{"id":14750,"date":"2026-04-20T09:51:15","date_gmt":"2026-04-20T01:51:15","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=14750"},"modified":"2026-09-18T17:49:17","modified_gmt":"2026-09-18T09:49:17","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":"\n<style>:root{\n    --aobo-accent:#2563eb; --aobo-accent-dark:#1e1e2e; --aobo-blue:#0c56d0; --aobo-blue-dark:#073b91;\n    --aobo-text:#333; --aobo-muted:#888; --aobo-border:#e5e7eb; --aobo-border-dark:#ddd;\n    --aobo-stripe:#f7f7f9; --aobo-hover:#e8f0fe; --aobo-radius:8px; --aobo-radius-sm:6px;\n    --aobo-orange:#f59e0b; --aobo-fill:#e9ecef;\n  }\n  *{box-sizing:border-box;}\n  html{-webkit-text-size-adjust:100%;}\n  body{margin:0;background:#fff;color:var(--aobo-text);\n    font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,\"Helvetica 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!important;text-transform: none !important}@media (max-width: 760px){.entry-content[class] h1{font-size: clamp(22px,6.4vw,min(34px,var(--h1-max,34px))) !important}.entry-content[class] h2{font-size: 25px !important}.entry-content[class] h3{font-size: 20px !important}.entry-content[class] h4{font-size: 17px !important}.entry-content[class] p,.entry-content[class] li{font-size: 16px !important}.entry-content[class] table th,.entry-content[class] table td{font-size: 14px !important;padding: 11px 12px !important}.entry-content[class] .aobo-hero{padding: 30px 22px}.entry-content[class] .aobo-final-cta{padding: 26px 22px}.entry-content[class] .aobo-final-cta .aobo-btn{width: 100%}}\n<\/style>\n<section class=\"aobo-ht-ref ts-props\">\n  <div class=\"aobo-wrap\">\n    <div class=\"ts-hero\">\n      <div class=\"ts-hero-top\">\n        <div class=\"ts-kicker\"><span><\/span>Shock Resistance vs Wear Resistance<\/div>\n        <h1 style=\"--h1-max:34px\">S7 vs A2 Tool Steel: Impact Resistance or Wear Resistance?<\/h1>\n        <p><a href=\"https:\/\/aobosteel.com\/air-hardening-tool-steel\/\">S7 and A2 are both air-hardening tool steels<\/a>, but they are used for different tooling problems.<\/p>\n        <p class=\"ts-p\"><a href=\"https:\/\/aobosteel.com\/tool-steels-for-chipping-resistance\/\">S7 is best for impact, chipping, or cracking<\/a>. A2 is preferable for abrasive wear, edge rounding, or loss of cutting accuracy.<\/p>\n      <\/div>\n      <div class=\"ts-tool-area\">\n        <h2 class=\"ts-h2\">S7 and A2 Tool Steel Available from Aobo Steel<\/h2>\n        <p class=\"ts-p\">Aobo Steel supplies <a href=\"https:\/\/aobosteel.com\/tool-steel-supplier-bulk-capability\/\">S7 shock-resisting tool steel and A2 air-hardening cold-work tool steel for different failure modes<\/a> in tooling service.<\/p>\n        <div class=\"ts-prod-grid\">\n        <div class=\"ts-prod\">\n          <div class=\"ts-prod-img\"><img decoding=\"async\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/S7.webp\" alt=\"S7 tool steel supplied by Aobo Steel\" loading=\"lazy\"><\/div>\n          <h3>S7 | 1.2355<\/h3>\n          <p>Shock-resisting tool steel for impact-loaded punches, chisels, rivet sets, driver bits, and tools prone to cracking or breakage.<\/p>\n          <div class=\"ts-prod-actions\">\n            <a class=\"ts-btn-main\" href=\"https:\/\/aobosteel.com\/s7-tool-steel\/\">View details<\/a>\n            <a class=\"popmake-16052\" href=\"javascript:void(0);\">Send inquiry<\/a>\n          <\/div>\n        <\/div>\n        <div class=\"ts-prod\">\n          <div class=\"ts-prod-img\"><img decoding=\"async\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/03\/A2-MATERIAL.webp\" alt=\"A2 tool steel supplied by Aobo Steel\" loading=\"lazy\"><\/div>\n          <h3>A2 | 1.2363 | SKD12<\/h3>\n          <p>Air-hardening cold-work tool steel for better wear resistance, dimensional stability, edge retention, dies, gauges, and precision tools.<\/p>\n          <div class=\"ts-prod-actions\">\n            <a class=\"ts-btn-main\" href=\"https:\/\/aobosteel.com\/a2-tool-steel\/\">View details<\/a>\n            <a class=\"popmake-16052\" href=\"javascript:void(0);\">Send inquiry<\/a>\n          <\/div>\n        <\/div>\n        <\/div>\n        <p class=\"ts-p\">In practical terms, S7 is the safer choice for resistance to breakage. A2 is the stronger choice for wear resistance and size control.<\/p>\n        <h2 class=\"ts-h2\">Quick Comparison of S7 and A2 Tool Steel<\/h2>\n        <div class=\"ts-table-wrap\"><table class=\"ts-table\">\n            <thead>\n              <tr><th>Comparison Point<\/th><th>S7 Tool Steel<\/th><th>A2 Tool Steel<\/th><\/tr>\n            <\/thead>\n            <tbody>\n            <tr><td class=\"ts-grade\">Tool steel type<\/td><td class=\"ts-num\">Shock-resisting tool steel<\/td><td class=\"ts-long\">Air-hardening cold-work tool steel<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Main advantage<\/td><td class=\"ts-num\">High toughness and shock resistance<\/td><td class=\"ts-long\">Better wear resistance and dimensional stability<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Typical working hardness<\/td><td class=\"ts-num\">About 56-58 HRC<\/td><td class=\"ts-long\">About 58-60 HRC<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Wear resistance<\/td><td class=\"ts-num\">Lower<\/td><td class=\"ts-long\">Higher<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Toughness<\/td><td class=\"ts-num\">Higher<\/td><td class=\"ts-long\">Moderate<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Better for<\/td><td class=\"ts-num\">Chipping, cracking, breakage<\/td><td class=\"ts-long\">Wear, edge loss, dimensional change<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Main trade-off<\/td><td class=\"ts-num\">Wears faster in abrasive service<\/td><td class=\"ts-long\">Can chip under heavy impact<\/td><\/tr>\n            <\/tbody>\n          <\/table>\n        <\/div>\n        <h2 class=\"ts-h2\">Chemical Composition Difference<\/h2>\n        <div class=\"ts-table-wrap\"><table class=\"ts-table\">\n            <thead>\n              <tr><th>Element<\/th><th>S7 Tool Steel \/ UNS T41907<\/th><th>A2 Tool Steel \/ UNS T30102<\/th><\/tr>\n            <\/thead>\n            <tbody>\n            <tr><td class=\"ts-grade\">Carbon<\/td><td class=\"ts-num\">0.45-0.55%<\/td><td class=\"ts-num\">0.95-1.05%<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Chromium<\/td><td class=\"ts-num\">3.00-3.50%<\/td><td class=\"ts-num\">4.75-5.50%<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Molybdenum<\/td><td class=\"ts-num\">1.30-1.80%<\/td><td class=\"ts-num\">0.90-1.40%<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Manganese<\/td><td class=\"ts-num\">0.20-0.90%<\/td><td class=\"ts-num\">Max. 1.00%<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Silicon<\/td><td class=\"ts-num\">0.20-1.00%<\/td><td class=\"ts-num\">Max. 0.50%<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Vanadium<\/td><td class=\"ts-num\">0.20-0.30%, when specified<\/td><td class=\"ts-num\">0.15-0.50%<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Nickel<\/td><td class=\"ts-num\">Usually not specified<\/td><td class=\"ts-num\">Max. 0.30%<\/td><\/tr>\n            <\/tbody>\n          <\/table>\n        <\/div>\n        <p class=\"ts-p\">The composition explains the difference in service behavior.<\/p>\n        <p class=\"ts-p\">A2 contains much more carbon and chromium. <a href=\"https:\/\/aobosteel.com\/tool-steel-carbide-types-and-hardness\/\">This creates stronger carbide support<\/a>, so the steel holds an edge better in abrasive cold-work applications.<\/p>\n        <p class=\"ts-p\">S7 uses a lower-carbon, lower-chromium design. It gives up part of A2&#8217;s wear resistance, but gains toughness. This is why S7 is used where fracture is a bigger risk than gradual wear.<\/p>\n        <p class=\"ts-p\">The higher molybdenum content in S7 also helps <a href=\"https:\/\/aobosteel.com\/tool-steel-hardenability-chart\/\">hardenability<\/a> and moderate heat resistance. It can handle limited heat exposure better than A2, but it should not be treated as a <a href=\"https:\/\/aobosteel.com\/hot-work-tool-steels\/\">hot-work tool steel<\/a>.<\/p>\n        <h2 class=\"ts-h2\">Performance Difference in Use<\/h2>\n        <p class=\"ts-p\">The main choice is not simply hardness. It is the balance between toughness, wear resistance, and dimensional stability.<\/p>\n        <div class=\"ts-table-wrap\"><table class=\"ts-table\">\n            <thead>\n              <tr><th>Performance Factor<\/th><th>Better Grade<\/th><th class=\"ds-text\">Practical Meaning<\/th><\/tr>\n            <\/thead>\n            <tbody>\n            <tr><td class=\"ts-grade\">Shock resistance<\/td><td class=\"ts-num\">S7<\/td><td class=\"ts-long ds-text\">Better for repeated impact and sudden loading.<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Chipping resistance<\/td><td class=\"ts-num\">S7<\/td><td class=\"ts-long ds-text\">Reduces edge fracture in heavy-duty tools.<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Abrasive wear resistance<\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long ds-text\">Holds the working edge longer.<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Dimensional stability<\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long ds-text\">Better for precision cold-work tooling.<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Edge retention<\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long ds-text\">Better for cutting, forming, and wear-dominated tools.<\/td><\/tr>\n            <tr><td class=\"ts-grade\">Moderate heat exposure<\/td><td class=\"ts-num\">S7<\/td><td class=\"ts-long ds-text\">Performs better than A2 under limited heat.<\/td><\/tr>\n            <\/tbody>\n          <\/table>\n        <\/div>\n        <p class=\"ts-p\">S7 is usually used at 56-58 HRC to maintain sufficient toughness for impact service. Pushing the hardness too high may reduce the main reason for choosing S7 in the first place. For more S7 hardness information, see <a href=\"https:\/\/aobosteel.com\/s7-tool-steel-rockwell-hardness-chart\/\">S7 Tool Steel Hardness: HRC Range, Annealed HB &amp; Working Hardness<\/a>.<\/p>\n        <p class=\"ts-p\">A2 is commonly used at <a href=\"https:\/\/aobosteel.com\/tool-steel-hardness-conversion-calculator\/\">58-60 HRC<\/a> because it emphasizes wear resistance, edge stability, and size control. For more A2 hardness information, see <a href=\"https:\/\/aobosteel.com\/a2-tool-steel-hardness\/\">A2 Tool Steel Hardness: HRC Chart, Tempering Data &amp; Working Hardness<\/a>.<\/p>\n        <p class=\"ts-p\">Both steels are air-hardening grades. A2 is generally more predictable for precision tools that need uniform hardness and dimensional control. S7 also hardens safely, but thick sections need more <a href=\"https:\/\/aobosteel.com\/tool-steel-heat-treatment-guide\/\">careful heat-treatment control<\/a> to avoid hardness variation.<\/p>\n        <h2 class=\"ts-h2\">S7 vs A2 Selection by Application<\/h2>\n        <div class=\"ts-table-wrap\"><table class=\"ts-table\">\n            <thead>\n              <tr><th>Application or Tooling Problem<\/th><th>Better Choice<\/th><th>Main Reason<\/th><\/tr>\n            <\/thead>\n            <tbody>\n            <tr><td class=\"ts-key\">Hand chisels<\/td><td class=\"ts-num\">S7<\/td><td class=\"ts-long\">Repeated impact<\/td><\/tr>\n            <tr><td class=\"ts-key\">Pneumatic chisels<\/td><td class=\"ts-num\">S7<\/td><td class=\"ts-long\">High shock loading<\/td><\/tr>\n            <tr><td class=\"ts-key\">Rivet sets and driver bits<\/td><td class=\"ts-num\">S7<\/td><td class=\"ts-long\">Striking force<\/td><\/tr>\n            <tr><td class=\"ts-key\">Heavy-duty punches<\/td><td class=\"ts-num\">S7<\/td><td class=\"ts-long\">Chipping and cracking resistance<\/td><\/tr>\n            <tr><td class=\"ts-key\"><a href=\"https:\/\/aobosteel.com\/tool-steel-for-cold-extrusion-cold-heading-thread-rolling-dies\/\">Cold heading tools<\/a><\/td><td class=\"ts-num\">S7<\/td><td class=\"ts-long\">Impact and compressive stress<\/td><\/tr>\n            <tr><td class=\"ts-key\"><a href=\"https:\/\/aobosteel.com\/tool-steel-for-shear-blades-slitter-knives-industrial-knives\/\">Heavy shear blades<\/a><\/td><td class=\"ts-num\">S7<\/td><td class=\"ts-long\">Shock loading during cutting<\/td><\/tr>\n            <tr><td class=\"ts-key\"><a href=\"https:\/\/aobosteel.com\/selection-of-tool-steel-for-hot-shear-blades\/\">Moderate hot punching or hot shearing<\/a><\/td><td class=\"ts-num\">S7<\/td><td class=\"ts-long\">Better moderate heat resistance than A2<\/td><\/tr>\n            <tr><td class=\"ts-key\"><a href=\"https:\/\/aobosteel.com\/tool-steel-for-stamping-blanking-piercing-dies\/\">Blanking dies<\/a><\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">Better wear resistance<\/td><\/tr>\n            <tr><td class=\"ts-key\"><a href=\"https:\/\/aobosteel.com\/tool-steel-for-forming-drawing-bending-dies\/\">Forming dies<\/a><\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">Wear resistance and dimensional stability<\/td><\/tr>\n            <tr><td class=\"ts-key\"><a href=\"https:\/\/aobosteel.com\/selection-of-tool-steel-for-trimming-dies\/\">Trimming dies<\/a><\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">Edge retention<\/td><\/tr>\n            <tr><td class=\"ts-key\">Thread rolling dies<\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">Surface wear resistance<\/td><\/tr>\n            <tr><td class=\"ts-key\"><a href=\"https:\/\/aobosteel.com\/tool-steel-for-coining-powder-compaction-dies\/\">Coining tools<\/a><\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">Working surface stability<\/td><\/tr>\n            <tr><td class=\"ts-key\"><a href=\"https:\/\/aobosteel.com\/tool-steel-for-gages-precision-tools\/\">Gauges and bushings<\/a><\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">Wear resistance and size control<\/td><\/tr>\n            <tr><td class=\"ts-key\">Precision cold-work tools<\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">Better dimensional stability<\/td><\/tr>\n            <tr><td class=\"ts-key\">Tool chips or cracks before wearing out<\/td><td class=\"ts-num\">S7<\/td><td class=\"ts-long\">More toughness is needed<\/td><\/tr>\n            <tr><td class=\"ts-key\">Tool stays intact but wears too fast<\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">More wear resistance is needed<\/td><\/tr>\n            <\/tbody>\n          <\/table>\n        <\/div>\n        <h2 class=\"ts-h2\">Equivalent Grades for Purchasing<\/h2>\n        <p class=\"ts-p\">After the material choice is clear, the next issue is specification. A2 is usually easier to identify across international standards. S7 needs more attention because some equivalent references are inconsistently used across markets.<\/p>\n        <div class=\"ts-table-wrap\"><table class=\"ts-table\">\n            <thead>\n              <tr><th>Standard \/ System<\/th><th>A2 Tool Steel<\/th><th>S7 Tool Steel<\/th><\/tr>\n            <\/thead>\n            <tbody>\n            <tr><td class=\"ts-grade\">AISI \/ SAE<\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">S7<\/td><\/tr>\n            <tr><td class=\"ts-grade\">UNS<\/td><td class=\"ts-num\">T30102<\/td><td class=\"ts-long\">T41907<\/td><\/tr>\n            <tr><td class=\"ts-grade\">DIN \/ W.Nr.<\/td><td class=\"ts-num\">1.2363<\/td><td class=\"ts-long\">Often cross-referenced as 1.2355 \/ 50CrMoV13-15<\/td><\/tr>\n            <tr><td class=\"ts-grade\">JIS<\/td><td class=\"ts-num\">SKD12<\/td><td class=\"ts-long\">No commonly used direct JIS equivalent<\/td><\/tr>\n            <tr><td class=\"ts-grade\">BS<\/td><td class=\"ts-num\">BA2<\/td><td class=\"ts-long\">No widely used direct BS equivalent<\/td><\/tr>\n            <tr><td class=\"ts-grade\">AFNOR<\/td><td class=\"ts-num\">Z100CDV5<\/td><td class=\"ts-long\">No widely used direct AFNOR equivalent<\/td><\/tr>\n            <tr><td class=\"ts-grade\">SS \/ Sweden<\/td><td class=\"ts-num\">2260<\/td><td class=\"ts-long\">No widely used direct SS equivalent<\/td><\/tr>\n            <\/tbody>\n          <\/table>\n        <\/div>\n        <p class=\"ts-p\">S7 corresponds to AISI S7 and UNS T41907. It is often cross-referenced to DIN 50CrMoV13-15 (around 1.2355), but there is <a href=\"https:\/\/aobosteel.com\/tool-steel-equivalent-grades\/\">no widely used direct JIS, BS, or AFNOR equivalent<\/a>. For purchasing, specify AISI S7 \/ UNS T41907 and confirm the chemical composition on the <a href=\"https:\/\/aobosteel.com\/tool-steel-quality-verification\/\">mill certificate<\/a>.<\/p>\n        <h2 class=\"ts-h2\">Final Selection Advice<\/h2>\n        <div class=\"ts-grid\">\n          <div class=\"ts-card\">\n            <h3>Choose S7 for breakage risk<\/h3>\n            <p>S7 is usually better for impact-loaded tools, punches, chisels, rivet sets, and tools prone to cracking or breaking.<\/p>\n          <\/div>\n          <div class=\"ts-card\">\n            <h3>Choose A2 for wear and accuracy<\/h3>\n            <p>A2 is chosen for blanking dies, trimming dies, forming tools, gauges, bushings, and precision tools where wear resistance and dimensional control matter most.<\/p>\n          <\/div>\n        <\/div>\n        <div class=\"ts-disclaimer\">\n          <p>For borderline cases, focus on which failure has the greater cost: breakage or wear. Decide based on which risk matters most to your application.<\/p>\n        <\/div>\n        <div class=\"ts-cta\">\n          <div>\n            <h3>Need S7 or A2 tool steel for your tooling application?<\/h3>\n            <p>Aobo Steel supplies S7 shock-resisting tool steel and A2 air-hardening cold-work tool steel for impact, wear, and precision tooling requirements.<\/p>\n            <p>Email sales@aobosteel.com &middot; Tel and WhatsApp +86 180 6294 5370<\/p>\n          <\/div>\n          <div class=\"ts-cta-actions\">\n            <a class=\"ts-btn-main popmake-16052\" href=\"javascript:void(0);\">Send Inquiry<\/a>\n            <a href=\"https:\/\/aobosteel.com\/tool-steel-supply\/\">View supply details<\/a>\n          <\/div>\n        <\/div>\n        <div class=\"ts-rel\">\n          <h3>Related pages<\/h3>\n          <p><b>S7 and A2 comparisons:<\/b> <a href=\"https:\/\/aobosteel.com\/s7-tool-steel-vs-4140\/\">S7 vs 4140<\/a> &middot; <a href=\"https:\/\/aobosteel.com\/d2-vs-s7-tool-steel\/\">S7 vs D2<\/a> &middot; <a href=\"https:\/\/aobosteel.com\/d2-vs-a2-tool-steel\/\">D2 vs A2<\/a> &middot; <a href=\"https:\/\/aobosteel.com\/h13-vs-a2-tool-steel\/\">H13 vs A2<\/a><\/p>\n          <p><b>Reference pages:<\/b> <a href=\"https:\/\/aobosteel.com\/a2-tool-steel-heat-treatment-guide\/\">A2 heat treatment guide<\/a> &middot; <a href=\"https:\/\/aobosteel.com\/tool-steel-tempering-chart\/\">Tool steel tempering chart<\/a><\/p>\n          <p><b>Grade families:<\/b> <a href=\"https:\/\/aobosteel.com\/tool-steels\/\">Tool steel grades<\/a> &middot; <a href=\"https:\/\/aobosteel.com\/s-series-tool-steel\/\">S-series tool steels<\/a> &middot; <a href=\"https:\/\/aobosteel.com\/tool-steel-material-finder\/\">Tool steel material finder<\/a><\/p>\n        <\/div>\n        <p class=\"ts-source\">Composition, hardness and heat-treatment figures are typical published values for S7 \/ 1.2355 and A2 \/ 1.2363 \/ SKD12. Confirm the exact range against the mill certificate for the delivered lot.<\/p>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n","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 v28.6 (Yoast SEO v28.6) - 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 vs A2 tool steel: shock resistance against wear resistance and dimensional stability. 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