{"id":13114,"date":"2026-02-28T09:30:45","date_gmt":"2026-02-28T01:30:45","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=13114"},"modified":"2026-09-18T17:50:04","modified_gmt":"2026-09-18T09:50:04","slug":"h13-vs-a2-tool-steel","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/es\/h13-vs-a2-tool-steel\/","title":{"rendered":"Acero para herramientas H13 vs. A2: Gu\u00eda de selecci\u00f3n para matrices y utillaje"},"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    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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>Hot Work vs Cold Work Tool Steel<\/div>\n        <h1 style=\"--h1-max:50px\">H13 vs A2 Tool Steel<\/h1>\n        <p>H13 and A2 are air-hardening tool steels used in different conditions. <a href=\"https:\/\/aobosteel.com\/hot-work-tool-steels\/\">H13, a hot work tool steel, performs well under heat<\/a>, pressure, cycling, and impact. Its main strengths are toughness, hot strength, and <a href=\"https:\/\/aobosteel.com\/thermal-fatigue-resistant-tool-steels\/\">heat checking resistance<\/a>. A2 is an <a href=\"https:\/\/aobosteel.com\/cold-work-tool-steels\/\">air-hardening cold-work tool steel<\/a>. It is used when tools operate at room temperature and need high hardness, wear resistance, edge retention, and dimensional stability.<\/p>\n        <p class=\"ts-p\">Use H13 for hot-work cracking, heat checking, or thermal fatigue. Use A2 for cold-work wear, edge retention, or when minimal distortion is needed.<\/p>\n        <p class=\"ts-p\">H13 and A2 both contain about 5% chromium. However, A2 has higher carbon and vanadium content, giving it greater hardness and wear resistance, while H13 offers better toughness and stability at high temperatures.<\/p>\n      <\/div>\n      <div class=\"ts-tool-area\">\n        <h2 class=\"ts-h2\">H13 and A2 Tool Steel Available from Aobo Steel<\/h2>\n        <p class=\"ts-p\">Aobo Steel supplies H13 hot-work tool steel and A2 air-hardening cold-work tool steel for different tooling failure modes, from thermal fatigue and hot cracking to wear resistance and dimensional stability.<\/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\/H13-STEEL-FLAT-BAR.avif\" alt=\"H13 tool steel supplied by Aobo Steel\" loading=\"lazy\"><\/div>\n          <h3>H13 | 1.2344 | SKD61<\/h3>\n          <p>Hot-work tool steel for die casting dies, hot forging dies, extrusion tooling, hot punches, hot shear blades, heat checking resistance, and thermal fatigue resistance.<\/p>\n          <div class=\"ts-prod-actions\">\n            <a class=\"ts-btn-main\" href=\"https:\/\/aobosteel.com\/h13-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><a href=\"https:\/\/aobosteel.com\/air-hardening-tool-steel\/\">Air-hardening cold-work tool steel for blanking dies<\/a>, punches, cold forming tools, thread rolling dies, cold-work shear blades, precision tooling, and dimensional stability.<\/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        <h2 class=\"ts-h2\">H13 vs A2 Quick Comparison<\/h2>\n        <div class=\"ts-table-wrap\"><table class=\"ts-table\">\n            <thead>\n              <tr><th>Item<\/th><th class=\"ds-text\">H13 Tool Steel<\/th><th class=\"ds-text\">A2 Tool Steel<\/th><\/tr>\n            <\/thead>\n            <tbody>\n            <tr><td class=\"ts-key\">Steel type<\/td><td class=\"ts-long ds-text\">Hot work tool steel<\/td><td class=\"ts-long ds-text\">Air-hardening cold work tool steel<\/td><\/tr>\n            <tr><td class=\"ts-key\">Main working condition<\/td><td class=\"ts-long ds-text\">Heat, pressure, thermal cycling, impact<\/td><td class=\"ts-long ds-text\">Room-temperature cutting, forming, punching, shearing<\/td><\/tr>\n            <tr><td class=\"ts-key\">Main failure resistance<\/td><td class=\"ts-long ds-text\">Heat checking, thermal fatigue, hot cracking<\/td><td class=\"ts-long ds-text\">Abrasive wear, edge wear, dimensional change<\/td><\/tr>\n            <tr><td class=\"ts-key\">Typical working hardness<\/td><td class=\"ts-long ds-text\">38-53 HRC<\/td><td class=\"ts-long ds-text\">57-62 HRC<\/td><\/tr>\n            <tr><td class=\"ts-key\">Common working range<\/td><td class=\"ts-long ds-text\">40-48 HRC for many hot-work tools<\/td><td class=\"ts-long ds-text\">58-60 HRC for many cold-work tools<\/td><\/tr>\n            <tr><td class=\"ts-key\">Abrasive wear resistance<\/td><td class=\"ts-long ds-text\">Medium<\/td><td class=\"ts-long ds-text\">High<\/td><\/tr>\n            <tr><td class=\"ts-key\">Toughness<\/td><td class=\"ts-long ds-text\">High<\/td><td class=\"ts-long ds-text\">Medium<\/td><\/tr>\n            <tr><td class=\"ts-key\">Hot hardness<\/td><td class=\"ts-long ds-text\">High<\/td><td class=\"ts-long ds-text\">Limited<\/td><\/tr>\n            <tr><td class=\"ts-key\">Thermal fatigue resistance<\/td><td class=\"ts-long ds-text\">Excellent<\/td><td class=\"ts-long ds-text\">Not suitable for hot-work service<\/td><\/tr>\n            <tr><td class=\"ts-key\">Dimensional stability<\/td><td class=\"ts-long ds-text\">Very good<\/td><td class=\"ts-long ds-text\">Excellent<\/td><\/tr>\n            <tr><td class=\"ts-key\">Typical applications<\/td><td class=\"ts-long ds-text\">Die casting dies, hot forging dies, hot extrusion tooling, hot punches, hot shear blades<\/td><td class=\"ts-long ds-text\">Blanking dies, punches, cold forming tools, thread rolling dies, cold-work shear blades, precision tooling<\/td><\/tr>\n            <tr><td class=\"ts-key\">Wrong-use risk<\/td><td class=\"ts-long ds-text\">Not ideal for high-wear cold-work edges<\/td><td class=\"ts-long ds-text\">Not suitable for repeated heating and cooling<\/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>Grade<\/th><th>C<\/th><th>Cr<\/th><th>Mo<\/th><th>V<\/th><\/tr>\n            <\/thead>\n            <tbody>\n            <tr><td class=\"ts-grade\">H13<\/td><td class=\"ts-num\">0.32-0.45%<\/td><td class=\"ts-num\">4.75-5.50%<\/td><td class=\"ts-num\">1.10-1.75%<\/td><td class=\"ts-num\">0.80-1.20%<\/td><\/tr>\n            <tr><td class=\"ts-grade\">A2<\/td><td class=\"ts-num\">0.95-1.05%<\/td><td class=\"ts-num\">4.75-5.50%<\/td><td class=\"ts-num\">0.90-1.40%<\/td><td class=\"ts-num\">0.15-0.50%<\/td><\/tr>\n            <\/tbody>\n          <\/table>\n        <\/div>\n        <p class=\"ts-p\">A2 has about 1.0% carbon, over twice that of H13. After heat treatment, it forms a harder, more wear-resistant matrix. This supports A2&#8217;s edge retention in cold-work tools.<\/p>\n        <p class=\"ts-p\">H13&#8217;s lower carbon reduces brittleness and improves resistance to shock and thermal stress. Molybdenum and vanadium help it retain strength at <a href=\"https:\/\/aobosteel.com\/tool-steel-hot-hardness-chart\/\">high temperatures<\/a>.<\/p>\n        <h2 class=\"ts-h2\">Equivalent Grades<\/h2>\n        <div class=\"ts-table-wrap\"><table class=\"ts-table\">\n            <thead>\n              <tr><th>AISI Grade<\/th><th>DIN \/ W.-Nr.<\/th><th>JIS<\/th><th>UNS<\/th><th>GB Reference<\/th><th>Steel Type<\/th><\/tr>\n            <\/thead>\n            <tbody>\n            <tr><td class=\"ts-grade\">H13<\/td><td class=\"ts-num\">1.2344<\/td><td class=\"ts-num\">SKD61<\/td><td class=\"ts-num\">T20813<\/td><td class=\"ts-num\">4Cr5MoSiV1<\/td><td class=\"ts-num\">Hot work tool steel<\/td><\/tr>\n            <tr><td class=\"ts-grade\">A2<\/td><td class=\"ts-num\">1.2363<\/td><td class=\"ts-num\">SKD12<\/td><td class=\"ts-num\">T30102<\/td><td class=\"ts-num\">Cr5Mo1V-type reference<\/td><td class=\"ts-num\">Air-hardening cold work tool steel<\/td><\/tr>\n            <\/tbody>\n          <\/table>\n        <\/div>\n        <p class=\"ts-p\">In international standards, H13 is also 1.2344 or SKD61. A2 matches 1.2363 or SKD12.<\/p>\n        <h2 class=\"ts-h2\">Hardness and Heat Treatment Difference<\/h2>\n        <p class=\"ts-p\">A2 is generally used at a higher hardness for wear resistance. H13 is used at a lower hardness to achieve toughness and thermal fatigue resistance required for hot-work tools.<\/p>\n        <div class=\"ts-table-wrap\"><table class=\"ts-table\">\n            <thead>\n              <tr><th>Item<\/th><th>H13<\/th><th>A2<\/th><\/tr>\n            <\/thead>\n            <tbody>\n            <tr><td class=\"ts-key\">Steel category<\/td><td class=\"ts-long\">Hot work tool steel<\/td><td class=\"ts-long\">Air-hardening cold work tool steel<\/td><\/tr>\n            <tr><td class=\"ts-key\">Austenitizing range<\/td><td class=\"ts-long\">About 995-1025 \u00b0C<\/td><td class=\"ts-long\">About 925-980 \u00b0C<\/td><\/tr>\n            <tr><td class=\"ts-key\">Quenching<\/td><td class=\"ts-long\">Air or pressurized gas<\/td><td class=\"ts-long\">Air<\/td><\/tr>\n            <tr><td class=\"ts-key\">Tempering practice<\/td><td class=\"ts-long\">Double or triple temper commonly used<\/td><td class=\"ts-long\">Double temper commonly recommended<\/td><\/tr>\n            <tr><td class=\"ts-key\">Typical working hardness<\/td><td class=\"ts-long\">38-53 HRC<\/td><td class=\"ts-long\">57-62 HRC<\/td><\/tr>\n            <tr><td class=\"ts-key\">Common working range<\/td><td class=\"ts-long\">40-48 HRC for many hot-work tools<\/td><td class=\"ts-long\">58-60 HRC for many cold-work tools<\/td><\/tr>\n            <tr><td class=\"ts-key\">Annealed hardness reference<\/td><td class=\"ts-long\">Around 220-235 HB<\/td><td class=\"ts-long\">Around 220-235 HB<\/td><\/tr>\n            <tr><td class=\"ts-key\">Heat-treatment target<\/td><td class=\"ts-long\">Toughness, hot strength, stress relief, thermal fatigue resistance<\/td><td class=\"ts-long\">High hardness, wear resistance, edge retention, dimensional stability<\/td><\/tr>\n            <\/tbody>\n          <\/table>\n        <\/div>\n        <p class=\"ts-p\"><a href=\"https:\/\/aobosteel.com\/a2-tool-steel-hardness\/\">A2 is typically 57-62 HRC<\/a>. <a href=\"https:\/\/aobosteel.com\/tool-steel-size-change-in-heat-treatment\/\">Air-hardening limits distortion<\/a>, supporting precision tooling.<\/p>\n        <p class=\"ts-p\"><a href=\"https:\/\/aobosteel.com\/h13-steel-heat-treatment\/\">H13 is <a href=\"https:\/\/aobosteel.com\/tool-steel-tempering-chart\/\">tempered at higher temperatures<\/a><\/a> to maintain stability in hot-work situations. In these applications, balancing toughness, hot strength, and resistance to heat checking is prioritized over maximum hardness.<\/p>\n        <h2 class=\"ts-h2\">Wear Resistance, Toughness, and Thermal Fatigue<\/h2>\n        <p class=\"ts-p\">A2 has superior abrasive wear resistance; H13 has superior toughness and thermal fatigue resistance.<\/p>\n        <div class=\"ts-table-wrap\"><table class=\"ts-table\">\n            <thead>\n              <tr><th>Property<\/th><th>H13<\/th><th>A2<\/th><th>Better Choice<\/th><\/tr>\n            <\/thead>\n            <tbody>\n            <tr><td class=\"ts-key\">Abrasive wear resistance<\/td><td class=\"ts-num\">Medium<\/td><td class=\"ts-num\">High<\/td><td class=\"ts-num\">A2<\/td><\/tr>\n            <tr><td class=\"ts-key\">Edge retention in cold work<\/td><td class=\"ts-num\">Medium<\/td><td class=\"ts-num\">High<\/td><td class=\"ts-num\">A2<\/td><\/tr>\n            <tr><td class=\"ts-key\">Toughness<\/td><td class=\"ts-num\">High<\/td><td class=\"ts-num\">Medium<\/td><td class=\"ts-num\">H13<\/td><\/tr>\n            <tr><td class=\"ts-key\">Shock resistance<\/td><td class=\"ts-num\">High<\/td><td class=\"ts-num\">Medium<\/td><td class=\"ts-num\">H13<\/td><\/tr>\n            <tr><td class=\"ts-key\">Hot hardness<\/td><td class=\"ts-num\">High<\/td><td class=\"ts-num\">Limited<\/td><td class=\"ts-num\">H13<\/td><\/tr>\n            <tr><td class=\"ts-key\">Thermal fatigue resistance<\/td><td class=\"ts-num\">Excellent<\/td><td class=\"ts-num\">Not suitable for hot-work service<\/td><td class=\"ts-num\">H13<\/td><\/tr>\n            <tr><td class=\"ts-key\">Dimensional stability after heat treatment<\/td><td class=\"ts-num\">Very good<\/td><td class=\"ts-num\">Excellent<\/td><td class=\"ts-num\">A2<\/td><\/tr>\n            <\/tbody>\n          <\/table>\n        <\/div>\n        <p class=\"ts-p\">Choose A2 when tools fail due to abrasive wear, edge rounding, or loss of performance in cold work. Choose H13 when tools are subject to impact, hot pressure, repeated heating-cooling, or heat checking. In these conditions, wear resistance alone is insufficient.<\/p>\n        <h2 class=\"ts-h2\">Application Selection Guide<\/h2>\n        <div class=\"ts-table-wrap\"><table class=\"ts-table\">\n            <thead>\n              <tr><th>Application or Working Condition<\/th><th>Better Choice<\/th><th>Reason<\/th><\/tr>\n            <\/thead>\n            <tbody>\n            <tr><td class=\"ts-key\"><a href=\"https:\/\/aobosteel.com\/tool-steel-for-die-casting-dies-inserts\/\">Aluminum die casting dies<\/a><\/td><td class=\"ts-num\">H13<\/td><td class=\"ts-long\">Resists heat checking and thermal fatigue<\/td><\/tr>\n            <tr><td class=\"ts-key\">Zinc and magnesium die casting tooling<\/td><td class=\"ts-num\">H13<\/td><td class=\"ts-long\">Handles repeated heating and cooling<\/td><\/tr>\n            <tr><td class=\"ts-key\"><a href=\"https:\/\/aobosteel.com\/tool-steel-for-hot-forging-stamping-trimming-dies\/\">Hot forging dies<\/a><\/td><td class=\"ts-num\">H13<\/td><td class=\"ts-long\">Better toughness under heat and impact<\/td><\/tr>\n            <tr><td class=\"ts-key\">Hot extrusion dies, mandrels, and liners<\/td><td class=\"ts-num\">H13<\/td><td class=\"ts-long\">Resists heat, pressure, and thermal cycling<\/td><\/tr>\n            <tr><td class=\"ts-key\">Hot punches<\/td><td class=\"ts-num\">H13<\/td><td class=\"ts-long\">Better hot strength and shock resistance<\/td><\/tr>\n            <tr><td class=\"ts-key\"><a href=\"https:\/\/aobosteel.com\/selection-of-tool-steel-for-hot-shear-blades\/\">Hot shear blades<\/a><\/td><td class=\"ts-num\">H13<\/td><td class=\"ts-long\">Better resistance to heat and impact<\/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 cold-work edge retention<\/td><\/tr>\n            <tr><td class=\"ts-key\">Punches for cold work<\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">Higher hardness and wear resistance<\/td><\/tr>\n            <tr><td class=\"ts-key\">Cold forming tools<\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">Good wear resistance with low distortion<\/td><\/tr>\n            <tr><td class=\"ts-key\"><a href=\"https:\/\/aobosteel.com\/tool-steel-for-cold-extrusion-cold-heading-thread-rolling-dies\/\">Thread rolling dies<\/a><\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">Good dimensional stability and wear resistance<\/td><\/tr>\n            <tr><td class=\"ts-key\">Cold-work shear blades and slitters<\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">Higher working hardness<\/td><\/tr>\n            <tr><td class=\"ts-key\"><a href=\"https:\/\/aobosteel.com\/tool-steel-for-gages-precision-tools\/\">Precision gauges and tooling<\/a><\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">Good dimensional stability after heat treatment<\/td><\/tr>\n            <tr><td class=\"ts-key\">Tool fails by heat checking<\/td><td class=\"ts-num\">H13<\/td><td class=\"ts-long\">Better thermal fatigue resistance<\/td><\/tr>\n            <tr><td class=\"ts-key\">Tool fails by abrasive edge wear<\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">Higher carbon and better wear resistance<\/td><\/tr>\n            <tr><td class=\"ts-key\">Tool fails by impact cracking<\/td><td class=\"ts-num\">Usually H13<\/td><td class=\"ts-long\">Better toughness<\/td><\/tr>\n            <tr><td class=\"ts-key\">Tool requires 57-62 HRC<\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long\">More suitable for high-hardness cold-work tooling<\/td><\/tr>\n            <tr><td class=\"ts-key\">Tool requires hot stability at 38-53 HRC<\/td><td class=\"ts-num\">H13<\/td><td class=\"ts-long\">Better for hot-work service<\/td><\/tr>\n            <\/tbody>\n          <\/table>\n        <\/div>\n        <p class=\"ts-p\"><a href=\"https:\/\/aobosteel.com\/plastic-mold-steels\/\">Injection molds<\/a> may use either. Choose A2 if abrasive wear is key; H13 if toughness, stability, polishability, or lifespan matter more.<\/p>\n        <h2 class=\"ts-h2\">When H13 or A2 Is the Wrong Choice<\/h2>\n        <div class=\"ts-table-wrap\"><table class=\"ts-table\">\n            <thead>\n              <tr><th class=\"ds-text\">Situation<\/th><th>Avoid<\/th><th class=\"ds-text\">Better Direction<\/th><\/tr>\n            <\/thead>\n            <tbody>\n            <tr><td class=\"ts-key ds-text\">Long-run cold blanking or cold shearing with severe abrasive wear<\/td><td class=\"ts-num\">H13<\/td><td class=\"ts-long ds-text\">A2 or higher-wear cold work steels may be better<\/td><\/tr>\n            <tr><td class=\"ts-key ds-text\">Die casting, hot forging, hot extrusion, or repeated heating and cooling<\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long ds-text\">H13 is the correct direction<\/td><\/tr>\n            <tr><td class=\"ts-key ds-text\">Severe impact, cracking, or sudden fracture at room temperature<\/td><td class=\"ts-num\">A2<\/td><td class=\"ts-long ds-text\">H13 or <a href=\"https:\/\/aobosteel.com\/s7-tool-steel\/\">a shock-resistant grade such as S7<\/a> may be safer<\/td><\/tr>\n            <tr><td class=\"ts-key ds-text\"><a href=\"https:\/\/aobosteel.com\/tool-steel-selection-by-application\/\">High-hardness cold-work tooling with no heat and no severe impact<\/a><\/td><td class=\"ts-num\">H13<\/td><td class=\"ts-long ds-text\">A2 is usually more practical<\/td><\/tr>\n            <tr><td class=\"ts-key ds-text\">Extremely abrasive cold-work production<\/td><td class=\"ts-num\">A2 may be insufficient<\/td><td class=\"ts-long ds-text\"><a href=\"https:\/\/aobosteel.com\/d2-tool-steel\/\">D2 or other higher-carbide cold work steels<\/a> may give better edge life<\/td><\/tr>\n            <tr><td class=\"ts-key ds-text\">Extremely high hot-wear or hot-hardness demand<\/td><td class=\"ts-num\">Standard H13 may be insufficient<\/td><td class=\"ts-long ds-text\"><a href=\"https:\/\/aobosteel.com\/h13-vs-1-2367-tool-steel\/\">Higher-alloy hot work grades may be considered<\/a><\/td><\/tr>\n            <tr><td class=\"ts-key ds-text\">Tool requires very tight final dimensions after heat treatment<\/td><td class=\"ts-num\">Do not assume zero distortion<\/td><td class=\"ts-long ds-text\">A2 has good stability, but final size change still depends on section size, geometry, and heat-treatment practice<\/td><\/tr>\n            <\/tbody>\n          <\/table>\n        <\/div>\n        <p class=\"ts-p\">Do not select H13 solely for toughness. If no heat, cycling, or impact exists, H13 is likely unnecessary. Do not use A2 for hot work. It is not designed for heat checking, hot cracking, or long exposure to high temperatures.<\/p>\n        <h2 class=\"ts-h2\">Final Selection<\/h2>\n        <div class=\"ts-grid\">\n          <div class=\"ts-card\">\n            <h3>Choose H13 for hot-work failure<\/h3>\n            <p>Choose H13 for tools exposed to heat, pressure, thermal cycling, impact, hot cracking, thermal fatigue, or heat-checking risk.<\/p>\n          <\/div>\n          <div class=\"ts-card\">\n            <h3>Choose A2 for cold-work wear<\/h3>\n            <p>Choose A2 for room-temperature applications requiring high hardness, abrasive wear resistance, edge retention, precision, and dimensional stability.<\/p>\n          <\/div>\n        <\/div>\n        <div class=\"ts-disclaimer\">\n          <p>The practical rule is that H13 is for hot-work failure. A2 is for cold-work wear and precision tooling.<\/p>\n        <\/div>\n        <div class=\"ts-cta\">\n          <div>\n            <h3>Need H13 or A2 tool steel?<\/h3>\n            <p>Aobo Steel supplies H13 hot-work tool steel and A2 air-hardening cold-work tool steel for die casting, hot forging, extrusion tooling, blanking dies, punches, cold forming tools, and precision tooling applications.<\/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>H13 comparisons:<\/b> <a href=\"https:\/\/aobosteel.com\/h13-vs-h11-tool-steel\/\">H13 vs H11<\/a> &middot; <a href=\"https:\/\/aobosteel.com\/h13-vs-p20-steel\/\">H13 vs P20<\/a> &middot; <a href=\"https:\/\/aobosteel.com\/h13-vs-h21-tool-steel\/\">H13 vs H21<\/a> &middot; <a href=\"https:\/\/aobosteel.com\/h13-vs-skd61-tool-steel\/\">H13 vs SKD61<\/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\/h13-steel-hardness\/\">H13 steel hardness<\/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\/h-series-tool-steels\/\">H-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 H13 \/ 1.2344 \/ SKD61 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>Hot Work vs Cold Work Tool Steel H13 vs A2 Tool Steel H13 and A2 are air-hardening tool steels used in different conditions. H13, a hot work tool steel, performs well under heat, pressure, cycling, and impact. Its main strengths are toughness, hot strength, and heat checking resistance. A2 is an air-hardening cold-work tool steel. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15301,"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-13114","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>H13 vs A2 Tool Steel: Hot Work or Cold Work?<\/title>\n<meta name=\"description\" content=\"H13 vs A2 tool steel: hot-work toughness and thermal fatigue against cold-work hardness and wear. 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H13, a hot work tool steel, performs well under heat, pressure, cycling, and impact. Its main strengths are toughness, hot strength, and heat checking resistance. 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H13, a hot work tool steel, performs well under heat, pressure, cycling, and impact. Its main strengths are toughness, hot strength, and heat checking resistance. 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