{"id":14750,"date":"2026-04-20T09:51:15","date_gmt":"2026-04-20T01:51:15","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=14750"},"modified":"2026-06-25T15:39:23","modified_gmt":"2026-06-25T07:39:23","slug":"s7-vs-a2-tool-steel","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/s7-vs-a2-tool-steel\/","title":{"rendered":"A\u00e7o ferramenta S7 vs. A2: impacto ou desgaste? | Aobo Steel"},"content":{"rendered":"<section class=\"aobo-s7-a2-page\">\n  <style>\n    .aobo-s7-a2-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      line-height: 1.7;\n      background: transparent;\n      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diferentes problemas de ferramentas.<\/p>\n      <p>A liga S7 \u00e9 a melhor op\u00e7\u00e3o para impactos, lascas ou rachaduras. A liga A2 \u00e9 prefer\u00edvel para desgaste abrasivo, arredondamento de bordas ou perda de precis\u00e3o de corte.<\/p>\n    <\/header>\n\n    <section class=\"aobo-product-strip\" aria-label=\"Produtos de a\u00e7o ferramenta S7 e A2 da Aobo Steel\">\n      <h2>A\u00e7o ferramenta S7 e A2 dispon\u00edvel na Aobo Steel.<\/h2>\n      <p class=\"aobo-strip-intro\">A Aobo Steel fornece a\u00e7o ferramenta S7 resistente a choques e a\u00e7o ferramenta A2 para trabalho a frio com t\u00eampera ao ar, adequados para diferentes modos de falha em servi\u00e7o de ferramentas.<\/p>\n\n      <div class=\"aobo-product-grid\">\n        <article class=\"aobo-product-card\">\n          <div class=\"aobo-product-image\">\n            <img decoding=\"async\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/S7.webp\" alt=\"A\u00e7o ferramenta S7 fornecido pela Aobo Steel\" loading=\"lazy\">\n          <\/div>\n          <h3>S7 | 1,2355<\/h3>\n          <p class=\"aobo-card-note\">A\u00e7o ferramenta resistente a impactos para pun\u00e7\u00f5es, cinz\u00e9is, conjuntos de rebites, pontas de chave de fenda e ferramentas propensas a rachaduras ou quebras.<\/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 popmake-16052\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n          <\/div>\n        <\/article>\n\n        <article class=\"aobo-product-card\">\n          <div class=\"aobo-product-image\">\n            <img decoding=\"async\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/03\/A2-MATERIAL.webp\" alt=\"A\u00e7o ferramenta A2 fornecido pela Aobo Steel\" loading=\"lazy\">\n          <\/div>\n          <h3>A2 | 1,2363 | SKD12<\/h3>\n          <p class=\"aobo-card-note\">A\u00e7o ferramenta para trabalho a frio com t\u00eampera ao ar, para melhor resist\u00eancia ao desgaste, estabilidade dimensional, reten\u00e7\u00e3o de fio, matrizes, calibradores e ferramentas de precis\u00e3o.<\/p>\n          <div class=\"aobo-buttons\">\n            <a class=\"aobo-btn aobo-btn-detail\" href=\"https:\/\/aobosteel.com\/pt\/a2-tool-steel\/\">Ver detalhes<\/a>\n            <a class=\"aobo-btn aobo-btn-inquiry popmake-16052\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n          <\/div>\n        <\/article>\n      <\/div>\n    <\/section>\n\n    <main class=\"aobo-article\">\n      <p>Em termos pr\u00e1ticos, o a\u00e7o S7 \u00e9 a op\u00e7\u00e3o mais segura em termos de resist\u00eancia \u00e0 quebra. J\u00e1 o a\u00e7o A2 \u00e9 a op\u00e7\u00e3o mais robusta em termos de resist\u00eancia ao desgaste e controle dimensional.<\/p>\n\n      <h2>Compara\u00e7\u00e3o r\u00e1pida entre os a\u00e7os ferramenta S7 e A2.<\/h2>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead><tr><th>Ponto de compara\u00e7\u00e3o<\/th><th>A\u00e7o ferramenta S7<\/th><th>A\u00e7o para ferramentas A2<\/th><\/tr><\/thead>\n          <tbody>\n            <tr><td>tipo a\u00e7o ferramenta<\/td><td>A\u00e7o ferramenta resistente a choques<\/td><td>A\u00e7o ferramenta para trabalho a frio com endurecimento ao ar<\/td><\/tr>\n            <tr><td>Principal vantagem<\/td><td>Alta resist\u00eancia e durabilidade<\/td><td>Melhor resist\u00eancia ao desgaste e estabilidade dimensional.<\/td><\/tr>\n            <tr><td>Dureza de trabalho t\u00edpica<\/td><td>Aproximadamente 56-58 HRC<\/td><td>Aproximadamente 58-60 HRC<\/td><\/tr>\n            <tr><td>Resist\u00eancia ao desgaste<\/td><td>Inferior<\/td><td>Mais alto<\/td><\/tr>\n            <tr><td>Robustez<\/td><td>Mais alto<\/td><td>Moderado<\/td><\/tr>\n            <tr><td>Melhor para<\/td><td>Lascas, rachaduras, quebras<\/td><td>Desgaste, perda de borda, altera\u00e7\u00e3o dimensional<\/td><\/tr>\n            <tr><td>Principal compensa\u00e7\u00e3o<\/td><td>Desgasta-se mais rapidamente em ambientes abrasivos.<\/td><td>Pode lascar sob forte impacto.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <h2>Diferen\u00e7a na composi\u00e7\u00e3o qu\u00edmica<\/h2>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead><tr><th>Elemento<\/th><th>A\u00e7o ferramenta S7 \/ UNS T41907<\/th><th>A\u00e7o ferramenta A2 \/ UNS T30102<\/th><\/tr><\/thead>\n          <tbody>\n            <tr><td>Carbono<\/td><td>0.45-0.55%<\/td><td>0.95-1.05%<\/td><\/tr>\n            <tr><td>Cromo<\/td><td>3.00-3.50%<\/td><td>4.75-5.50%<\/td><\/tr>\n            <tr><td>Molibd\u00eanio<\/td><td>1.30-1.80%<\/td><td>0.90-1.40%<\/td><\/tr>\n            <tr><td>Mangan\u00eas<\/td><td>0.20-0.90%<\/td><td>M\u00e1x. 1,00%<\/td><\/tr>\n            <tr><td>Sil\u00edcio<\/td><td>0.20-1.00%<\/td><td>M\u00e1x. 0,50%<\/td><\/tr>\n            <tr><td>Van\u00e1dio<\/td><td>0,20-0,30%, quando especificado<\/td><td>0.15-0.50%<\/td><\/tr>\n            <tr><td>N\u00edquel<\/td><td>Geralmente n\u00e3o especificado<\/td><td>M\u00e1x. 0,30%<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>A composi\u00e7\u00e3o explica a diferen\u00e7a no comportamento do servi\u00e7o.<\/p>\n      <p>O a\u00e7o A2 cont\u00e9m muito mais carbono e cromo. Isso cria um suporte de carboneto mais forte, fazendo com que o a\u00e7o mantenha o fio por mais tempo em aplica\u00e7\u00f5es abrasivas de trabalho a frio.<\/p>\n      <p>O a\u00e7o S7 utiliza uma estrutura com menor teor de carbono e cromo. Ele sacrifica parte da resist\u00eancia ao desgaste do a\u00e7o A2, mas ganha em tenacidade. \u00c9 por isso que o S7 \u00e9 usado em aplica\u00e7\u00f5es onde a fratura representa um risco maior do que o desgaste gradual.<\/p>\n      <p>O maior teor de molibd\u00eanio no a\u00e7o S7 tamb\u00e9m contribui para a temperabilidade e oferece resist\u00eancia moderada ao calor. Ele suporta melhor exposi\u00e7\u00e3o limitada ao calor do que o a\u00e7o A2, mas n\u00e3o deve ser considerado um a\u00e7o ferramenta para trabalho a quente.<\/p>\n\n      <h2>Diferen\u00e7a de desempenho em uso<\/h2>\n      <p>A principal escolha n\u00e3o \u00e9 simplesmente a dureza. Trata-se do equil\u00edbrio entre tenacidade, resist\u00eancia ao desgaste e estabilidade dimensional.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead><tr><th>Fator de desempenho<\/th><th>Nota melhor<\/th><th>Significado pr\u00e1tico<\/th><\/tr><\/thead>\n          <tbody>\n            <tr><td>Resist\u00eancia a choques<\/td><td>S7<\/td><td>Melhor para impactos repetidos e cargas repentinas.<\/td><\/tr>\n            <tr><td>Resist\u00eancia a lascas<\/td><td>S7<\/td><td>Reduz a fratura das bordas em ferramentas de uso pesado.<\/td><\/tr>\n            <tr><td>resist\u00eancia ao desgaste abrasivo<\/td><td>A2<\/td><td>Mant\u00e9m a l\u00e2mina afiada por mais tempo.<\/td><\/tr>\n            <tr><td>Estabilidade dimensional<\/td><td>A2<\/td><td>Melhor op\u00e7\u00e3o para ferramentas de trabalho a frio de precis\u00e3o.<\/td><\/tr>\n            <tr><td>reten\u00e7\u00e3o de borda<\/td><td>A2<\/td><td>Melhor op\u00e7\u00e3o para ferramentas de corte, conforma\u00e7\u00e3o e desgaste.<\/td><\/tr>\n            <tr><td>Exposi\u00e7\u00e3o moderada ao calor<\/td><td>S7<\/td><td>Apresenta melhor desempenho que o A2 em condi\u00e7\u00f5es de calor limitado.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>O a\u00e7o S7 geralmente \u00e9 usado com dureza entre 56 e 58 HRC para manter a tenacidade necess\u00e1ria para aplica\u00e7\u00f5es de impacto. Aumentar demais a dureza pode comprometer a principal vantagem da escolha do a\u00e7o S7. Para mais informa\u00e7\u00f5es sobre a dureza do a\u00e7o S7, consulte [link para a documenta\u00e7\u00e3o]. <a href=\"https:\/\/aobosteel.com\/pt\/s7-tool-steel-hardness\/\">Dureza do a\u00e7o ferramenta S7: Faixa HRC, dureza HB recozida e dureza de trabalho.<\/a>.<\/p>\n      <p>A dureza A2 \u00e9 comumente utilizada entre 58 e 60 HRC devido \u00e0 sua \u00eanfase em resist\u00eancia ao desgaste, estabilidade do fio e controle dimensional. Para mais informa\u00e7\u00f5es sobre a dureza A2, consulte [link para a documenta\u00e7\u00e3o]. <a href=\"https:\/\/aobosteel.com\/pt\/a2-tool-steel-hardness\/\">Dureza do a\u00e7o ferramenta A2: Tabela HRC, dados de revenimento e dureza de trabalho<\/a>.<\/p>\n      <p>Ambos os a\u00e7os s\u00e3o de endurecimento ao ar. O A2 geralmente apresenta resultados mais previs\u00edveis para ferramentas de precis\u00e3o que exigem dureza uniforme e controle dimensional. O S7 tamb\u00e9m endurece com seguran\u00e7a, mas se\u00e7\u00f5es espessas necessitam de um controle mais rigoroso do tratamento t\u00e9rmico para evitar varia\u00e7\u00f5es de dureza.<\/p>\n\n      <h2>Sele\u00e7\u00e3o S7 vs A2 por aplica\u00e7\u00e3o<\/h2>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead><tr><th>Problema de aplica\u00e7\u00e3o ou ferramental<\/th><th>Melhor escolha<\/th><th>Motivo principal<\/th><\/tr><\/thead>\n          <tbody>\n            <tr><td>cinz\u00e9is de m\u00e3o<\/td><td>S7<\/td><td>impacto repetido<\/td><\/tr>\n            <tr><td>Cinz\u00e9is pneum\u00e1ticos<\/td><td>S7<\/td><td>Carga de choque elevada<\/td><\/tr>\n            <tr><td>Conjuntos de rebites e pontas de chave de fenda<\/td><td>S7<\/td><td>For\u00e7a de ataque<\/td><\/tr>\n            <tr><td>Soco pesado<\/td><td>S7<\/td><td>Resist\u00eancia a lascas e rachaduras<\/td><\/tr>\n            <tr><td>Ferramentas para conforma\u00e7\u00e3o a frio<\/td><td>S7<\/td><td>Tens\u00e3o de impacto e compress\u00e3o<\/td><\/tr>\n            <tr><td>L\u00e2minas de cisalhamento pesadas<\/td><td>S7<\/td><td>Carga de choque durante o corte<\/td><\/tr>\n            <tr><td>Soqueamento a quente moderado ou tosquia a quente<\/td><td>S7<\/td><td>Melhor resist\u00eancia ao calor moderado do que o A2.<\/td><\/tr>\n            <tr><td>Matrizes de corte<\/td><td>A2<\/td><td>Melhor resist\u00eancia ao desgaste<\/td><\/tr>\n            <tr><td>Matrizes de conforma\u00e7\u00e3o<\/td><td>A2<\/td><td>Resist\u00eancia ao desgaste e estabilidade dimensional<\/td><\/tr>\n            <tr><td>Matrizes de corte<\/td><td>A2<\/td><td>reten\u00e7\u00e3o de borda<\/td><\/tr>\n            <tr><td>Matrizes de lamina\u00e7\u00e3o de roscas<\/td><td>A2<\/td><td>resist\u00eancia ao desgaste superficial<\/td><\/tr>\n            <tr><td>Ferramentas de cunhagem<\/td><td>A2<\/td><td>Estabilidade da superf\u00edcie de trabalho<\/td><\/tr>\n            <tr><td>Man\u00f4metros e buchas<\/td><td>A2<\/td><td>Resist\u00eancia ao desgaste e controle de tamanho<\/td><\/tr>\n            <tr><td>Ferramentas de precis\u00e3o para trabalho a frio<\/td><td>A2<\/td><td>Melhor estabilidade dimensional<\/td><\/tr>\n            <tr><td>A ferramenta lasca ou racha antes de se desgastar.<\/td><td>S7<\/td><td>\u00c9 preciso mais resist\u00eancia.<\/td><\/tr>\n            <tr><td>A ferramenta permanece intacta, mas se desgasta muito rapidamente.<\/td><td>A2<\/td><td>\u00c9 necess\u00e1ria maior resist\u00eancia ao desgaste.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <h2>Graus equivalentes para compras<\/h2>\n      <p>Ap\u00f3s a escolha do material, a pr\u00f3xima quest\u00e3o \u00e9 a especifica\u00e7\u00e3o. A especifica\u00e7\u00e3o A2 geralmente \u00e9 mais f\u00e1cil de identificar em diferentes normas internacionais. A especifica\u00e7\u00e3o S7 requer mais aten\u00e7\u00e3o, pois algumas refer\u00eancias equivalentes s\u00e3o usadas de forma inconsistente em diferentes mercados.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead><tr><th>Padr\u00e3o\/Sistema<\/th><th>A\u00e7o para ferramentas A2<\/th><th>A\u00e7o ferramenta S7<\/th><\/tr><\/thead>\n          <tbody>\n            <tr><td>AISI \/ SAE<\/td><td>A2<\/td><td>S7<\/td><\/tr>\n            <tr><td>ONU<\/td><td>T30102<\/td><td>T41907<\/td><\/tr>\n            <tr><td>DIN \/ W.Nr.<\/td><td>1.2363<\/td><td>Frequentemente referenciado como 1.2355 \/ 50CrMoV13-15<\/td><\/tr>\n            <tr><td>JIS<\/td><td>SKD12<\/td><td>N\u00e3o existe um equivalente direto em JIS de uso comum.<\/td><\/tr>\n            <tr><td>BS<\/td><td>BA2<\/td><td>N\u00e3o existe um equivalente direto amplamente utilizado na norma BS.<\/td><\/tr>\n            <tr><td>AFNOR<\/td><td>Z100CDV5<\/td><td>N\u00e3o existe um equivalente direto amplamente utilizado para a norma AFNOR.<\/td><\/tr>\n            <tr><td>SS \/ Su\u00e9cia<\/td><td>2260<\/td><td>N\u00e3o existe um equivalente direto em a\u00e7o inoxid\u00e1vel amplamente utilizado.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>A norma S7 corresponde \u00e0s normas AISI S7 e UNS T41907. Frequentemente, \u00e9 referenciada \u00e0 norma DIN 50CrMoV13-15 (aproximadamente 1.2355), mas n\u00e3o existe um equivalente direto amplamente utilizado nas normas JIS, BS ou AFNOR. Para compras, especifique AISI S7 \/ UNS T41907 e confirme a composi\u00e7\u00e3o qu\u00edmica no certificado de fabrica\u00e7\u00e3o.<\/p>\n\n      <h2>Recomenda\u00e7\u00f5es finais de sele\u00e7\u00e3o<\/h2>\n      <div class=\"aobo-choice-grid\">\n        <article class=\"aobo-choice-card\">\n          <h3>Escolha S7 para risco de quebra<\/h3>\n          <p>O a\u00e7o S7 costuma ser mais adequado para ferramentas de impacto, pun\u00e7\u00f5es, cinz\u00e9is, conjuntos de rebites e ferramentas propensas a rachaduras ou quebras.<\/p>\n        <\/article>\n        <article class=\"aobo-choice-card\">\n          <h3>Escolha A2 para maior durabilidade e precis\u00e3o.<\/h3>\n          <p>O a\u00e7o A2 \u00e9 escolhido para matrizes de corte, matrizes de rebarba\u00e7\u00e3o, ferramentas de conforma\u00e7\u00e3o, calibradores, buchas e ferramentas de precis\u00e3o, onde a resist\u00eancia ao desgaste e o controle dimensional s\u00e3o fundamentais.<\/p>\n        <\/article>\n      <\/div>\n      <div class=\"aobo-note-box\">\n        <p>Em casos lim\u00edtrofes, concentre-se em qual falha tem o maior custo: quebra ou desgaste. Decida com base em qual risco \u00e9 mais relevante para a sua aplica\u00e7\u00e3o.<\/p>\n      <\/div>\n\n      <section class=\"aobo-related-pages\" aria-label=\"P\u00e1ginas relacionadas de compara\u00e7\u00e3o do a\u00e7o ferramenta S7\">\n        <h2>P\u00e1ginas relacionadas<\/h2>\n        <div class=\"aobo-related-grid\">\n          <a class=\"aobo-related-card\" href=\"https:\/\/aobosteel.com\/pt\/s7-tool-steel-vs-4140\/\">\n            <strong>S7 vs 4140<\/strong>\n            <span>A\u00e7o ferramenta resistente a impactos versus uma liga de uso geral de menor custo.<\/span>\n          <\/a>\n          <a class=\"aobo-related-card\" href=\"https:\/\/aobosteel.com\/pt\/d2-vs-s7-tool-steel\/\">\n            <strong>S7 vs D2<\/strong>\n            <span>Resist\u00eancia ao impacto versus maior resist\u00eancia ao desgaste.<\/span>\n          <\/a>\n        <\/div>\n      <\/section>\n    <\/main>\n\n    <section class=\"aobo-final-cta\">\n      <div>\n        <h2>Precisa de a\u00e7o ferramenta S7 ou A2 para sua aplica\u00e7\u00e3o de ferramentas?<\/h2>\n        <p>A Aobo Steel fornece a\u00e7o ferramenta S7 resistente a choques e a\u00e7o ferramenta A2 para trabalho a frio com t\u00eampera ao ar, para requisitos de impacto, desgaste e ferramentas de precis\u00e3o.<\/p>\n      <\/div>\n      <a class=\"aobo-btn popmake-16052\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n    <\/section>\n  <\/div>\n<\/section>","protected":false},"excerpt":{"rendered":"<p>Shock Resistance vs Wear Resistance S7 vs A2 Tool Steel: Impact Resistance or Wear Resistance? S7 and A2 are both air-hardening tool steels, but they are used for different tooling problems. S7 is best for impact, chipping, or cracking. A2 is preferable for abrasive wear, edge rounding, or loss of cutting accuracy. S7 and A2 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15277,"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-14750","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 vs A2 Tool Steel: Impact or Wear? | Aobo Steel<\/title>\n<meta name=\"description\" content=\"S7 resists impact and cracking; A2 resists abrasive wear and holds size. 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