{"id":15627,"date":"2026-05-23T09:48:18","date_gmt":"2026-05-23T01:48:18","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=15627"},"modified":"2026-05-25T20:32:24","modified_gmt":"2026-05-25T12:32:24","slug":"tool-steels-for-cracking-resistance","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/tool-steels-for-cracking-resistance\/","title":{"rendered":"A\u00e7os ferramenta de alta tenacidade para resist\u00eancia a trincas | Aobo Steel"},"content":{"rendered":"<section class=\"aobo-toughness-page\">\n\n  <style>\n    .aobo-toughness-page {\n      --aobo-blue: #0c56d0;\n      --aobo-blue-dark: #073b8e;\n      --aobo-blue-soft: #eaf2ff;\n      --aobo-blue-line: #c9dcff;\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      font-family: Arial, Helvetica, sans-serif;\n      color: var(--aobo-text);\n     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20px;\n      }\n\n      .aobo-article {\n        padding: 4px 0 0;\n      }\n\n      .aobo-buttons {\n        flex-direction: column;\n      }\n\n      .aobo-article h2 {\n        font-size: 25px;\n      }\n    }\n  <\/style>\n\n  <div class=\"aobo-wrap\">\n\n    <header class=\"aobo-hero\">\n      <span class=\"aobo-eyebrow\">Sele\u00e7\u00e3o de a\u00e7o ferramenta por modo de falha<\/span>\n      <h1>A\u00e7os ferramenta de alta tenacidade para resist\u00eancia a trincas e fraturas<\/h1>\n      <p>\n        Os a\u00e7os-ferramenta de alta tenacidade s\u00e3o utilizados quando trincas, lascas ou fraturas repentinas s\u00e3o os principais modos de falha. Nessas aplica\u00e7\u00f5es, a ferramenta geralmente quebra antes de se desgastar, portanto o material deve absorver cargas de impacto, resistir a concentra\u00e7\u00f5es de tens\u00e3o e retardar a propaga\u00e7\u00e3o de trincas.\n      <\/p>\n    <\/header>\n\n    <section class=\"aobo-product-strip\" aria-label=\"A\u00e7os para ferramentas de alta tenacidade dispon\u00edveis na Aobo Steel.\">\n      <h2>A\u00e7os para ferramentas de alta tenacidade dispon\u00edveis na Aobo Steel.<\/h2>\n      <p class=\"aobo-strip-intro\">\n        A Aobo Steel fornece barras redondas e barras planas de a\u00e7o ferramenta de alta tenacidade para ferramentas de impacto, l\u00e2minas de corte, matrizes de conforma\u00e7\u00e3o, ferramentas para trabalho a quente e aplica\u00e7\u00f5es industriais sens\u00edveis \u00e0 fratura.\n      <\/p>\n\n      <div class=\"aobo-product-grid\">\n        <article class=\"aobo-product-card\">\n          <h3>S7 | 1,2355<\/h3>\n          <p class=\"aobo-card-note\">O melhor a\u00e7o ferramenta de uso geral, resistente a impactos, lascas e fraturas.<\/p>\n          <div class=\"aobo-buttons\">\n            <a class=\"aobo-btn aobo-btn-detail\" href=\"https:\/\/aobosteel.com\/pt\/s7-tool-steel\/\">Ver detalhes<\/a>\n            <a class=\"aobo-btn aobo-btn-inquiry hs-cta-trigger-button hs-cta-trigger-button-230288465624\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n          <\/div>\n        <\/article>\n\n        <article class=\"aobo-product-card\">\n          <h3>S1 | 1,2550<\/h3>\n          <p class=\"aobo-card-note\">A\u00e7o ferramenta com resist\u00eancia a impactos para dureza moderada a quente, puncionamento a quente, corte a quente e ferramentas de impacto selecionadas.<\/p>\n          <div class=\"aobo-buttons\">\n            <a class=\"aobo-btn aobo-btn-detail\" href=\"https:\/\/aobosteel.com\/pt\/s1-tool-steel\/\">Ver detalhes<\/a>\n            <a class=\"aobo-btn aobo-btn-inquiry hs-cta-trigger-button hs-cta-trigger-button-230288465624\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n          <\/div>\n        <\/article>\n\n        <article class=\"aobo-product-card\">\n          <h3>A\u00e7o ferramenta L6<\/h3>\n          <p class=\"aobo-card-note\">Resist\u00eancia mec\u00e2nica aprimorada com n\u00edquel para pe\u00e7as usinadas sujeitas a cisalhamento intenso, conforma\u00e7\u00e3o e impactos.<\/p>\n          <div class=\"aobo-buttons\">\n            <a class=\"aobo-btn aobo-btn-detail\" href=\"https:\/\/aobosteel.com\/pt\/l6-tool-steel\/\">Ver detalhes<\/a>\n            <a class=\"aobo-btn aobo-btn-inquiry hs-cta-trigger-button hs-cta-trigger-button-230288465624\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n          <\/div>\n        <\/article>\n\n        <article class=\"aobo-product-card\">\n          <h3>A\u00e7o para ferramentas H11<\/h3>\n          <p class=\"aobo-card-note\">A\u00e7o para trabalho a quente, utilizado em ferramentas que trincam sob calor, press\u00e3o e ciclos t\u00e9rmicos repetidos.<\/p>\n          <div class=\"aobo-buttons\">\n            <a class=\"aobo-btn aobo-btn-detail\" href=\"https:\/\/aobosteel.com\/pt\/h11-tool-steel\/\">Ver detalhes<\/a>\n            <a class=\"aobo-btn aobo-btn-inquiry hs-cta-trigger-button hs-cta-trigger-button-230288465624\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n          <\/div>\n        <\/article>\n\n        <article class=\"aobo-product-card\">\n          <h3>H13 | 1,2344 | SKD61<\/h3>\n          <p class=\"aobo-card-note\">A\u00e7o balanceado para trabalho a quente, adequado para forjamento, extrus\u00e3o, fundi\u00e7\u00e3o sob press\u00e3o e estampagem a quente.<\/p>\n          <div class=\"aobo-buttons\">\n            <a class=\"aobo-btn aobo-btn-detail\" href=\"https:\/\/aobosteel.com\/pt\/h13-tool-steel\/\">Ver detalhes<\/a>\n            <a class=\"aobo-btn aobo-btn-inquiry hs-cta-trigger-button hs-cta-trigger-button-230288465624\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n          <\/div>\n        <\/article>\n\n      <\/div>\n    <\/section>\n\n    <main class=\"aobo-article\">\n\n      <p>\n        Os a\u00e7os ferramenta de alta tenacidade geralmente apresentam teor de carbono baixo ou moderado e menor quantidade de carbonetos prim\u00e1rios grandes do que os a\u00e7os para trabalho a frio de alta resist\u00eancia ao desgaste. Isso melhora a resist\u00eancia \u00e0 fratura, mas tamb\u00e9m limita a dureza m\u00e1xima e a resist\u00eancia ao desgaste abrasivo.\n      <\/p>\n\n      <h2>Por que a resist\u00eancia \u00e9 importante em casos de fissura\u00e7\u00e3o e fratura?<\/h2>\n      <p>\n        O aparecimento de fissuras geralmente come\u00e7a em cantos vivos, bordas sujeitas a impactos, furos, entalhes ou \u00e1reas expostas a ciclos t\u00e9rmicos repetidos.\n      <\/p>\n      <p>\n        Em a\u00e7os com alto teor de carbono e cromo, os carbonetos de grandes dimens\u00f5es melhoram a resist\u00eancia ao desgaste abrasivo, mas tamb\u00e9m podem servir como pontos de inicia\u00e7\u00e3o de trincas. \u00c9 por isso que classes como D2 e D3 s\u00e3o excelentes op\u00e7\u00f5es para resist\u00eancia ao desgaste, mas nem sempre s\u00e3o as melhores escolhas para impactos severos ou fraturas repentinas.\n      <\/p>\n      <p>\n        Os a\u00e7os-ferramenta de alta tenacidade utilizam um equil\u00edbrio diferente. Eles reduzem a fragilidade relacionada aos carbonetos e dependem mais da resist\u00eancia da matriz, da ductilidade e da resist\u00eancia ao choque.\n      <\/p>\n\n      <h2>Tabela de sele\u00e7\u00e3o de a\u00e7o ferramenta de alta tenacidade<\/h2>\n\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr>\n              <th>Falha \/ Condi\u00e7\u00e3o de funcionamento<\/th>\n              <th>Notas recomendadas<\/th>\n              <th>Por que essas notas se encaixam?<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>Impacto repetido \u00e0 temperatura ambiente<\/td><td>S7, S5, S1<\/td><td>Os a\u00e7os da s\u00e9rie S s\u00e3o projetados para resist\u00eancia a impactos. O S7 oferece o melhor equil\u00edbrio geral, o S5 \u00e9 adequado para ferramentas de impacto severo e o S1 \u00e9 \u00fatil quando tamb\u00e9m \u00e9 necess\u00e1ria alguma dureza a quente.<\/td><\/tr>\n            <tr><td>Pun\u00e7\u00f5es, cinz\u00e9is e ferramentas de impacto entrando em servi\u00e7o.<\/td><td>S7, S1, S5<\/td><td>Esses tipos de a\u00e7o absorvem impactos melhor do que os a\u00e7os de desgaste com alto teor de carbono e reduzem o risco de fratura repentina.<\/td><\/tr>\n            <tr><td>Corte pesado ou conforma\u00e7\u00e3o com lascamento de borda<\/td><td>S7, L6, H11<\/td><td>O a\u00e7o S7 oferece alta resist\u00eancia a impactos, o L6 adiciona tenacidade refor\u00e7ada com n\u00edquel, e o H11 \u00e9 \u00fatil quando a carga \u00e9 combinada com calor.<\/td><\/tr>\n            <tr><td>Socos quentes, cortes quentes ou impacto quente moderado<\/td><td>S1, S7, H11, H13<\/td><td>Esses tipos de a\u00e7o mant\u00eam uma resist\u00eancia melhor sob altas temperaturas do que os a\u00e7os comuns para trabalho a frio.<\/td><\/tr>\n            <tr><td>Forjamento a quente, extrus\u00e3o, fundi\u00e7\u00e3o sob press\u00e3o ou fissura\u00e7\u00e3o por fadiga t\u00e9rmica<\/td><td>H11, H13<\/td><td>Os a\u00e7os para trabalho a quente da s\u00e9rie H combinam tenacidade, resist\u00eancia a altas temperaturas e resist\u00eancia ao craqueamento t\u00e9rmico.<\/td><\/tr>\n            <tr><td>Componentes de m\u00e1quinas pesadas sob carga de choque<\/td><td>L6, S7, H11<\/td><td>Essas classes de a\u00e7o oferecem melhor resist\u00eancia \u00e0 fratura do que os a\u00e7os para trabalho a frio de alto desgaste, mantendo ao mesmo tempo resist\u00eancia e temperabilidade \u00fateis.<\/td><\/tr>\n            <tr><td>Ferramentas de impacto simples, ferramentas manuais ou cinz\u00e9is para corte a frio.<\/td><td>W1, W2, S1<\/td><td>Os a\u00e7os da s\u00e9rie W podem formar uma superf\u00edcie dura com um n\u00facleo mais resistente em aplica\u00e7\u00f5es de t\u00eampera superficial; o S1 oferece melhor resist\u00eancia ao choque.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <h2>Dire\u00e7\u00e3o de Grau<\/h2>\n\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr>\n              <th>Grau<\/th>\n              <th>Dire\u00e7\u00e3o de sele\u00e7\u00e3o<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>S7<\/td><td>O melhor a\u00e7o ferramenta de uso geral, resistente a impactos, lascas e fraturas. Uma \u00f3tima op\u00e7\u00e3o para pun\u00e7\u00f5es, cinz\u00e9is, l\u00e2minas de corte e ferramentas de conforma\u00e7\u00e3o.<\/td><\/tr>\n            <tr><td>S1<\/td><td>Indicado para ferramentas sujeitas a impactos que podem atingir temperaturas moderadamente elevadas, como ferramentas de puncionamento ou corte a quente.<\/td><\/tr>\n            <tr><td>S5<\/td><td>Melhor op\u00e7\u00e3o para impactos severos e ferramentas pneum\u00e1ticas de impacto, onde a resist\u00eancia a choques \u00e9 mais importante do que a resist\u00eancia ao desgaste.<\/td><\/tr>\n            <tr><td>L6<\/td><td>\u00datil quando se necessita de maior tenacidade, mas a aplica\u00e7\u00e3o ainda exige mais resist\u00eancia ao desgaste e temperabilidade do que muitas classes da s\u00e9rie S.<\/td><\/tr>\n            <tr><td>H11<\/td><td>Melhor op\u00e7\u00e3o para ferramentas de trabalho a quente que racham sob calor, press\u00e3o e ciclos t\u00e9rmicos repetidos.<\/td><\/tr>\n            <tr><td>H13<\/td><td>Uma op\u00e7\u00e3o mais equilibrada para trabalho a quente em forjamento, extrus\u00e3o, fundi\u00e7\u00e3o sob press\u00e3o e estampagem a quente, onde s\u00e3o necess\u00e1rias tanto tenacidade quanto resist\u00eancia a altas temperaturas.<\/td><\/tr>\n            <tr><td>W1 \/ W2<\/td><td>Indicado para ferramentas mais simples, onde um endurecimento superficial pode proporcionar uma superf\u00edcie de trabalho resistente com um n\u00facleo mais robusto.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <h2>Quando n\u00e3o escolher a\u00e7os-ferramenta de alta tenacidade<\/h2>\n      <p>\n        Os a\u00e7os-ferramenta de alta tenacidade n\u00e3o s\u00e3o a melhor escolha quando o desgaste abrasivo \u00e9 o principal modo de falha.\n      <\/p>\n      <p>\n        Se a ferramenta perde tamanho, afia\u00e7\u00e3o ou vida \u00fatil principalmente devido ao desgaste, e n\u00e3o a trincas, os a\u00e7os para trabalho a frio de alta resist\u00eancia ao desgaste geralmente s\u00e3o mais adequados. D2, D3 e D6 s\u00e3o escolhas t\u00edpicas para desgaste abrasivo severo.\n      <\/p>\n      <p>\n        Os a\u00e7os ferramenta de alta tenacidade tamb\u00e9m n\u00e3o s\u00e3o ideais quando a dureza de trabalho precisa permanecer acima de 60 HRC. A maioria dos a\u00e7os com foco em tenacidade s\u00e3o selecionados pela resist\u00eancia \u00e0 fratura, e n\u00e3o pela dureza m\u00e1xima.\n      <\/p>\n      <p>\n        Para cortes de alta velocidade, a tenacidade por si s\u00f3 n\u00e3o basta. O a\u00e7o deve ser selecionado pela sua dureza a quente e dureza a frio.\n      <\/p>\n\n      <div class=\"aobo-note-box\">\n        <p>\n          Para problemas de fissuras e fraturas, a tenacidade deve ser o primeiro fator de sele\u00e7\u00e3o. Para desgaste abrasivo severo, a\u00e7os para trabalho a frio de alta resist\u00eancia ao desgaste geralmente s\u00e3o a melhor op\u00e7\u00e3o.\n        <\/p>\n      <\/div>\n\n    <\/main>\n\n    <section class=\"aobo-final-cta\">\n      <div>\n        <h2>Precisa de fornecimento em grande quantidade de a\u00e7o ferramenta de alta tenacidade?<\/h2>\n        <p>\n          A Aobo Steel fornece barras redondas e planas de a\u00e7o ferramenta de alta tenacidade, como S7, S1, L6, H11, H13 e outros, para pedidos industriais em grande quantidade. Envie-nos a especifica\u00e7\u00e3o, o tamanho, a quantidade e a aplica\u00e7\u00e3o desejadas.\n        <\/p>\n      <\/div>\n      <a class=\"aobo-btn aobo-btn-inquiry hs-cta-trigger-button hs-cta-trigger-button-230288465624\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n    <\/section>\n\n  <\/div>\n<\/section>","protected":false},"excerpt":{"rendered":"<p>Tool Steel Selection by Failure Mode High-Toughness Tool Steels for Cracking and Fracture Resistance High-toughness tool steels are used when cracking, chipping, or sudden fracture are the primary failure modes. In these applications, the tool usually breaks before it wears out, so the material must absorb impact loads, resist stress concentrations, and slow crack growth. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15628,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"","_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-15627","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6.1 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>High Toughness Tool Steels for Cracking Resistance | Aobo Steel - AoboSteel<\/title>\n<meta name=\"description\" content=\"Choose high-toughness tool steels for cracking, chipping, impact breakage, and fracture resistance. 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