{"id":15620,"date":"2026-05-23T08:58:06","date_gmt":"2026-05-23T00:58:06","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=15620"},"modified":"2026-06-25T10:47:51","modified_gmt":"2026-06-25T02:47:51","slug":"tool-steels-for-chipping-resistance","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/tool-steels-for-chipping-resistance\/","title":{"rendered":"A\u00e7os para ferramentas com resist\u00eancia a lascamento | A\u00e7os para ferramentas resistentes a impactos"},"content":{"rendered":"<section class=\"aobo-shock-page\">\n\n  <style>\n    .aobo-shock-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: 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  .aobo-related-grid {\n        grid-template-columns: 1fr;\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 para ferramentas com resist\u00eancia a lascas<\/h1>\n      <p>\n        Os a\u00e7os-ferramenta resistentes a choques s\u00e3o utilizados em ferramentas que falham por impacto, lascamento, fissuras ou fraturas repentinas. A maioria dos a\u00e7os-ferramenta resistentes a choques pertence \u00e0 s\u00e9rie S da AISI, valorizada principalmente pela tenacidade, e n\u00e3o pela m\u00e1xima resist\u00eancia ao desgaste abrasivo.\n      <\/p>\n    <\/header>\n\n    <section class=\"aobo-product-strip\" aria-label=\"A\u00e7os para ferramentas resistentes a impactos dispon\u00edveis na Aobo Steel.\">\n      <h2>A\u00e7os para ferramentas resistentes a impactos dispon\u00edveis na Aobo Steel.<\/h2>\n      <p class=\"aobo-strip-intro\">\n        A Aobo Steel fornece a\u00e7o ferramenta da s\u00e9rie S, resistente a choques, em barras redondas e planas a granel, para pun\u00e7\u00f5es, cinz\u00e9is, l\u00e2minas de corte, ferramentas pneum\u00e1ticas, ferramentas de conforma\u00e7\u00e3o e ferramentas industriais sujeitas a impactos.\n      <\/p>\n\n      <div class=\"aobo-product-grid\">\n        <article class=\"aobo-product-card\">\n          <div class=\"aobo-product-image\">\n            <img src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/09\/S1-tool-steel.avif\" alt=\"A\u00e7o ferramenta S1 fornecido pela Aobo Steel\" loading=\"lazy\" decoding=\"async\">\n          <\/div>\n          <h3>S1 | 1,2550<\/h3>\n          <p class=\"aobo-card-note\">A\u00e7o de tungst\u00eanio resistente a choques, com melhor dureza a quente, para cinz\u00e9is, pun\u00e7\u00f5es, estampagem a quente, matrizes de cabe\u00e7ote de parafusos a quente e insertos de forjamento por estampagem.<\/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 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 src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/S7.webp\" alt=\"Barra de a\u00e7o ferramenta S7\" loading=\"lazy\" decoding=\"async\">\n          <\/div>\n          <h3>S7 | 1,2355<\/h3>\n          <p class=\"aobo-card-note\">A\u00e7o de choque endurec\u00edvel ao ar com alta tenacidade, boa estabilidade dimensional e tratamento t\u00e9rmico mais seguro para ferramentas de impacto complexas.<\/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      <\/div>\n    <\/section>\n\n    <main class=\"aobo-article\">\n\n      <p>\n        A maioria dos a\u00e7os-ferramenta resistentes a choques pertence \u00e0 s\u00e9rie AISI S, valorizados principalmente pela tenacidade em vez da m\u00e1xima resist\u00eancia ao desgaste abrasivo. S\u00e3o utilizados em pun\u00e7\u00f5es, cinz\u00e9is, l\u00e2minas de corte, ferramentas pneum\u00e1ticas, ferramentas de conforma\u00e7\u00e3o e outras aplica\u00e7\u00f5es expostas a choques mec\u00e2nicos repetidos.\n      <\/p>\n      <p>\n        Em compara\u00e7\u00e3o com a\u00e7os para trabalho a frio de alto carbono, como o D2 ou o D3, os a\u00e7os resistentes a choques cont\u00eam menos carbono e menos carbonetos grandes. Isso reduz a fragilidade e melhora a resist\u00eancia \u00e0 fratura sob carga de impacto. A desvantagem \u00e9 uma menor resist\u00eancia ao desgaste abrasivo.\n      <\/p>\n\n      <h2>A\u00e7os para ferramentas resistentes a choques recomendados<\/h2>\n\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr>\n              <th>Grau<\/th>\n              <th>Recurso principal<\/th>\n              <th>Melhor uso<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>S1<\/td><td>A\u00e7o de tungst\u00eanio resistente a choques com melhor dureza a quente.<\/td><td>Cinz\u00e9is, pun\u00e7\u00f5es, l\u00e2minas de corte, puncionamento a quente, matrizes para cabe\u00e7otes de parafusos a quente, insertos para forjamento por estampagem<\/td><\/tr>\n            <tr><td>S2<\/td><td>A\u00e7o de choque endurec\u00edvel em \u00e1gua para ferramentas de impacto simples<\/td><td>Cinz\u00e9is manuais, ferramentas pneum\u00e1ticas, ferramentas de impacto<\/td><\/tr>\n            <tr><td>S5<\/td><td>A\u00e7o de choque sil\u00edcio-mangan\u00eas com alt\u00edssima tenacidade<\/td><td>Quebra-concreto, pun\u00e7\u00f5es pesadas, cinz\u00e9is para lascar concreto, ferramentas de impacto para servi\u00e7o pesado<\/td><\/tr>\n            <tr><td>S7<\/td><td>A\u00e7o de choque endurec\u00edvel ao ar com alta tenacidade e tratamento t\u00e9rmico mais seguro.<\/td><td>Pun\u00e7\u00f5es, l\u00e2minas de corte, matrizes de conforma\u00e7\u00e3o, matrizes para moldes de pl\u00e1stico, ferramentas para trabalho a quente de m\u00e9dia temperatura.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <h2>Por que esses a\u00e7os para ferramentas resistem a choques<\/h2>\n      <p>\n        Os a\u00e7os para ferramentas resistentes a choques utilizam um teor moderado de carbono, geralmente em torno de 0,40% a 0,65%. Este valor \u00e9 inferior ao dos a\u00e7os para trabalho a frio de alta resist\u00eancia ao desgaste.\n      <\/p>\n      <p>\n        Um menor teor de carbono reduz a forma\u00e7\u00e3o de carbonetos grandes e duros no a\u00e7o. Embora esses carbonetos melhorem a resist\u00eancia ao desgaste, eles tamb\u00e9m podem iniciar trincas sob impacto. Limitar o volume de carbonetos aumenta a tenacidade e a resist\u00eancia \u00e0 fratura de a\u00e7os-ferramenta resistentes a choques.\n      <\/p>\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 da liga<\/th>\n              <th>Efeito no desempenho<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>S1<\/td><td>Tungst\u00eanio<\/td><td>Melhora a dureza a quente e proporciona maior resist\u00eancia ao desgaste do que os a\u00e7os de choque b\u00e1sicos.<\/td><\/tr>\n            <tr><td>S5<\/td><td>Sil\u00edcio e mangan\u00eas<\/td><td>Melhora a ductilidade, o limite el\u00e1stico e a resist\u00eancia a impactos severos.<\/td><\/tr>\n            <tr><td>S7<\/td><td>Cromo e molibd\u00eanio<\/td><td>Melhora a temperabilidade, a tenacidade e a seguran\u00e7a do tratamento t\u00e9rmico.<\/td><\/tr>\n            <tr><td>S2<\/td><td>Composi\u00e7\u00e3o para endurecimento em \u00e1gua<\/td><td>Adequado para ferramentas de impacto simples, mas menos seguro para formatos complexos.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <div class=\"aobo-note-box\">\n        <p>\n          Para ferramentas grandes ou complexas, geralmente s\u00e3o preferidas ligas com comportamento de endurecimento mais seguro, pois a tens\u00e3o de t\u00eampera pode causar distor\u00e7\u00e3o ou fissuras.\n        <\/p>\n      <\/div>\n\n      <h2>Aplica\u00e7\u00f5es e Sele\u00e7\u00e3o de Notas<\/h2>\n\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr>\n              <th>Problema de aplica\u00e7\u00e3o\/falha<\/th>\n              <th>Nota recomendada<\/th>\n              <th>Motivo da Sele\u00e7\u00e3o<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>cinz\u00e9is de m\u00e3o<\/td><td>S1, S2, S5<\/td><td>Requer resist\u00eancia ao impacto e resist\u00eancia moderada ao desgaste.<\/td><\/tr>\n            <tr><td>Cinz\u00e9is pneum\u00e1ticos<\/td><td>S2, S5<\/td><td>A carga de impacto repetida \u00e9 a principal condi\u00e7\u00e3o de trabalho.<\/td><\/tr>\n            <tr><td>Rompedores de concreto<\/td><td>S5, S7<\/td><td>Necessita de alt\u00edssima resist\u00eancia a impactos severos.<\/td><\/tr>\n            <tr><td>perfuratrizes de rocha e ferramentas de lascamento<\/td><td>S5<\/td><td>A alta resist\u00eancia a impactos \u00e9 mais importante do que o controle dimensional preciso.<\/td><\/tr>\n            <tr><td>Soco pesado<\/td><td>S5, S7<\/td><td>Reduz lascas e rachaduras sob cargas de alto impacto.<\/td><\/tr>\n            <tr><td>Ferramentas de perfura\u00e7\u00e3o<\/td><td>S1, S7<\/td><td>Necessita de resist\u00eancia com melhor estabilidade de borda.<\/td><\/tr>\n            <tr><td>A desnatura\u00e7\u00e3o a frio morre<\/td><td>S5, S7<\/td><td>Suporta carga compressiva e impacto durante a conforma\u00e7\u00e3o.<\/td><\/tr>\n            <tr><td>matrizes de estampagem<\/td><td>S5, S7<\/td><td>Adequado para choques mec\u00e2nicos repetidos em opera\u00e7\u00f5es de conforma\u00e7\u00e3o.<\/td><\/tr>\n            <tr><td>Matrizes de cunhagem<\/td><td>S5, S7<\/td><td>Necessita de for\u00e7a e resist\u00eancia sob alta press\u00e3o.<\/td><\/tr>\n            <tr><td>L\u00e2minas de cisalhamento pesadas<\/td><td>S1, S5, S7<\/td><td>Utilizado quando o lascamento ou quebra da l\u00e2mina representam um problema maior do que o desgaste.<\/td><\/tr>\n            <tr><td>L\u00e2minas de corte a quente<\/td><td>S1, S7<\/td><td>Requer tenacidade e dureza moderada a quente.<\/td><\/tr>\n            <tr><td>Ferramentas de puncionamento a quente<\/td><td>S1, S7<\/td><td>Adequado para ferramentas de impacto que operam em temperaturas elevadas.<\/td><\/tr>\n            <tr><td>Matrizes de cabe\u00e7ote Hot Bolt<\/td><td>S1<\/td><td>O tungst\u00eanio melhora a dureza a quente para esse tipo de trabalho de choque.<\/td><\/tr>\n            <tr><td>Inser\u00e7\u00f5es de matriz para forjamento por estampagem<\/td><td>S1, S7<\/td><td>Necessita de resist\u00eancia a impactos repetidos e calor moderado.<\/td><\/tr>\n            <tr><td>Matrizes para moldes de pl\u00e1stico que exigem alta resist\u00eancia<\/td><td>S7<\/td><td>\u00datil em situa\u00e7\u00f5es onde rachaduras no molde ou cargas de impacto s\u00e3o uma preocupa\u00e7\u00e3o.<\/td><\/tr>\n            <tr><td>Componentes de m\u00e1quinas submetidos a impactos<\/td><td>S7<\/td><td>Adequado para pe\u00e7as como garras de mandril, pin\u00e7as, pontas de chave de fenda, pe\u00e7as de embreagem e linguetas.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <h2>Quando os a\u00e7os-ferramenta resistentes a impactos n\u00e3o s\u00e3o a escolha certa<\/h2>\n      <p>\n        A\u00e7os-ferramenta resistentes a choques n\u00e3o devem ser usados quando o desgaste abrasivo for o principal modo de falha. Para longas s\u00e9ries de produ\u00e7\u00e3o, como corte, estampagem profunda e estampagem de alto desgaste, <a href=\"https:\/\/aobosteel.com\/pt\/d2-tool-steel\/\">D2<\/a>, <a href=\"https:\/\/aobosteel.com\/pt\/d3-tool-steel\/\">D3<\/a>, <a href=\"https:\/\/aobosteel.com\/pt\/a2-tool-steel\/\">A2<\/a>, A\u00e7os para ferramentas de trabalho a frio, ou outros a\u00e7os para trabalho a frio, s\u00e3o geralmente mais adequados.\n      <\/p>\n      <p>\n        Eles tamb\u00e9m n\u00e3o s\u00e3o adequados para ferramentas de corte de alta velocidade, como brocas, fresas ou ferramentas de torno. Essas aplica\u00e7\u00f5es exigem a\u00e7os r\u00e1pidos.\n      <\/p>\n      <p>\n        Para forjamento a quente severo, extrus\u00e3o a quente, fundi\u00e7\u00e3o sob press\u00e3o ou servi\u00e7o cont\u00ednuo em alta temperatura, utilize a\u00e7os da s\u00e9rie H, como: <a href=\"https:\/\/aobosteel.com\/pt\/h11-tool-steel\/\">H11<\/a> e <a href=\"https:\/\/aobosteel.com\/pt\/h13-tool-steel\/\">H13<\/a> em vez de.\n      <\/p>\n\n      <div class=\"aobo-note-box\">\n        <p>\n          O controle do tratamento t\u00e9rmico tamb\u00e9m \u00e9 importante. Alguns a\u00e7os resistentes a choques podem sofrer descarboneta\u00e7\u00e3o superficial se a atmosfera do forno for mal controlada. Para ferramentas cr\u00edticas, o tratamento t\u00e9rmico em atmosfera controlada ou a v\u00e1cuo \u00e9 mais seguro.\n        <\/p>\n      <\/div>\n\n    <\/main>\n\n    <section class=\"aobo-related-pages\" aria-label=\"P\u00e1ginas relacionadas \u00e0 resist\u00eancia \u00e0 falha do a\u00e7o ferramenta\">\n      <h2>Guias de sele\u00e7\u00e3o de a\u00e7o ferramenta relacionados<\/h2>\n      <p class=\"aobo-related-intro\">Compare outros modos comuns de falha de ferramentas e as propriedades do a\u00e7o usado para resistir a eles.<\/p>\n      <div class=\"aobo-related-grid\">\n        <a class=\"aobo-related-link\" href=\"https:\/\/aobosteel.com\/pt\/abrasive-wear-resistant-tool-steels\/\">\n          <span class=\"aobo-related-name\">Desgaste abrasivo<\/span>\n          <span class=\"aobo-related-desc\">Superf\u00edcie gradualmente arranhada ou sulcada por part\u00edculas duras.<\/span>\n        <\/a>\n        <a class=\"aobo-related-link\" href=\"https:\/\/aobosteel.com\/pt\/tool-steels-for-cracking-resistance\/\">\n          <span class=\"aobo-related-name\">Rachaduras<\/span>\n          <span class=\"aobo-related-desc\">Fraturas transversais causadas por sobrecarga ou concentra\u00e7\u00e3o de tens\u00e3o<\/span>\n        <\/a>\n        <a class=\"aobo-related-link\" href=\"https:\/\/aobosteel.com\/pt\/plastic-deformation-resistant-tool-steels\/\">\n          <span class=\"aobo-related-name\">Deforma\u00e7\u00e3o Pl\u00e1stica<\/span>\n          <span class=\"aobo-related-desc\">Altera\u00e7\u00e3o permanente da forma quando a ferramenta cede sob a carga de trabalho.<\/span>\n        <\/a>\n        <a class=\"aobo-related-link\" href=\"https:\/\/aobosteel.com\/pt\/thermal-fatigue-resistant-tool-steels\/\">\n          <span class=\"aobo-related-name\">Fadiga T\u00e9rmica<\/span>\n          <span class=\"aobo-related-desc\">Rachaduras superficiais causadas por ciclos repetidos de aquecimento e resfriamento.<\/span>\n        <\/a>\n        <a class=\"aobo-related-link\" href=\"https:\/\/aobosteel.com\/pt\/adhesive-wear-resistant-tool-steels\/\">\n          <span class=\"aobo-related-name\">Desgaste e atrito adesivos<\/span>\n          <span class=\"aobo-related-desc\">Transfer\u00eancia de material e ader\u00eancia superficial entre superf\u00edcies de contato<\/span>\n        <\/a>\n      <\/div>\n    <\/section>\n\n    <section class=\"aobo-final-cta\">\n      <div>\n        <h2>Precisa de fornecimento de a\u00e7o ferramenta resistente a impactos em grandes quantidades?<\/h2>\n        <p>\n          A Aobo Steel fornece barras redondas e chatas de a\u00e7o ferramenta S1, S7 e outros a\u00e7os resistentes a impactos para aplica\u00e7\u00f5es de choque. 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 popmake-16052\" 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 Tool Steels for Chipping Resistance Shock-resistant tool steels are used for tools that fail by impact, chipping, cracking, or sudden fracture. Most shock-resistant tool steels belong to the AISI S-series, valued primarily for toughness rather than maximum abrasive wear resistance. Shock-Resistant Tool Steels Available from Aobo Steel Aobo Steel [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15621,"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-15620","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>Tool Steels for Chipping Resistance|Shock-Resistant Tool Steels - AoboSteel<\/title>\n<meta name=\"description\" content=\"Compare shock-resistant tool steels for impact, chipping, cracking, shear blades, punches, chisels, and forming tools. 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Saiba quando escolher S1, S5 ou S7.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/aobosteel.com\/pt\/tool-steels-for-chipping-resistance\/","og_locale":"pt_BR","og_type":"article","og_title":"Tool Steels for Chipping Resistance|Shock-Resistant Tool Steels","og_description":"Compare shock-resistant tool steels for impact, chipping, cracking, shear blades, punches, chisels, and forming tools. 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