{"id":18234,"date":"2026-09-13T15:11:00","date_gmt":"2026-09-13T07:11:00","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=18234"},"modified":"2026-09-15T10:31:46","modified_gmt":"2026-09-15T02:31:46","slug":"tool-steel-composition-chart","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/ko\/tool-steel-composition-chart\/","title":{"rendered":"Tool Steel Composition Chart for All AISI Groups"},"content":{"rendered":"\n\n\n\n\n\nTool Steel Composition Chart (AISI M, T, H, A, D, O, S, L, P, W) | Aobo Steel<\/title>\n<meta name=\"description\" content=\"Chemical composition limits for the principal AISI tool steel grades - carbon, chromium, tungsten, molybdenum, vanadium and cobalt ranges for the M, T, H, A, D, O, S, L, P and W groups.\">\n<style>\n: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; 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.ts-hero h1{font-size:1.5rem;}\n }\n @media (max-width:520px){\n .ts-hero-top,.ts-tool-area{padding:.8em;}\n table.ts-table{font-size:.82em;}\n .ts-table thead th,.ts-table tbody td{padding:.4em .4em;}\n }\n \/* static-page overrides (no sorting on this page) *\/\n table.ts-table thead th{cursor:default;}\n .ts-props a{color:var(--aobo-blue) !important;text-decoration:none !important;}\n .ts-props a:hover{text-decoration:underline !important;}\n td.ts-uns{color:var(--aobo-muted);}\n .ts-rel{margin-top:1.2em;background:#fff;border:1px solid var(--aobo-border);\n border-left:3px solid var(--aobo-blue);border-radius:0 var(--aobo-radius) var(--aobo-radius) 0;padding:1em 1.2em;}\n .ts-rel h3{margin:0 0 .5em;font-size:.95em;color:var(--aobo-text);}\n .ts-rel p{margin:0;font-size:.85em;line-height:1.9;color:var(--aobo-muted);}\n .ts-rel p a{font-weight:600;}\n<\/style>\n<\/head>\n<body>\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>Tool Steel Reference Data<\/div>\n <h1>Tool Steel Composition Chart<\/h1>\n <p>Chemical composition limits for the principal AISI tool steel types — the M, T, H, A, D, O, S, L, P and W groups. Values are cast or heat analysis ranges in weight percent; a single value is a maximum unless followed by “min”.<\/p>\n <\/div>\n <div class=\"ts-tool-area\">\n <div class=\"ts-legend\">\n <span><b>wt %<\/b> all values<\/span>\n <span><b>13.00-15.00<\/b> from–to range<\/span>\n <span><b>0.30 max<\/b> maximum limit<\/span>\n <span><b>—<\/b> not specified<\/span>\n <span><b>(a)–(e)<\/b> footnote<\/span>\n <\/div>\n <div class=\"ts-table-wrap\">\n <table class=\"ts-table\">\n <thead>\n <tr><th>AISI<\/th><th>UNS<\/th><th>C<\/th><th>Mn<\/th><th>Si<\/th><th>Cr<\/th><th>Ni<\/th><th>Mo<\/th><th>W<\/th><th>V<\/th><th>Co<\/th><\/tr>\n <\/thead>\n <tbody>\n<tr class=\"ts-group\"><td colspan=\"11\">Molybdenum high-speed steels (M series)<\/td><\/tr>\n<tr><td class=\"ts-grade\">M1<\/td><td class=\"ts-uns ts-num\">T11301<\/td><td class=\"ts-num\">0.78-0.88<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.20-0.50<\/td><td class=\"ts-num\">3.50-4.00<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">8.20-9.20<\/td><td class=\"ts-num\">1.40-2.10<\/td><td class=\"ts-num\">1.00-1.25<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">M2<\/td><td class=\"ts-uns ts-num\">T11302<\/td><td class=\"ts-num\">0.78-0.88; 0.95-1.05<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.20-0.45<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">4.50-5.50<\/td><td class=\"ts-num\">5.50-6.75<\/td><td class=\"ts-num\">1.75-2.20<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">M3, class 1<\/td><td class=\"ts-uns ts-num\">T11313<\/td><td class=\"ts-num\">1.00-1.10<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.20-0.45<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">4.75-6.50<\/td><td class=\"ts-num\">5.00-6.75<\/td><td class=\"ts-num\">2.25-2.75<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">M3, class 2<\/td><td class=\"ts-uns ts-num\">T11323<\/td><td class=\"ts-num\">1.15-1.25<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.20-0.45<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">4.75-6.50<\/td><td class=\"ts-num\">5.00-6.75<\/td><td class=\"ts-num\">2.75-3.75<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">M4<\/td><td class=\"ts-uns ts-num\">T11304<\/td><td class=\"ts-num\">1.25-1.40<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.20-0.45<\/td><td class=\"ts-num\">3.75-4.75<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">4.25-5.50<\/td><td class=\"ts-num\">5.25-6.50<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">M7<\/td><td class=\"ts-uns ts-num\">T11307<\/td><td class=\"ts-num\">0.97-1.05<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.20-0.55<\/td><td class=\"ts-num\">3.50-4.00<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">8.20-9.20<\/td><td class=\"ts-num\">1.40-2.10<\/td><td class=\"ts-num\">1.75-2.25<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">M10<\/td><td class=\"ts-uns ts-num\">T11310<\/td><td class=\"ts-num\">0.84-0.94; 0.95-1.05<\/td><td class=\"ts-num\">0.10-0.40<\/td><td class=\"ts-num\">0.20-0.45<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">7.75-8.50<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">1.80-2.20<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">M30<\/td><td class=\"ts-uns ts-num\">T11330<\/td><td class=\"ts-num\">0.75-0.85<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.20-0.45<\/td><td class=\"ts-num\">3.50-4.25<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">7.75-9.00<\/td><td class=\"ts-num\">1.30-2.30<\/td><td class=\"ts-num\">1.00-1.40<\/td><td class=\"ts-num\">4.50-5.50<\/td><\/tr>\n<tr><td class=\"ts-grade\">M33<\/td><td class=\"ts-uns ts-num\">T11333<\/td><td class=\"ts-num\">0.85-0.92<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.15-0.50<\/td><td class=\"ts-num\">3.50-4.00<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">9.00-10.00<\/td><td class=\"ts-num\">1.30-2.10<\/td><td class=\"ts-num\">1.00-1.35<\/td><td class=\"ts-num\">7.75-8.75<\/td><\/tr>\n<tr><td class=\"ts-grade\">M34<\/td><td class=\"ts-uns ts-num\">T11334<\/td><td class=\"ts-num\">0.85-0.92<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.20-0.45<\/td><td class=\"ts-num\">3.50-4.00<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">7.75-9.20<\/td><td class=\"ts-num\">1.40-2.10<\/td><td class=\"ts-num\">1.90-2.30<\/td><td class=\"ts-num\">7.75-8.75<\/td><\/tr>\n<tr><td class=\"ts-grade\">M35<\/td><td class=\"ts-uns ts-num\">T11335<\/td><td class=\"ts-num\">0.82-0.88<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.20-0.45<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">4.50-5.50<\/td><td class=\"ts-num\">5.50-6.75<\/td><td class=\"ts-num\">1.75-2.20<\/td><td class=\"ts-num\">4.50-5.50<\/td><\/tr>\n<tr><td class=\"ts-grade\">M36<\/td><td class=\"ts-uns ts-num\">T11336<\/td><td class=\"ts-num\">0.80-0.90<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.20-0.45<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">4.50-5.50<\/td><td class=\"ts-num\">5.50-6.50<\/td><td class=\"ts-num\">1.75-2.25<\/td><td class=\"ts-num\">7.75-8.75<\/td><\/tr>\n<tr><td class=\"ts-grade\">M41<\/td><td class=\"ts-uns ts-num\">T11341<\/td><td class=\"ts-num\">1.05-1.15<\/td><td class=\"ts-num\">0.20-0.60<\/td><td class=\"ts-num\">0.15-0.50<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">3.25-4.25<\/td><td class=\"ts-num\">6.25-7.00<\/td><td class=\"ts-num\">1.75-2.25<\/td><td class=\"ts-num\">4.75-5.75<\/td><\/tr>\n<tr><td class=\"ts-grade\">M42<\/td><td class=\"ts-uns ts-num\">T11342<\/td><td class=\"ts-num\">1.05-1.15<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.15-0.65<\/td><td class=\"ts-num\">3.50-4.25<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">9.00-10.00<\/td><td class=\"ts-num\">1.15-1.85<\/td><td class=\"ts-num\">0.95-1.35<\/td><td class=\"ts-num\">7.75-8.75<\/td><\/tr>\n<tr><td class=\"ts-grade\">M43<\/td><td class=\"ts-uns ts-num\">T11343<\/td><td class=\"ts-num\">1.15-1.25<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">0.15-0.65<\/td><td class=\"ts-num\">3.50-4.25<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">7.50-8.50<\/td><td class=\"ts-num\">2.25-3.00<\/td><td class=\"ts-num\">1.50-1.75<\/td><td class=\"ts-num\">7.75-8.75<\/td><\/tr>\n<tr><td class=\"ts-grade\">M44<\/td><td class=\"ts-uns ts-num\">T11344<\/td><td class=\"ts-num\">1.10-1.20<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">0.30-0.55<\/td><td class=\"ts-num\">4.00-4.75<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">6.00-7.00<\/td><td class=\"ts-num\">5.00-5.75<\/td><td class=\"ts-num\">1.85-2.20<\/td><td class=\"ts-num\">11.00-12.25<\/td><\/tr>\n<tr><td class=\"ts-grade\">M46<\/td><td class=\"ts-uns ts-num\">T11346<\/td><td class=\"ts-num\">1.22-1.30<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">0.40-0.65<\/td><td class=\"ts-num\">3.70-4.20<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">8.00-8.50<\/td><td class=\"ts-num\">1.90-2.20<\/td><td class=\"ts-num\">3.00-3.30<\/td><td class=\"ts-num\">7.80-8.80<\/td><\/tr>\n<tr><td class=\"ts-grade\">M47<\/td><td class=\"ts-uns ts-num\">T11347<\/td><td class=\"ts-num\">1.05-1.15<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.20-0.45<\/td><td class=\"ts-num\">3.50-4.00<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">9.25-10.00<\/td><td class=\"ts-num\">1.30-1.80<\/td><td class=\"ts-num\">1.15-1.35<\/td><td class=\"ts-num\">4.75-5.25<\/td><\/tr>\n<tr><td class=\"ts-grade\">M48<\/td><td class=\"ts-uns ts-num\">T11348<\/td><td class=\"ts-num\">1.42-1.52<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">3.50-4.00<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">4.75-5.50<\/td><td class=\"ts-num\">9.50-10.50<\/td><td class=\"ts-num\">2.75-3.25<\/td><td class=\"ts-num\">8.00-10.00<\/td><\/tr>\n<tr><td class=\"ts-grade\">M62<\/td><td class=\"ts-uns ts-num\">T11362<\/td><td class=\"ts-num\">1.25-1.35<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">3.50-4.00<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">10.00-11.00<\/td><td class=\"ts-num\">5.75-6.50<\/td><td class=\"ts-num\">1.80-2.10<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr class=\"ts-group\"><td colspan=\"11\">Tungsten high-speed steels (T series)<\/td><\/tr>\n<tr><td class=\"ts-grade\">T1<\/td><td class=\"ts-uns ts-num\">T12001<\/td><td class=\"ts-num\">0.65-0.80<\/td><td class=\"ts-num\">0.10-0.40<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">17.25-18.75<\/td><td class=\"ts-num\">0.90-1.30<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">T2<\/td><td class=\"ts-uns ts-num\">T12002<\/td><td class=\"ts-num\">0.80-0.90<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">1.00 max<\/td><td class=\"ts-num\">17.50-19.00<\/td><td class=\"ts-num\">1.80-2.40<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">T4<\/td><td class=\"ts-uns ts-num\">T12004<\/td><td class=\"ts-num\">0.70-0.80<\/td><td class=\"ts-num\">0.10-0.40<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.40-1.00<\/td><td class=\"ts-num\">17.50-19.00<\/td><td class=\"ts-num\">0.80-1.20<\/td><td class=\"ts-num\">4.25-5.75<\/td><\/tr>\n<tr><td class=\"ts-grade\">T5<\/td><td class=\"ts-uns ts-num\">T12005<\/td><td class=\"ts-num\">0.75-0.85<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">3.75-5.00<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.50-1.25<\/td><td class=\"ts-num\">17.50-19.00<\/td><td class=\"ts-num\">1.80-2.40<\/td><td class=\"ts-num\">7.00-9.50<\/td><\/tr>\n<tr><td class=\"ts-grade\">T6<\/td><td class=\"ts-uns ts-num\">T12006<\/td><td class=\"ts-num\">0.75-0.85<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">4.00-4.75<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.40-1.00<\/td><td class=\"ts-num\">18.50-21.00<\/td><td class=\"ts-num\">1.50-2.10<\/td><td class=\"ts-num\">11.00-13.00<\/td><\/tr>\n<tr><td class=\"ts-grade\">T8<\/td><td class=\"ts-uns ts-num\">T12008<\/td><td class=\"ts-num\">0.75-0.85<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.40-1.00<\/td><td class=\"ts-num\">13.25-14.75<\/td><td class=\"ts-num\">1.80-2.40<\/td><td class=\"ts-num\">4.25-5.75<\/td><\/tr>\n<tr><td class=\"ts-grade\">T15<\/td><td class=\"ts-uns ts-num\">T12015<\/td><td class=\"ts-num\">1.50-1.60<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">3.75-5.00<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">1.00 max<\/td><td class=\"ts-num\">11.75-13.00<\/td><td class=\"ts-num\">4.50-5.25<\/td><td class=\"ts-num\">4.75-5.25<\/td><\/tr>\n<tr class=\"ts-group\"><td colspan=\"11\">Intermediate high-speed steels<\/td><\/tr>\n<tr><td class=\"ts-grade\">M50<\/td><td class=\"ts-uns ts-num\">T11350<\/td><td class=\"ts-num\">0.78-0.88<\/td><td class=\"ts-num\">0.15-0.45<\/td><td class=\"ts-num\">0.20-0.60<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">3.90-4.75<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.80-1.25<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">M52<\/td><td class=\"ts-uns ts-num\">T11352<\/td><td class=\"ts-num\">0.85-0.95<\/td><td class=\"ts-num\">0.15-0.45<\/td><td class=\"ts-num\">0.20-0.60<\/td><td class=\"ts-num\">3.50-4.30<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">4.00-4.90<\/td><td class=\"ts-num\">0.75-1.50<\/td><td class=\"ts-num\">1.65-2.25<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr class=\"ts-group\"><td colspan=\"11\">Chromium hot-work steels (H10-H19)<\/td><\/tr>\n<tr><td class=\"ts-grade\">H10<\/td><td class=\"ts-uns ts-num\">T20810<\/td><td class=\"ts-num\">0.35-0.45<\/td><td class=\"ts-num\">0.25-0.70<\/td><td class=\"ts-num\">0.80-1.20<\/td><td class=\"ts-num\">3.00-3.75<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">2.00-3.00<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.25-0.75<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">H11<\/td><td class=\"ts-uns ts-num\">T20811<\/td><td class=\"ts-num\">0.33-0.43<\/td><td class=\"ts-num\">0.20-0.50<\/td><td class=\"ts-num\">0.80-1.20<\/td><td class=\"ts-num\">4.75-5.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">1.10-1.60<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.30-0.60<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">H12<\/td><td class=\"ts-uns ts-num\">T20812<\/td><td class=\"ts-num\">0.30-0.40<\/td><td class=\"ts-num\">0.20-0.50<\/td><td class=\"ts-num\">0.80-1.20<\/td><td class=\"ts-num\">4.75-5.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">1.25-1.75<\/td><td class=\"ts-num\">1.00-1.70<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13<\/td><td class=\"ts-uns ts-num\">T20813<\/td><td class=\"ts-num\">0.32-0.45<\/td><td class=\"ts-num\">0.20-0.50<\/td><td class=\"ts-num\">0.80-1.20<\/td><td class=\"ts-num\">4.75-5.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">1.10-1.75<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.80-1.20<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">H14<\/td><td class=\"ts-uns ts-num\">T20814<\/td><td class=\"ts-num\">0.35-0.45<\/td><td class=\"ts-num\">0.20-0.50<\/td><td class=\"ts-num\">0.80-1.20<\/td><td class=\"ts-num\">4.75-5.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">4.00-5.25<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">H19<\/td><td class=\"ts-uns ts-num\">T20819<\/td><td class=\"ts-num\">0.32-0.45<\/td><td class=\"ts-num\">0.20-0.50<\/td><td class=\"ts-num\">0.20-0.50<\/td><td class=\"ts-num\">4.00-4.75<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.30-0.55<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">1.75-2.20<\/td><td class=\"ts-num\">4.00-4.50<\/td><\/tr>\n<tr class=\"ts-group\"><td colspan=\"11\">Tungsten hot-work steels (H21-H26)<\/td><\/tr>\n<tr><td class=\"ts-grade\">H21<\/td><td class=\"ts-uns ts-num\">T20821<\/td><td class=\"ts-num\">0.26-0.36<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.15-0.50<\/td><td class=\"ts-num\">3.00-3.75<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">8.50-10.00<\/td><td class=\"ts-num\">0.30-0.60<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">H22<\/td><td class=\"ts-uns ts-num\">T20822<\/td><td class=\"ts-num\">0.30-0.40<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">1.75-3.75<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">10.00-11.75<\/td><td class=\"ts-num\">0.25-0.50<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">H23<\/td><td class=\"ts-uns ts-num\">T20823<\/td><td class=\"ts-num\">0.25-0.35<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.15-0.60<\/td><td class=\"ts-num\">11.00-12.75<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">11.00-12.75<\/td><td class=\"ts-num\">0.75-1.25<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">H24<\/td><td class=\"ts-uns ts-num\">T20824<\/td><td class=\"ts-num\">0.42-0.53<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">2.50-3.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">14.00-16.00<\/td><td class=\"ts-num\">0.40-0.60<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">H25<\/td><td class=\"ts-uns ts-num\">T20825<\/td><td class=\"ts-num\">0.22-0.32<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">14.00-16.00<\/td><td class=\"ts-num\">0.40-0.60<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">H26<\/td><td class=\"ts-uns ts-num\">T20826<\/td><td class=\"ts-num\">0.45-0.55 <span class=\"ts-sup\">(b)<\/span><\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">17.25-19.00<\/td><td class=\"ts-num\">0.75-1.25<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr class=\"ts-group\"><td colspan=\"11\">Molybdenum hot-work steels<\/td><\/tr>\n<tr><td class=\"ts-grade\">H42<\/td><td class=\"ts-uns ts-num\">T20842<\/td><td class=\"ts-num\">0.55-0.70 <span class=\"ts-sup\">(b)<\/span><\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">3.75-4.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">4.50-5.50<\/td><td class=\"ts-num\">5.50-6.75<\/td><td class=\"ts-num\">1.75-2.20<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr class=\"ts-group\"><td colspan=\"11\">Air-hardening cold-work steels (A series)<\/td><\/tr>\n<tr><td class=\"ts-grade\">A2<\/td><td class=\"ts-uns ts-num\">T30102<\/td><td class=\"ts-num\">0.95-1.05<\/td><td class=\"ts-num\">1.00 max<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">4.75-5.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.90-1.40<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.15-0.50<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">A3<\/td><td class=\"ts-uns ts-num\">T30103<\/td><td class=\"ts-num\">1.20-1.30<\/td><td class=\"ts-num\">0.40-0.60<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">4.75-5.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.90-1.40<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.80-1.40<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">A4<\/td><td class=\"ts-uns ts-num\">T30104<\/td><td class=\"ts-num\">0.95-1.05<\/td><td class=\"ts-num\">1.80-2.20<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">0.90-2.20<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.90-1.40<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">A6<\/td><td class=\"ts-uns ts-num\">T30106<\/td><td class=\"ts-num\">0.65-0.75<\/td><td class=\"ts-num\">1.80-2.50<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">0.90-1.20<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.90-1.40<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">A7<\/td><td class=\"ts-uns ts-num\">T30107<\/td><td class=\"ts-num\">2.00-2.85<\/td><td class=\"ts-num\">0.80 max<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">5.00-5.75<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.90-1.40<\/td><td class=\"ts-num\">0.50-1.50<\/td><td class=\"ts-num\">3.90-5.15<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">A8<\/td><td class=\"ts-uns ts-num\">T30108<\/td><td class=\"ts-num\">0.50-0.60<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">0.75-1.10<\/td><td class=\"ts-num\">4.75-5.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">1.15-1.65<\/td><td class=\"ts-num\">1.00-1.50<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">A9<\/td><td class=\"ts-uns ts-num\">T30109<\/td><td class=\"ts-num\">0.45-0.55<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">0.95-1.15<\/td><td class=\"ts-num\">4.75-5.50<\/td><td class=\"ts-num\">1.25-1.75<\/td><td class=\"ts-num\">1.30-1.80<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.80-1.40<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">A10<\/td><td class=\"ts-uns ts-num\">T30110<\/td><td class=\"ts-num\">1.25-1.50 <span class=\"ts-sup\">(c)<\/span><\/td><td class=\"ts-num\">1.60-2.10<\/td><td class=\"ts-num\">1.00-1.50<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">1.55-2.05<\/td><td class=\"ts-num\">1.25-1.75<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr class=\"ts-group\"><td colspan=\"11\">High-carbon, high-chromium cold-work steels (D series)<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2<\/td><td class=\"ts-uns ts-num\">T30402<\/td><td class=\"ts-num\">1.40-1.60<\/td><td class=\"ts-num\">0.60 max<\/td><td class=\"ts-num\">0.60 max<\/td><td class=\"ts-num\">11.00-13.00<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.70-1.20<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">1.10 max<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">D3<\/td><td class=\"ts-uns ts-num\">T30403<\/td><td class=\"ts-num\">2.00-2.35<\/td><td class=\"ts-num\">0.60 max<\/td><td class=\"ts-num\">0.60 max<\/td><td class=\"ts-num\">11.00-13.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">1.00 max<\/td><td class=\"ts-num\">1.00 max<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">D4<\/td><td class=\"ts-uns ts-num\">T30404<\/td><td class=\"ts-num\">2.05-2.40<\/td><td class=\"ts-num\">0.60 max<\/td><td class=\"ts-num\">0.60 max<\/td><td class=\"ts-num\">11.00-13.00<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.70-1.20<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">1.00 max<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">D5<\/td><td class=\"ts-uns ts-num\">T30405<\/td><td class=\"ts-num\">1.40-1.60<\/td><td class=\"ts-num\">0.60 max<\/td><td class=\"ts-num\">0.60 max<\/td><td class=\"ts-num\">11.00-13.00<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.70-1.20<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">1.00 max<\/td><td class=\"ts-num\">2.50-3.50<\/td><\/tr>\n<tr><td class=\"ts-grade\">D7<\/td><td class=\"ts-uns ts-num\">T30407<\/td><td class=\"ts-num\">2.15-2.50<\/td><td class=\"ts-num\">0.60 max<\/td><td class=\"ts-num\">0.60 max<\/td><td class=\"ts-num\">11.50-13.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.70-1.20<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">3.80-4.40<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr class=\"ts-group\"><td colspan=\"11\">Oil-hardening cold-work steels (O series)<\/td><\/tr>\n<tr><td class=\"ts-grade\">O1<\/td><td class=\"ts-uns ts-num\">T31501<\/td><td class=\"ts-num\">0.85-1.00<\/td><td class=\"ts-num\">1.00-1.40<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">0.40-0.60<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.40-0.60<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">O2<\/td><td class=\"ts-uns ts-num\">T31502<\/td><td class=\"ts-num\">0.85-0.95<\/td><td class=\"ts-num\">1.40-1.80<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">O6<\/td><td class=\"ts-uns ts-num\">T31506<\/td><td class=\"ts-num\">1.25-1.55 <span class=\"ts-sup\">(c)<\/span><\/td><td class=\"ts-num\">0.30-1.10<\/td><td class=\"ts-num\">0.55-1.50<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.20-0.30<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">O7<\/td><td class=\"ts-uns ts-num\">T31507<\/td><td class=\"ts-num\">1.10-1.30<\/td><td class=\"ts-num\">1.00 max<\/td><td class=\"ts-num\">0.60 max<\/td><td class=\"ts-num\">0.35-0.85<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">1.00-2.00<\/td><td class=\"ts-num\">0.40 max<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr class=\"ts-group\"><td colspan=\"11\">Shock-resisting steels (S series)<\/td><\/tr>\n<tr><td class=\"ts-grade\">S1<\/td><td class=\"ts-uns ts-num\">T41901<\/td><td class=\"ts-num\">0.40-0.55<\/td><td class=\"ts-num\">0.10-0.40<\/td><td class=\"ts-num\">0.15-1.20<\/td><td class=\"ts-num\">1.00-1.80<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">1.50-3.00<\/td><td class=\"ts-num\">0.15-0.30<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">S2<\/td><td class=\"ts-uns ts-num\">T41902<\/td><td class=\"ts-num\">0.40-0.55<\/td><td class=\"ts-num\">0.30-0.50<\/td><td class=\"ts-num\">0.90-1.20<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.30 max<\/td><td class=\"ts-num\">0.30-0.60<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">S5<\/td><td class=\"ts-uns ts-num\">T41905<\/td><td class=\"ts-num\">0.50-0.65<\/td><td class=\"ts-num\">0.60-1.00<\/td><td class=\"ts-num\">1.75-2.25<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.20-1.35<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.35 max<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">S6<\/td><td class=\"ts-uns ts-num\">T41906<\/td><td class=\"ts-num\">0.40-0.50<\/td><td class=\"ts-num\">1.20-1.50<\/td><td class=\"ts-num\">2.00-2.50<\/td><td class=\"ts-num\">1.20-1.50<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.30-0.50<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">S7<\/td><td class=\"ts-uns ts-num\">T41907<\/td><td class=\"ts-num\">0.45-0.55<\/td><td class=\"ts-num\">0.20-0.90<\/td><td class=\"ts-num\">0.20-1.00<\/td><td class=\"ts-num\">3.00-3.50<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">1.30-1.80<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.20-0.30 <span class=\"ts-sup\">(d)<\/span><\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr class=\"ts-group\"><td colspan=\"11\">Low-alloy special-purpose steels (L series)<\/td><\/tr>\n<tr><td class=\"ts-grade\">L2<\/td><td class=\"ts-uns ts-num\">T61202<\/td><td class=\"ts-num\">0.45-1.00 <span class=\"ts-sup\">(b)<\/span><\/td><td class=\"ts-num\">0.10-0.90<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">0.70-1.20<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.25 max<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.10-0.30<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">L6<\/td><td class=\"ts-uns ts-num\">T61206<\/td><td class=\"ts-num\">0.65-0.75<\/td><td class=\"ts-num\">0.25-0.80<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">0.60-1.20<\/td><td class=\"ts-num\">1.25-2.00<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.20-0.30 <span class=\"ts-sup\">(d)<\/span><\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr class=\"ts-group\"><td colspan=\"11\">Low-carbon mold steels (P series)<\/td><\/tr>\n<tr><td class=\"ts-grade\">P2<\/td><td class=\"ts-uns ts-num\">T51602<\/td><td class=\"ts-num\">0.10 max<\/td><td class=\"ts-num\">0.10-0.40<\/td><td class=\"ts-num\">0.10-0.40<\/td><td class=\"ts-num\">0.75-1.25<\/td><td class=\"ts-num\">0.10-0.50<\/td><td class=\"ts-num\">0.15-0.40<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">P3<\/td><td class=\"ts-uns ts-num\">T51603<\/td><td class=\"ts-num\">0.10 max<\/td><td class=\"ts-num\">0.20-0.60<\/td><td class=\"ts-num\">0.40 max<\/td><td class=\"ts-num\">0.40-0.75<\/td><td class=\"ts-num\">1.00-1.50<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">P4<\/td><td class=\"ts-uns ts-num\">T51604<\/td><td class=\"ts-num\">0.12 max<\/td><td class=\"ts-num\">0.20-0.60<\/td><td class=\"ts-num\">0.10-0.40<\/td><td class=\"ts-num\">4.00-5.25<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.40-1.00<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">P5<\/td><td class=\"ts-uns ts-num\">T51605<\/td><td class=\"ts-num\">0.10 max<\/td><td class=\"ts-num\">0.20-0.60<\/td><td class=\"ts-num\">0.40 max<\/td><td class=\"ts-num\">2.00-2.50<\/td><td class=\"ts-num\">0.35 max<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">P6<\/td><td class=\"ts-uns ts-num\">T51606<\/td><td class=\"ts-num\">0.05-0.15<\/td><td class=\"ts-num\">0.35-0.70<\/td><td class=\"ts-num\">0.10-0.40<\/td><td class=\"ts-num\">1.25-1.75<\/td><td class=\"ts-num\">3.25-3.75<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20<\/td><td class=\"ts-uns ts-num\">T51620<\/td><td class=\"ts-num\">0.28-0.40<\/td><td class=\"ts-num\">0.60-1.00<\/td><td class=\"ts-num\">0.20-0.80<\/td><td class=\"ts-num\">1.40-2.00<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.30-0.55<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">P21<\/td><td class=\"ts-uns ts-num\">T51621<\/td><td class=\"ts-num\">0.18-0.22<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">0.20-0.40<\/td><td class=\"ts-num\">0.50 max<\/td><td class=\"ts-num\">3.90-4.25<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">—<\/td><td class=\"ts-num\">0.15-0.25<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr class=\"ts-group\"><td colspan=\"11\">Water-hardening tool steels (W series)<\/td><\/tr>\n<tr><td class=\"ts-grade\">W1<\/td><td class=\"ts-uns ts-num\">T72301<\/td><td class=\"ts-num\">0.70-1.50 <span class=\"ts-sup\">(e)<\/span><\/td><td class=\"ts-num\">0.10-0.40<\/td><td class=\"ts-num\">0.10-0.40<\/td><td class=\"ts-num\">0.15 max<\/td><td class=\"ts-num\">0.20 max<\/td><td class=\"ts-num\">0.10 max<\/td><td class=\"ts-num\">0.15 max<\/td><td class=\"ts-num\">0.10 max<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">W2<\/td><td class=\"ts-uns ts-num\">T72302<\/td><td class=\"ts-num\">0.85-1.50 <span class=\"ts-sup\">(e)<\/span><\/td><td class=\"ts-num\">0.10-0.40<\/td><td class=\"ts-num\">0.10-0.40<\/td><td class=\"ts-num\">0.15 max<\/td><td class=\"ts-num\">0.20 max<\/td><td class=\"ts-num\">0.10 max<\/td><td class=\"ts-num\">0.15 max<\/td><td class=\"ts-num\">0.15-0.35<\/td><td class=\"ts-num\">—<\/td><\/tr>\n<tr><td class=\"ts-grade\">W5<\/td><td class=\"ts-uns ts-num\">T72305<\/td><td class=\"ts-num\">1.05-1.15<\/td><td class=\"ts-num\">0.10-0.40<\/td><td class=\"ts-num\">0.10-0.40<\/td><td class=\"ts-num\">0.40-0.60<\/td><td class=\"ts-num\">0.20 max<\/td><td class=\"ts-num\">0.10 max<\/td><td class=\"ts-num\">0.15 max<\/td><td class=\"ts-num\">0.10 max<\/td><td class=\"ts-num\">—<\/td><\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n <ul class=\"ts-notes-list\">\n<li><sup>(a)<\/sup> All steels except group W contain 0.25% max Cu, 0.03% max P and 0.03% max S; group W steels contain 0.20% max Cu, 0.025% max P and 0.025% max S. Where specified, sulfur may be increased to 0.06–0.15% to improve machinability of group A, D, H, M and T steels.<\/li>\n<li><sup>(b)<\/sup> Available in several carbon ranges.<\/li>\n<li><sup>(c)<\/sup> Contains free graphite in the microstructure.<\/li>\n<li><sup>(d)<\/sup> Optional.<\/li>\n<li><sup>(e)<\/sup> Specified carbon ranges are designated by suffix numbers.<\/li>\n <\/ul>\n <div class=\"ts-disclaimer\">\n <h3>Table notes<\/h3>\n <p>P21 additionally contains 1.05–1.25% Al (aluminum), specified for resistance to heat checking; Al is not shown as a separate column above.<\/p>\n <p>Two values in the source table were printed with a missing decimal point and are corrected here: M10 chromium reads “3.75-450” in the source and is given as 3.75–4.50; A9 molybdenum reads “1.30-180” and is given as 1.30–1.80.<\/p>\n <p>Composition limits are heat analysis values from the source. Product analysis tolerances may apply — confirm the governing standard (ASTM A681, A600 or A686, or the applicable national standard) with your supplier before ordering.<\/p>\n <p>Grade-level limits for individual steels, such as the <a href=\"https:\/\/aobosteel.com\/h13-steel-composition\/\">H13 chemical composition<\/a> range, are listed on the grade pages.<\/p>\n <\/div>\n <div class=\"ts-rel\">\n <h3>Related reference pages<\/h3>\n <p><a href=\"\/d2-tool-steel\/\">D2 tool steel<\/a> · <a href=\"\/h13-tool-steel\/\">H13 tool steel<\/a> · <a href=\"\/o1-tool-steel\/\">O1 tool steel<\/a> · <a href=\"\/tool-steel-equivalent-grades\/\">Tool steel equivalent grades<\/a> · <a href=\"\/tool-steel-properties-chart\/\">Tool steel properties chart<\/a> · <a href=\"\/tool-steel-heat-treatment-guide\/\">Tool steel heat treatment guide<\/a> · <a href=\"\/tool-steel-annealing-normalizing-temperature-chart\/\">Annealing & normalizing temperature chart<\/a> · <a href=\"\/tool-steel-processing-characteristics\/\">Processing & service characteristics<\/a> · <a href=\"\/how-to-select-tool-steels\/\">How to select tool steels<\/a> · <a href=\"\/tool-steels\/\">Tool steels overview<\/a> · <a href=\"\/stainless-steel-composition-chart\/\">Stainless steel composition chart<\/a><\/p>\n <\/div>\n <p class=\"ts-source\">Source: ASM Handbook, Volume 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys, Table 1 “Composition limits of principal types of tool steels” (10th ed.). Reference data for comparison — verify the applicable standard before ordering.<\/p>\n <\/div>\n <\/div>\n <\/div>\n<\/section>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"<p>Tool Steel Composition Chart (AISI M, T, H, A, D, O, S, L, P, W) | Aobo Steel Tool Steel Reference Data Tool Steel Composition Chart Chemical composition limits for the principal AISI tool steel types — the M, T, H, A, D, O, S, L, P and W groups. Values are cast or heat […]<\/p>\n","protected":false},"author":1,"featured_media":0,"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":"","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-18234","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.4 (Yoast SEO v28.4) - 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