, S7 is commonly used at 54\u201358 HRC. For many punches, dies, forming tools, chisels, shear blades, and other shock-loaded components, 56\u201358&hellip;","_links":{"self":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/15199","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=15199"}],"version-history":[{"count":0,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/pages\/15199\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/media\/15201"}],"wp:attachment":[{"href":"https:\/\/aobosteel.com\/pt\/wp-json\/wp\/v2\/media?parent=15199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}