{"id":15620,"date":"2026-05-23T08:58:06","date_gmt":"2026-05-23T00:58:06","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=15620"},"modified":"2026-05-23T11:09:56","modified_gmt":"2026-05-23T03:09:56","slug":"tool-steels-for-chipping-resistance","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/es\/tool-steels-for-chipping-resistance\/","title":{"rendered":"Shock-Resistant Tool Steels: S1, S5, S7 Grade Selection"},"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: var(--aobo-text);\n      line-height: 1.7;\n      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 .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\">Tool Steel Selection by Failure Mode<\/span>\n      <h1>Tool Steels for Chipping Resistance<\/h1>\n      <p>\n        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.\n      <\/p>\n    <\/header>\n\n    <section class=\"aobo-product-strip\" aria-label=\"Available shock-resistant tool steels from Aobo Steel\">\n      <h2>Shock-Resistant Tool Steels Available from Aobo Steel<\/h2>\n      <p class=\"aobo-strip-intro\">\n        Aobo Steel supplies S-series shock-resisting tool steel in bulk round bar and flat bar for punches, chisels, shear blades, pneumatic tools, forming tools, and impact-loaded industrial tooling.\n      <\/p>\n\n      <div class=\"aobo-product-grid\">\n        <article class=\"aobo-product-card\">\n          <h3>S1 | 1.2550<\/h3>\n          <p class=\"aobo-card-note\">Tungsten shock-resisting steel with better hot hardness for chisels, punches, hot punching, hot bolt header dies, and drop-forge inserts.<\/p>\n          <div class=\"aobo-buttons\">\n            <a class=\"aobo-btn aobo-btn-detail\" href=\"https:\/\/aobosteel.com\/es\/s1-tool-steel\/\">Ver detalles<\/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>S7 | 1.2355<\/h3>\n          <p class=\"aobo-card-note\">Air-hardening shock steel with high toughness, good dimensional stability, and safer heat treatment for complex impact tools.<\/p>\n          <div class=\"aobo-buttons\">\n            <a class=\"aobo-btn aobo-btn-detail\" href=\"https:\/\/aobosteel.com\/es\/s7-tool-steel\/\">Ver detalles<\/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      <\/div>\n    <\/section>\n\n    <main class=\"aobo-article\">\n\n      <p>\n        Most shock-resistant tool steels belong to the AISI S-series, valued primarily for toughness rather than maximum abrasive wear resistance. They are used for punches, chisels, shear blades, pneumatic tools, forming tools, and other applications exposed to repeated mechanical shock.\n      <\/p>\n      <p>\n        Compared with high-carbon cold work steels such as D2 or D3, shock-resistant grades contain less carbon and fewer large carbides. This reduces brittleness and improves resistance to fracture under impact load. The trade-off is lower abrasive wear resistance.\n      <\/p>\n\n      <h2>Recommended Shock-Resistant Tool Steels<\/h2>\n\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr>\n              <th>Grado<\/th>\n              <th>Caracter\u00edstica principal<\/th>\n              <th>Best Use Direction<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>S1<\/td><td>Tungsten shock-resisting steel with better hot hardness<\/td><td>Chisels, punches, shear blades, hot punching, hot bolt header dies, drop-forge inserts<\/td><\/tr>\n            <tr><td>S2<\/td><td>Water-hardening shock steel for simple impact tools<\/td><td>Hand chisels, pneumatic tools, impact tools<\/td><\/tr>\n            <tr><td>S5<\/td><td>Silicon-manganese shock steel with very high toughness<\/td><td>Concrete breakers, heavy punches, chipping chisels, heavy-duty impact tools<\/td><\/tr>\n            <tr><td>S7<\/td><td>Air-hardening shock steel with high toughness and safer heat treatment<\/td><td>Punches, shear blades, forming dies, plastic mold dies, medium hot-work tools<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <h2>Why These Tool Steels Resist Shock<\/h2>\n      <p>\n        Shock-resistant tool steels use moderate carbon content, usually around 0.40% to 0.65%. This is lower than that of high-wear cold-work steels.\n      <\/p>\n      <p>\n        Lower carbon reduces the formation of large, hard carbides in steel. While these carbides improve wear resistance, they can also initiate cracks under impact. Limiting carbide volume enhances the toughness and fracture resistance of shock-resistant tool steels.\n      <\/p>\n\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr>\n              <th>Grado<\/th>\n              <th>Alloy Direction<\/th>\n              <th>Performance Effect<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>S1<\/td><td>Tungsteno<\/td><td>Improves hot hardness and gives better wear resistance than basic shock steels<\/td><\/tr>\n            <tr><td>S5<\/td><td>Silicon and manganese<\/td><td>Improves ductility, elastic limit, and heavy-impact resistance<\/td><\/tr>\n            <tr><td>S7<\/td><td>Chromium and molybdenum<\/td><td>Improves hardenability, toughness, and heat treatment safety<\/td><\/tr>\n            <tr><td>S2<\/td><td>Water-hardening composition<\/td><td>Suitable for simple impact tools, but less safe for complex shapes<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <div class=\"aobo-note-box\">\n        <p>\n          For large or complex tools, grades with safer hardening behavior are usually preferred because quench stress can cause distortion or cracking.\n        <\/p>\n      <\/div>\n\n      <h2>Solicitudes y selecci\u00f3n de grado<\/h2>\n\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr>\n              <th>Application \/ Failure Problem<\/th>\n              <th>Grado recomendado<\/th>\n              <th>Motivo de la selecci\u00f3n<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>Hand chisels<\/td><td>S1, S2, S5<\/td><td>Requires impact toughness and moderate wear resistance<\/td><\/tr>\n            <tr><td>Cinceles neum\u00e1ticos<\/td><td>S2, S5<\/td><td>Repeated impact load is the main working condition<\/td><\/tr>\n            <tr><td>Rompedores de hormig\u00f3n<\/td><td>S5, S7<\/td><td>Needs very high toughness under severe shock<\/td><\/tr>\n            <tr><td>Rock drills and chipping tools<\/td><td>S5<\/td><td>Heavy impact resistance is more important than fine dimensional control<\/td><\/tr>\n            <tr><td>Punzones de alta resistencia<\/td><td>S5, S7<\/td><td>Reduces chipping and cracking under high impact load<\/td><\/tr>\n            <tr><td>Piercing tools<\/td><td>S1, S7<\/td><td>Needs toughness with better edge stability<\/td><\/tr>\n            <tr><td>Cold-heading dies<\/td><td>S5, S7<\/td><td>Handles compressive load and impact during forming<\/td><\/tr>\n            <tr><td>Swaging dies<\/td><td>S5, S7<\/td><td>Suitable for repeated mechanical shock in forming operations<\/td><\/tr>\n            <tr><td>Troqueles de acu\u00f1aci\u00f3n<\/td><td>S5, S7<\/td><td>Needs strength and toughness under high pressure<\/td><\/tr>\n            <tr><td>Heavy shear blades<\/td><td>S1, S5, S7<\/td><td>Used when blade chipping or breakage is a bigger problem than wear<\/td><\/tr>\n            <tr><td>Cuchillas de corte calientes<\/td><td>S1, S7<\/td><td>Requires toughness plus moderate hot hardness<\/td><\/tr>\n            <tr><td>Herramientas de punzonado en caliente<\/td><td>S1, S7<\/td><td>Suitable for impact tools working at elevated temperature<\/td><\/tr>\n            <tr><td>Hot bolt header dies<\/td><td>S1<\/td><td>Tungsten improves hot hardness for this type of shock work<\/td><\/tr>\n            <tr><td>Drop-forge die inserts<\/td><td>S1, S7<\/td><td>Needs resistance to repeated impact and moderate heat<\/td><\/tr>\n            <tr><td>Plastic mold dies requiring high toughness<\/td><td>S7<\/td><td>Useful where mold cracking or impact load is a concern<\/td><\/tr>\n            <tr><td>Shock-loaded machine components<\/td><td>S7<\/td><td>Suitable for parts such as chuck jaws, collets, driver bits, clutch parts, and pawls<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <h2>When Shock-Resistant Tool Steels Are Not the Right Choice<\/h2>\n      <p>\n        Shock-resistant tool steels should not be used when abrasive wear is the main failure mode. For long production runs, such as blanking, deep drawing, and high-wear stamping, <a href=\"https:\/\/aobosteel.com\/es\/d2-tool-steel\/\">D2<\/a>, <a href=\"https:\/\/aobosteel.com\/es\/d3-tool-steel\/\">D3<\/a>, <a href=\"https:\/\/aobosteel.com\/es\/a2-tool-steel\/\">A2<\/a>, or other cold work tool steels are usually more suitable.\n      <\/p>\n      <p>\n        They are also not suitable for high-speed cutting tools, such as drills, milling cutters, or lathe tools. These applications require high-speed steels.\n      <\/p>\n      <p>\n        For severe hot forging, hot extrusion, die casting, or continuous high-temperature service, use H-series steels such as <a href=\"https:\/\/aobosteel.com\/es\/h11-tool-steel\/\">H11<\/a> y <a href=\"https:\/\/aobosteel.com\/es\/h13-tool-steel\/\">H13<\/a> instead.\n      <\/p>\n\n      <div class=\"aobo-note-box\">\n        <p>\n          Heat treatment control also matters. Some shock-resistant steels can suffer surface decarburization if the furnace atmosphere is poorly controlled. For critical tools, controlled atmosphere or vacuum heat treatment is safer.\n        <\/p>\n      <\/div>\n\n    <\/main>\n\n    <section class=\"aobo-final-cta\">\n      <div>\n        <h2>Need Bulk Shock-Resistant Tool Steel Supply?<\/h2>\n        <p>\n          Aobo Steel supplies S1, S7 and other shock-resisting tool steel round bar and flat bar for impact applications. Send your required grade, size, quantity, and application.\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 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":{"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-15620","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Shock-Resistant Tool Steels: S1, S5, S7 Grade Selection - 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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