Tool Steel Density and Thermal Expansion Chart | Aobo Steel<\/title>\n<meta name=\"description\" content=\"Density (g\/cm3, lb\/in3) and thermal expansion (microm\/m-K, microin\/in-F) of 57 tool steels - W, S, O, A, D, H, T, M, L and P types including D2, O1, A2, H13 and M2.\">\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; --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 Neue\",Arial,sans-serif;\n font-size:15px;line-height:1.6;}\n\n \/* Root scope \u2014 WordPress theme guard *\/\n 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Reference Data<\/div>\n <h1>Tool Steel Density and Thermal Expansion Chart<\/h1>\n <p>Density and mean thermal expansion for 57 tool steels — water-, shock-, oil-, air-hardening, cold-work (D), hot-work (H), high-speed (T, M), special-purpose (L) and mold (P) types. Both metric (g\/cm³, µm\/m·K) and imperial (lb\/in.³, µin.\/in.·°F) values are listed, for die and tooling design that involves thermal growth or weight.<\/p>\n <\/div>\n <div class=\"ts-tool-area\">\n <div class=\"ts-legend\">\n <span><b>g\/cm³ \/ lb\/in.³<\/b> density at room temperature<\/span>\n <span><b>µm\/m·K<\/b> expansion from 20 °C<\/span>\n <span><b>µin.\/in.·°F<\/b> expansion from 70 °F<\/span>\n <span><b>(a)–(d)<\/b> other base temperatures<\/span>\n <\/div>\n <div class=\"ts-table-wrap\">\n <table class=\"ts-table\">\n <thead>\n <tr><th>Type<\/th><th>Density<br>g\/cm³<\/th><th>Density<br>lb\/in.³<\/th><th>µm\/m·K<br>20→100 °C<\/th><th>µm\/m·K<br>→200 °C<\/th><th>µm\/m·K<br>→425 °C<\/th><th>µm\/m·K<br>→540 °C<\/th><th>µm\/m·K<br>→650 °C<\/th><th>µin.\/in.·°F<br>70→200 °F<\/th><th>µin.\/in.·°F<br>→400 °F<\/th><th>µin.\/in.·°F<br>→800 °F<\/th><th>µin.\/in.·°F<br>→1000 °F<\/th><th>µin.\/in.·°F<br>→1200 °F<\/th><\/tr>\n <\/thead>\n <tbody>\n<tr><td class=\"ts-grade\">W1<\/td><td class=\"ts-num\">7.84<\/td><td class=\"ts-num\">0.282<\/td><td class=\"ts-num\">10.4<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num\">13.1<\/td><td class=\"ts-num\">13.8<sup>(a)<\/sup><\/td><td class=\"ts-num\">14.2<sup>(b)<\/sup><\/td><td class=\"ts-num\">5.76<\/td><td class=\"ts-num\">6.13<\/td><td class=\"ts-num\">7.28<\/td><td class=\"ts-num\">7.64<sup>(a)<\/sup><\/td><td class=\"ts-num\">7.90<sup>(b)<\/sup><\/td><\/tr>\n<tr><td class=\"ts-grade\">W2<\/td><td class=\"ts-num\">7.85<\/td><td class=\"ts-num\">0.283<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">14.4<\/td><td class=\"ts-num\">14.8<\/td><td class=\"ts-num\">14.9<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">8.0<\/td><td class=\"ts-num\">8.2<\/td><td class=\"ts-num\">8.3<\/td><\/tr>\n<tr><td class=\"ts-grade\">S1<\/td><td class=\"ts-num\">7.88<\/td><td class=\"ts-num\">0.285<span class=\"ts-fix\">•<\/span><\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">13.5<\/td><td class=\"ts-num\">13.9<\/td><td class=\"ts-num\">14.2<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.5<\/td><td class=\"ts-num\">7.7<\/td><td class=\"ts-num\">7.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">S2<\/td><td class=\"ts-num\">7.79<\/td><td class=\"ts-num\">0.281<\/td><td class=\"ts-num\">10.9<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num\">13.5<\/td><td class=\"ts-num\">14.0<\/td><td class=\"ts-num\">14.2<\/td><td class=\"ts-num\">6.0<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num\">7.5<\/td><td class=\"ts-num\">7.8<\/td><td class=\"ts-num\">7.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">S5<\/td><td class=\"ts-num\">7.76<\/td><td class=\"ts-num\">0.280<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">13.3<\/td><td class=\"ts-num\">13.7<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.4<\/td><td class=\"ts-num\">7.6<\/td><\/tr>\n<tr><td class=\"ts-grade\">S6<\/td><td class=\"ts-num\">7.75<\/td><td class=\"ts-num\">0.279<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">13.3<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">S7<\/td><td class=\"ts-num\">7.76<\/td><td class=\"ts-num\">0.280<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">13.3<\/td><td class=\"ts-num\">13.7<sup>(a)<\/sup><\/td><td class=\"ts-num\">13.3<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.4<\/td><td class=\"ts-num\">7.6<sup>(a)<\/sup><\/td><td class=\"ts-num\">7.4<\/td><\/tr>\n<tr><td class=\"ts-grade\">O1<\/td><td class=\"ts-num\">7.85<\/td><td class=\"ts-num\">0.283<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">10.6<sup>(c)<\/sup><\/td><td class=\"ts-num\">12.8<\/td><td class=\"ts-num\">14.0<sup>(d)<\/sup><\/td><td class=\"ts-num\">14.4<sup>(d)<\/sup><\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">5.9<sup>(c)<\/sup><\/td><td class=\"ts-num\">7.1<\/td><td class=\"ts-num\">7.8<sup>(d)<\/sup><\/td><td class=\"ts-num\">8.0<sup>(d)<\/sup><\/td><\/tr>\n<tr><td class=\"ts-grade\">O2<\/td><td class=\"ts-num\">7.66<\/td><td class=\"ts-num\">0.277<\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">13.9<\/td><td class=\"ts-num\">14.6<\/td><td class=\"ts-num\">15.1<\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.7<\/td><td class=\"ts-num\">8.1<\/td><td class=\"ts-num\">8.4<\/td><\/tr>\n<tr><td class=\"ts-grade\">O6<\/td><td class=\"ts-num\">7.70<\/td><td class=\"ts-num\">0.277<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">12.9<\/td><td class=\"ts-num\">13.7<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.2<\/td><td class=\"ts-num\">7.6<\/td><\/tr>\n<tr><td class=\"ts-grade\">O7<\/td><td class=\"ts-num\">7.8<\/td><td class=\"ts-num\">0.282<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">A2<\/td><td class=\"ts-num\">7.86<\/td><td class=\"ts-num\">0.284<\/td><td class=\"ts-num\">10.7<\/td><td class=\"ts-num\">10.6<sup>(c)<\/sup><\/td><td class=\"ts-num\">12.9<\/td><td class=\"ts-num\">14.0<\/td><td class=\"ts-num\">14.2<\/td><td class=\"ts-num\">5.96<\/td><td class=\"ts-num\">5.9<sup>(c)<\/sup><\/td><td class=\"ts-num\">7.2<\/td><td class=\"ts-num\">7.8<\/td><td class=\"ts-num\">7.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">A6<\/td><td class=\"ts-num\">7.84<\/td><td class=\"ts-num\">0.283<\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">13.5<\/td><td class=\"ts-num\">13.9<\/td><td class=\"ts-num\">14.2<\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.5<\/td><td class=\"ts-num\">7.7<\/td><td class=\"ts-num\">7.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">A7<\/td><td class=\"ts-num\">7.66<\/td><td class=\"ts-num\">0.277<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">12.9<\/td><td class=\"ts-num\">13.5<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.2<\/td><td class=\"ts-num\">7.5<\/td><\/tr>\n<tr><td class=\"ts-grade\">A8<\/td><td class=\"ts-num\">7.87<\/td><td class=\"ts-num\">0.284<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.0<\/td><\/tr>\n<tr><td class=\"ts-grade\">A9<\/td><td class=\"ts-num\">7.78<\/td><td class=\"ts-num\">0.281<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.0<\/td><\/tr>\n<tr><td class=\"ts-grade\">A10<\/td><td class=\"ts-num\">7.68<\/td><td class=\"ts-num\">0.278<\/td><td class=\"ts-num\">12.8<\/td><td class=\"ts-num\">13.3<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">7.1<\/td><td class=\"ts-num\">7.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2<\/td><td class=\"ts-num\">7.70<\/td><td class=\"ts-num\">0.278<\/td><td class=\"ts-num\">10.4<\/td><td class=\"ts-num\">10.3<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num\">5.8<\/td><td class=\"ts-num\">5.7<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num\">6.8<\/td><td class=\"ts-num\">6.8<\/td><\/tr>\n<tr><td class=\"ts-grade\">D3<\/td><td class=\"ts-num\">7.70<\/td><td class=\"ts-num\">0.278<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">11.7<\/td><td class=\"ts-num\">12.9<\/td><td class=\"ts-num\">13.1<\/td><td class=\"ts-num\">13.5<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.5<\/td><td class=\"ts-num\">7.2<\/td><td class=\"ts-num\">7.3<\/td><td class=\"ts-num\">7.5<\/td><\/tr>\n<tr><td class=\"ts-grade\">D4<\/td><td class=\"ts-num\">7.70<\/td><td class=\"ts-num\">0.278<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">D5<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.7<\/td><\/tr>\n<tr><td class=\"ts-grade\">H10<\/td><td class=\"ts-num\">7.81<\/td><td class=\"ts-num\">0.281<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num\">13.3<\/td><td class=\"ts-num\">13.7<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.8<\/td><td class=\"ts-num\">7.4<\/td><td class=\"ts-num\">7.6<\/td><\/tr>\n<tr><td class=\"ts-grade\">H11<\/td><td class=\"ts-num\">7.75<\/td><td class=\"ts-num\">0.280<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">12.8<\/td><td class=\"ts-num\">12.9<\/td><td class=\"ts-num\">13.3<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.1<\/td><td class=\"ts-num\">7.2<\/td><td class=\"ts-num\">7.4<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13<\/td><td class=\"ts-num\">7.76<\/td><td class=\"ts-num\">0.280<\/td><td class=\"ts-num\">10.4<\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">13.1<\/td><td class=\"ts-num\">5.8<\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num\">6.8<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.3<\/td><\/tr>\n<tr><td class=\"ts-grade\">H14<\/td><td class=\"ts-num\">7.89<\/td><td class=\"ts-num\">0.285<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">H19<\/td><td class=\"ts-num\">7.98<\/td><td class=\"ts-num\">0.288<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">12.9<\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.2<\/td><\/tr>\n<tr><td class=\"ts-grade\">H21<\/td><td class=\"ts-num\">8.28<\/td><td class=\"ts-num\">0.299<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">12.9<\/td><td class=\"ts-num\">13.5<\/td><td class=\"ts-num\">13.9<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.2<\/td><td class=\"ts-num\">7.5<\/td><td class=\"ts-num\">7.7<\/td><\/tr>\n<tr><td class=\"ts-grade\">H22<\/td><td class=\"ts-num\">8.36<\/td><td class=\"ts-num\">0.302<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">H26<\/td><td class=\"ts-num\">8.67<\/td><td class=\"ts-num\">0.313<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">H42<\/td><td class=\"ts-num\">8.15<\/td><td class=\"ts-num\">0.295<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">T1<\/td><td class=\"ts-num\">8.67<\/td><td class=\"ts-num\">0.313<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">9.7<\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num\">11.7<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">5.4<\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num\">6.5<\/td><td class=\"ts-num\">6.6<\/td><\/tr>\n<tr><td class=\"ts-grade\">T2<\/td><td class=\"ts-num\">8.67<\/td><td class=\"ts-num\">0.313<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">T4<\/td><td class=\"ts-num\">8.68<\/td><td class=\"ts-num\">0.313<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">T5<\/td><td class=\"ts-num\">8.75<\/td><td class=\"ts-num\">0.316<\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">T6<\/td><td class=\"ts-num\">8.89<\/td><td class=\"ts-num\">0.321<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">T8<\/td><td class=\"ts-num\">8.43<\/td><td class=\"ts-num\">0.305<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">T15<\/td><td class=\"ts-num\">8.19<\/td><td class=\"ts-num\">0.296<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">9.9<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">5.5<sup>(c)<\/sup><\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">M1<\/td><td class=\"ts-num\">7.89<\/td><td class=\"ts-num\">0.285<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">10.6<sup>(c)<\/sup><\/td><td class=\"ts-num\">11.3<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">5.9<sup>(c)<\/sup><\/td><td class=\"ts-num\">6.3<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">M2<\/td><td class=\"ts-num\">8.16<\/td><td class=\"ts-num\">0.295<\/td><td class=\"ts-num\">10.1<\/td><td class=\"ts-num\">9.4<sup>(c)<\/sup><\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num\">5.6<\/td><td class=\"ts-num\">5.2<sup>(c)<\/sup><\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num\">6.8<\/td><\/tr>\n<tr><td class=\"ts-grade\">M3, class 1<\/td><td class=\"ts-num\">8.15<\/td><td class=\"ts-num\">0.295<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.8<\/td><\/tr>\n<tr><td class=\"ts-grade\">M3, class 2<\/td><td class=\"ts-num\">8.16<\/td><td class=\"ts-num\">0.295<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.8<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">7.1<\/td><\/tr>\n<tr><td class=\"ts-grade\">M4<\/td><td class=\"ts-num\">7.97<\/td><td class=\"ts-num\">0.288<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">9.5<sup>(c)<\/sup><\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">5.3<sup>(c)<\/sup><\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.8<\/td><\/tr>\n<tr><td class=\"ts-grade\">M7<\/td><td class=\"ts-num\">7.95<\/td><td class=\"ts-num\">0.287<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">9.5<sup>(c)<\/sup><\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">5.3<sup>(c)<\/sup><\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num\">6.8<\/td><td class=\"ts-num\">6.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">M10<\/td><td class=\"ts-num\">7.88<\/td><td class=\"ts-num\">0.285<span class=\"ts-fix\">•<\/span><\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num\">6.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">M30<\/td><td class=\"ts-num\">8.01<\/td><td class=\"ts-num\">0.289<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num\">11.7<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num\">6.5<\/td><td class=\"ts-num\">6.8<\/td><\/tr>\n<tr><td class=\"ts-grade\">M33<\/td><td class=\"ts-num\">8.03<\/td><td class=\"ts-num\">0.290<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num\">11.7<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num\">6.5<\/td><td class=\"ts-num\">6.7<\/td><\/tr>\n<tr><td class=\"ts-grade\">M36<\/td><td class=\"ts-num\">8.18<\/td><td class=\"ts-num\">0.296<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">M41<\/td><td class=\"ts-num\">8.17<\/td><td class=\"ts-num\">0.295<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">9.7<\/td><td class=\"ts-num\">10.4<\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">5.4<\/td><td class=\"ts-num\">5.8<\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">M42<\/td><td class=\"ts-num\">7.98<\/td><td class=\"ts-num\">0.288<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">M46<\/td><td class=\"ts-num\">7.83<\/td><td class=\"ts-num\">0.283<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">M47<\/td><td class=\"ts-num\">7.96<\/td><td class=\"ts-num\">0.288<\/td><td class=\"ts-num\">10.6<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">5.9<\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">7.0<\/td><\/tr>\n<tr><td class=\"ts-grade\">L2<\/td><td class=\"ts-num\">7.86<\/td><td class=\"ts-num\">0.284<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">14.4<\/td><td class=\"ts-num\">14.6<\/td><td class=\"ts-num\">14.8<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">8.0<\/td><td class=\"ts-num\">8.1<\/td><td class=\"ts-num\">8.2<\/td><\/tr>\n<tr><td class=\"ts-grade\">L6<\/td><td class=\"ts-num\">7.86<\/td><td class=\"ts-num\">0.284<\/td><td class=\"ts-num\">11.3<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">13.5<\/td><td class=\"ts-num\">13.7<\/td><td class=\"ts-num\">6.3<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.5<\/td><td class=\"ts-num\">7.6<\/td><\/tr>\n<tr><td class=\"ts-grade\">P2<\/td><td class=\"ts-num\">7.86<\/td><td class=\"ts-num\">0.284<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">13.7<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">7.6<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">P5<\/td><td class=\"ts-num\">7.80<\/td><td class=\"ts-num\">0.282<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">P6<\/td><td class=\"ts-num\">7.85<\/td><td class=\"ts-num\">0.284<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20<\/td><td class=\"ts-num\">7.85<\/td><td class=\"ts-num\">0.284<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.8<\/td><td class=\"ts-num\">13.7<\/td><td class=\"ts-num\">14.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">7.1<\/td><td class=\"ts-num\">7.6<\/td><td class=\"ts-num\">7.9<\/td><\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n <ul class=\"ts-notes-list\">\n<li><sup>(a)<\/sup> From 20 °C to 500 °C (70 °F to 930 °F).<\/li>\n <li><sup>(b)<\/sup> From 20 °C to 600 °C (70 °F to 1110 °F).<\/li>\n <li><sup>(c)<\/sup> From 20 °C to 260 °C (70 °F to 500 °F).<\/li>\n <li><sup>(d)<\/sup> From 40 °C (100 °F).<\/li>\n <\/ul>\n <div class=\"ts-disclaimer\">\n <h3>Table notes<\/h3>\n <p>Density is given at room temperature. Thermal expansion is the mean coefficient between the base temperature (20 °C \/ 70 °F unless marked with a footnote) and the temperature shown in the column heading.<\/p>\n <p>Dashes indicate values not given in the source table.<\/p>\n <p><b>• Source correction:<\/b> the source prints 0.255 lb\/in.³ for S1 and M10, which is inconsistent with 7.88 g\/cm³ (0.285 lb\/in.³). The tabulated 0.285 value is shown here; the original figure is noted for traceability.<\/p>\n <p><b>Note:<\/b> footnote (d) is printed in the source as “From 40 ° (100 °F)” with the degree unit missing; it is shown here as 40 °C (100 °F).<\/p>\n <p>The low-expansion cold-work grades (D2\/D3, H13, M-series) sit near 10.4–12.4 µm\/m·K, while the high-carbon water- and oil-hardening grades and L2 reach 13–15 µm\/m·K — relevant when sizing dies, fixtures and tooling that see service heat. Verify against the applicable heat treatment before design use.<\/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=\"\/d3-tool-steel\/\">D3 tool steel<\/a> · <a href=\"\/o1-tool-steel\/\">O1 tool steel<\/a> · <a href=\"\/h13-tool-steel\/\">H13 tool steel<\/a> · <a href=\"\/h11-tool-steel\/\">H11 tool steel<\/a> · <a href=\"\/h10-tool-steel\/\">H10 tool steel<\/a> · <a href=\"\/s7-tool-steel\/\">S7 tool steel<\/a> · <a href=\"\/m2-tool-steel\/\">M2 tool steel<\/a> · <a href=\"\/tool-steel-properties-chart\/\">Tool steel properties chart<\/a> · <a href=\"\/tool-steel-hot-hardness-chart\/\">Tool steel hot hardness chart<\/a> · <a href=\"\/tool-steel-hardening-tempering-chart\/\">Tool steel hardening and tempering chart<\/a> · <a href=\"\/hot-work-tool-steel-softening-resistance\/\">Hot-work tool steel softening resistance<\/a> · <a href=\"\/tool-steel-thermal-conductivity\/\">Tool steel thermal conductivity 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 11 “Density and thermal expansion of selected tool steels” (10th ed., pp. 1814–1817). Reference data for comparison — verify the applicable heat treatment before design use.<\/p>\n <\/div>\n <\/div>\n <\/div>\n<\/section>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"<p>Tool Steel Density and Thermal Expansion Chart | Aobo Steel Tool Steel Reference Data Tool Steel Density and Thermal Expansion Chart Density and mean thermal expansion for 57 tool steels — water-, shock-, oil-, air-hardening, cold-work (D), hot-work (H), high-speed (T, M), special-purpose (L) and mold (P) types. Both metric (g\/cm³, µm\/m·K) and imperial (lb\/in.³, […]<\/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-18269","page","type-page","status-publish","hentry"],"yoast_head":"\n<title>Tool Steel Density & Thermal Expansion Chart - AoboSteel<\/title>\n<meta name=\"description\" content=\"Density and thermal expansion data for 57 tool steels \u2014 D2, D3, O1, A2, H13, M2 and more. g\/cm\u00b3 and lb\/in\u00b3, \u00b5m\/m\u00b7K and \u00b5in.\/in.\u00b7\u00b0F. 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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 table.ts-table td{padding:.32em .5em;}\n table.ts-table thead th{font-size:.8em;padding:.5em .5em;}\n table.ts-table td.ts-num{white-space:nowrap;}\n table.ts-table td.ts-miss{color:#b6b6b6;}\n .ts-props a{color:var(--aobo-blue) !important;text-decoration:none !important;}\n .ts-props a:hover{text-decoration:underline !important;}\n sup{font-size:.68em;}\n .ts-fix{color:var(--aobo-blue);font-size:.6em;vertical-align:super;margin-left:1px;}\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 Density and Thermal Expansion Chart<\/h1>\n <p>Density and mean thermal expansion for 57 tool steels — water-, shock-, oil-, air-hardening, cold-work (D), hot-work (H), high-speed (T, M), special-purpose (L) and mold (P) types. Both metric (g\/cm³, µm\/m·K) and imperial (lb\/in.³, µin.\/in.·°F) values are listed, for die and tooling design that involves thermal growth or weight.<\/p>\n <\/div>\n <div class=\"ts-tool-area\">\n <div class=\"ts-legend\">\n <span><b>g\/cm³ \/ lb\/in.³<\/b> density at room temperature<\/span>\n <span><b>µm\/m·K<\/b> expansion from 20 °C<\/span>\n <span><b>µin.\/in.·°F<\/b> expansion from 70 °F<\/span>\n <span><b>(a)–(d)<\/b> other base temperatures<\/span>\n <\/div>\n <div class=\"ts-table-wrap\">\n <table class=\"ts-table\">\n <thead>\n <tr><th>Type<\/th><th>Density<br>g\/cm³<\/th><th>Density<br>lb\/in.³<\/th><th>µm\/m·K<br>20→100 °C<\/th><th>µm\/m·K<br>→200 °C<\/th><th>µm\/m·K<br>→425 °C<\/th><th>µm\/m·K<br>→540 °C<\/th><th>µm\/m·K<br>→650 °C<\/th><th>µin.\/in.·°F<br>70→200 °F<\/th><th>µin.\/in.·°F<br>→400 °F<\/th><th>µin.\/in.·°F<br>→800 °F<\/th><th>µin.\/in.·°F<br>→1000 °F<\/th><th>µin.\/in.·°F<br>→1200 °F<\/th><\/tr>\n <\/thead>\n <tbody>\n<tr><td class=\"ts-grade\">W1<\/td><td class=\"ts-num\">7.84<\/td><td class=\"ts-num\">0.282<\/td><td class=\"ts-num\">10.4<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num\">13.1<\/td><td class=\"ts-num\">13.8<sup>(a)<\/sup><\/td><td class=\"ts-num\">14.2<sup>(b)<\/sup><\/td><td class=\"ts-num\">5.76<\/td><td class=\"ts-num\">6.13<\/td><td class=\"ts-num\">7.28<\/td><td class=\"ts-num\">7.64<sup>(a)<\/sup><\/td><td class=\"ts-num\">7.90<sup>(b)<\/sup><\/td><\/tr>\n<tr><td class=\"ts-grade\">W2<\/td><td class=\"ts-num\">7.85<\/td><td class=\"ts-num\">0.283<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">14.4<\/td><td class=\"ts-num\">14.8<\/td><td class=\"ts-num\">14.9<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">8.0<\/td><td class=\"ts-num\">8.2<\/td><td class=\"ts-num\">8.3<\/td><\/tr>\n<tr><td class=\"ts-grade\">S1<\/td><td class=\"ts-num\">7.88<\/td><td class=\"ts-num\">0.285<span class=\"ts-fix\">•<\/span><\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">13.5<\/td><td class=\"ts-num\">13.9<\/td><td class=\"ts-num\">14.2<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.5<\/td><td class=\"ts-num\">7.7<\/td><td class=\"ts-num\">7.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">S2<\/td><td class=\"ts-num\">7.79<\/td><td class=\"ts-num\">0.281<\/td><td class=\"ts-num\">10.9<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num\">13.5<\/td><td class=\"ts-num\">14.0<\/td><td class=\"ts-num\">14.2<\/td><td class=\"ts-num\">6.0<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num\">7.5<\/td><td class=\"ts-num\">7.8<\/td><td class=\"ts-num\">7.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">S5<\/td><td class=\"ts-num\">7.76<\/td><td class=\"ts-num\">0.280<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">13.3<\/td><td class=\"ts-num\">13.7<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.4<\/td><td class=\"ts-num\">7.6<\/td><\/tr>\n<tr><td class=\"ts-grade\">S6<\/td><td class=\"ts-num\">7.75<\/td><td class=\"ts-num\">0.279<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">13.3<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">S7<\/td><td class=\"ts-num\">7.76<\/td><td class=\"ts-num\">0.280<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">13.3<\/td><td class=\"ts-num\">13.7<sup>(a)<\/sup><\/td><td class=\"ts-num\">13.3<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.4<\/td><td class=\"ts-num\">7.6<sup>(a)<\/sup><\/td><td class=\"ts-num\">7.4<\/td><\/tr>\n<tr><td class=\"ts-grade\">O1<\/td><td class=\"ts-num\">7.85<\/td><td class=\"ts-num\">0.283<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">10.6<sup>(c)<\/sup><\/td><td class=\"ts-num\">12.8<\/td><td class=\"ts-num\">14.0<sup>(d)<\/sup><\/td><td class=\"ts-num\">14.4<sup>(d)<\/sup><\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">5.9<sup>(c)<\/sup><\/td><td class=\"ts-num\">7.1<\/td><td class=\"ts-num\">7.8<sup>(d)<\/sup><\/td><td class=\"ts-num\">8.0<sup>(d)<\/sup><\/td><\/tr>\n<tr><td class=\"ts-grade\">O2<\/td><td class=\"ts-num\">7.66<\/td><td class=\"ts-num\">0.277<\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">13.9<\/td><td class=\"ts-num\">14.6<\/td><td class=\"ts-num\">15.1<\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.7<\/td><td class=\"ts-num\">8.1<\/td><td class=\"ts-num\">8.4<\/td><\/tr>\n<tr><td class=\"ts-grade\">O6<\/td><td class=\"ts-num\">7.70<\/td><td class=\"ts-num\">0.277<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">12.9<\/td><td class=\"ts-num\">13.7<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.2<\/td><td class=\"ts-num\">7.6<\/td><\/tr>\n<tr><td class=\"ts-grade\">O7<\/td><td class=\"ts-num\">7.8<\/td><td class=\"ts-num\">0.282<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">A2<\/td><td class=\"ts-num\">7.86<\/td><td class=\"ts-num\">0.284<\/td><td class=\"ts-num\">10.7<\/td><td class=\"ts-num\">10.6<sup>(c)<\/sup><\/td><td class=\"ts-num\">12.9<\/td><td class=\"ts-num\">14.0<\/td><td class=\"ts-num\">14.2<\/td><td class=\"ts-num\">5.96<\/td><td class=\"ts-num\">5.9<sup>(c)<\/sup><\/td><td class=\"ts-num\">7.2<\/td><td class=\"ts-num\">7.8<\/td><td class=\"ts-num\">7.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">A6<\/td><td class=\"ts-num\">7.84<\/td><td class=\"ts-num\">0.283<\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">13.5<\/td><td class=\"ts-num\">13.9<\/td><td class=\"ts-num\">14.2<\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.5<\/td><td class=\"ts-num\">7.7<\/td><td class=\"ts-num\">7.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">A7<\/td><td class=\"ts-num\">7.66<\/td><td class=\"ts-num\">0.277<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">12.9<\/td><td class=\"ts-num\">13.5<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.2<\/td><td class=\"ts-num\">7.5<\/td><\/tr>\n<tr><td class=\"ts-grade\">A8<\/td><td class=\"ts-num\">7.87<\/td><td class=\"ts-num\">0.284<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.0<\/td><\/tr>\n<tr><td class=\"ts-grade\">A9<\/td><td class=\"ts-num\">7.78<\/td><td class=\"ts-num\">0.281<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.0<\/td><\/tr>\n<tr><td class=\"ts-grade\">A10<\/td><td class=\"ts-num\">7.68<\/td><td class=\"ts-num\">0.278<\/td><td class=\"ts-num\">12.8<\/td><td class=\"ts-num\">13.3<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">7.1<\/td><td class=\"ts-num\">7.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">D2<\/td><td class=\"ts-num\">7.70<\/td><td class=\"ts-num\">0.278<\/td><td class=\"ts-num\">10.4<\/td><td class=\"ts-num\">10.3<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num\">5.8<\/td><td class=\"ts-num\">5.7<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num\">6.8<\/td><td class=\"ts-num\">6.8<\/td><\/tr>\n<tr><td class=\"ts-grade\">D3<\/td><td class=\"ts-num\">7.70<\/td><td class=\"ts-num\">0.278<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">11.7<\/td><td class=\"ts-num\">12.9<\/td><td class=\"ts-num\">13.1<\/td><td class=\"ts-num\">13.5<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.5<\/td><td class=\"ts-num\">7.2<\/td><td class=\"ts-num\">7.3<\/td><td class=\"ts-num\">7.5<\/td><\/tr>\n<tr><td class=\"ts-grade\">D4<\/td><td class=\"ts-num\">7.70<\/td><td class=\"ts-num\">0.278<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">D5<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.7<\/td><\/tr>\n<tr><td class=\"ts-grade\">H10<\/td><td class=\"ts-num\">7.81<\/td><td class=\"ts-num\">0.281<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num\">13.3<\/td><td class=\"ts-num\">13.7<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.8<\/td><td class=\"ts-num\">7.4<\/td><td class=\"ts-num\">7.6<\/td><\/tr>\n<tr><td class=\"ts-grade\">H11<\/td><td class=\"ts-num\">7.75<\/td><td class=\"ts-num\">0.280<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">12.8<\/td><td class=\"ts-num\">12.9<\/td><td class=\"ts-num\">13.3<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.1<\/td><td class=\"ts-num\">7.2<\/td><td class=\"ts-num\">7.4<\/td><\/tr>\n<tr><td class=\"ts-grade\">H13<\/td><td class=\"ts-num\">7.76<\/td><td class=\"ts-num\">0.280<\/td><td class=\"ts-num\">10.4<\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">13.1<\/td><td class=\"ts-num\">5.8<\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num\">6.8<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.3<\/td><\/tr>\n<tr><td class=\"ts-grade\">H14<\/td><td class=\"ts-num\">7.89<\/td><td class=\"ts-num\">0.285<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">H19<\/td><td class=\"ts-num\">7.98<\/td><td class=\"ts-num\">0.288<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">12.9<\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.2<\/td><\/tr>\n<tr><td class=\"ts-grade\">H21<\/td><td class=\"ts-num\">8.28<\/td><td class=\"ts-num\">0.299<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">12.9<\/td><td class=\"ts-num\">13.5<\/td><td class=\"ts-num\">13.9<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.2<\/td><td class=\"ts-num\">7.5<\/td><td class=\"ts-num\">7.7<\/td><\/tr>\n<tr><td class=\"ts-grade\">H22<\/td><td class=\"ts-num\">8.36<\/td><td class=\"ts-num\">0.302<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">H26<\/td><td class=\"ts-num\">8.67<\/td><td class=\"ts-num\">0.313<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.9<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">H42<\/td><td class=\"ts-num\">8.15<\/td><td class=\"ts-num\">0.295<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">T1<\/td><td class=\"ts-num\">8.67<\/td><td class=\"ts-num\">0.313<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">9.7<\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num\">11.7<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">5.4<\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num\">6.5<\/td><td class=\"ts-num\">6.6<\/td><\/tr>\n<tr><td class=\"ts-grade\">T2<\/td><td class=\"ts-num\">8.67<\/td><td class=\"ts-num\">0.313<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">T4<\/td><td class=\"ts-num\">8.68<\/td><td class=\"ts-num\">0.313<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">T5<\/td><td class=\"ts-num\">8.75<\/td><td class=\"ts-num\">0.316<\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">T6<\/td><td class=\"ts-num\">8.89<\/td><td class=\"ts-num\">0.321<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">T8<\/td><td class=\"ts-num\">8.43<\/td><td class=\"ts-num\">0.305<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">T15<\/td><td class=\"ts-num\">8.19<\/td><td class=\"ts-num\">0.296<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">9.9<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">5.5<sup>(c)<\/sup><\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">M1<\/td><td class=\"ts-num\">7.89<\/td><td class=\"ts-num\">0.285<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">10.6<sup>(c)<\/sup><\/td><td class=\"ts-num\">11.3<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">5.9<sup>(c)<\/sup><\/td><td class=\"ts-num\">6.3<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">M2<\/td><td class=\"ts-num\">8.16<\/td><td class=\"ts-num\">0.295<\/td><td class=\"ts-num\">10.1<\/td><td class=\"ts-num\">9.4<sup>(c)<\/sup><\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num\">5.6<\/td><td class=\"ts-num\">5.2<sup>(c)<\/sup><\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num\">6.8<\/td><\/tr>\n<tr><td class=\"ts-grade\">M3, class 1<\/td><td class=\"ts-num\">8.15<\/td><td class=\"ts-num\">0.295<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.8<\/td><\/tr>\n<tr><td class=\"ts-grade\">M3, class 2<\/td><td class=\"ts-num\">8.16<\/td><td class=\"ts-num\">0.295<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.8<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">7.1<\/td><\/tr>\n<tr><td class=\"ts-grade\">M4<\/td><td class=\"ts-num\">7.97<\/td><td class=\"ts-num\">0.288<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">9.5<sup>(c)<\/sup><\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">5.3<sup>(c)<\/sup><\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num\">6.7<\/td><td class=\"ts-num\">6.8<\/td><\/tr>\n<tr><td class=\"ts-grade\">M7<\/td><td class=\"ts-num\">7.95<\/td><td class=\"ts-num\">0.287<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">9.5<sup>(c)<\/sup><\/td><td class=\"ts-num\">11.5<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">5.3<sup>(c)<\/sup><\/td><td class=\"ts-num\">6.4<\/td><td class=\"ts-num\">6.8<\/td><td class=\"ts-num\">6.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">M10<\/td><td class=\"ts-num\">7.88<\/td><td class=\"ts-num\">0.285<span class=\"ts-fix\">•<\/span><\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num\">12.4<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num\">6.9<\/td><\/tr>\n<tr><td class=\"ts-grade\">M30<\/td><td class=\"ts-num\">8.01<\/td><td class=\"ts-num\">0.289<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num\">11.7<\/td><td class=\"ts-num\">12.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num\">6.5<\/td><td class=\"ts-num\">6.8<\/td><\/tr>\n<tr><td class=\"ts-grade\">M33<\/td><td class=\"ts-num\">8.03<\/td><td class=\"ts-num\">0.290<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num\">11.7<\/td><td class=\"ts-num\">12.0<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num\">6.5<\/td><td class=\"ts-num\">6.7<\/td><\/tr>\n<tr><td class=\"ts-grade\">M36<\/td><td class=\"ts-num\">8.18<\/td><td class=\"ts-num\">0.296<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">M41<\/td><td class=\"ts-num\">8.17<\/td><td class=\"ts-num\">0.295<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">9.7<\/td><td class=\"ts-num\">10.4<\/td><td class=\"ts-num\">11.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">5.4<\/td><td class=\"ts-num\">5.8<\/td><td class=\"ts-num\">6.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">M42<\/td><td class=\"ts-num\">7.98<\/td><td class=\"ts-num\">0.288<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">M46<\/td><td class=\"ts-num\">7.83<\/td><td class=\"ts-num\">0.283<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">M47<\/td><td class=\"ts-num\">7.96<\/td><td class=\"ts-num\">0.288<\/td><td class=\"ts-num\">10.6<\/td><td class=\"ts-num\">11.0<\/td><td class=\"ts-num\">11.9<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">5.9<\/td><td class=\"ts-num\">6.1<\/td><td class=\"ts-num\">6.6<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">7.0<\/td><\/tr>\n<tr><td class=\"ts-grade\">L2<\/td><td class=\"ts-num\">7.86<\/td><td class=\"ts-num\">0.284<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">14.4<\/td><td class=\"ts-num\">14.6<\/td><td class=\"ts-num\">14.8<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">8.0<\/td><td class=\"ts-num\">8.1<\/td><td class=\"ts-num\">8.2<\/td><\/tr>\n<tr><td class=\"ts-grade\">L6<\/td><td class=\"ts-num\">7.86<\/td><td class=\"ts-num\">0.284<\/td><td class=\"ts-num\">11.3<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">12.6<\/td><td class=\"ts-num\">13.5<\/td><td class=\"ts-num\">13.7<\/td><td class=\"ts-num\">6.3<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.0<\/td><td class=\"ts-num\">7.5<\/td><td class=\"ts-num\">7.6<\/td><\/tr>\n<tr><td class=\"ts-grade\">P2<\/td><td class=\"ts-num\">7.86<\/td><td class=\"ts-num\">0.284<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">13.7<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">7.6<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">P5<\/td><td class=\"ts-num\">7.80<\/td><td class=\"ts-num\">0.282<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">P6<\/td><td class=\"ts-num\">7.85<\/td><td class=\"ts-num\">0.284<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><\/tr>\n<tr><td class=\"ts-grade\">P20<\/td><td class=\"ts-num\">7.85<\/td><td class=\"ts-num\">0.284<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">12.8<\/td><td class=\"ts-num\">13.7<\/td><td class=\"ts-num\">14.2<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num ts-miss\">\u2014<\/td><td class=\"ts-num\">7.1<\/td><td class=\"ts-num\">7.6<\/td><td class=\"ts-num\">7.9<\/td><\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n <ul class=\"ts-notes-list\">\n<li><sup>(a)<\/sup> From 20 °C to 500 °C (70 °F to 930 °F).<\/li>\n <li><sup>(b)<\/sup> From 20 °C to 600 °C (70 °F to 1110 °F).<\/li>\n <li><sup>(c)<\/sup> From 20 °C to 260 °C (70 °F to 500 °F).<\/li>\n <li><sup>(d)<\/sup> From 40 °C (100 °F).<\/li>\n <\/ul>\n <div class=\"ts-disclaimer\">\n <h3>Table notes<\/h3>\n <p>Density is given at room temperature. Thermal expansion is the mean coefficient between the base temperature (20 °C \/ 70 °F unless marked with a footnote) and the temperature shown in the column heading.<\/p>\n <p>Dashes indicate values not given in the source table.<\/p>\n <p><b>• Source correction:<\/b> the source prints 0.255 lb\/in.³ for S1 and M10, which is inconsistent with 7.88 g\/cm³ (0.285 lb\/in.³). The tabulated 0.285 value is shown here; the original figure is noted for traceability.<\/p>\n <p><b>Note:<\/b> footnote (d) is printed in the source as “From 40 ° (100 °F)” with the degree unit missing; it is shown here as 40 °C (100 °F).<\/p>\n <p>The low-expansion cold-work grades (D2\/D3, H13, M-series) sit near 10.4–12.4 µm\/m·K, while the high-carbon water- and oil-hardening grades and L2 reach 13–15 µm\/m·K — relevant when sizing dies, fixtures and tooling that see service heat. Verify against the applicable heat treatment before design use.<\/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=\"\/d3-tool-steel\/\">D3 tool steel<\/a> · <a href=\"\/o1-tool-steel\/\">O1 tool steel<\/a> · <a href=\"\/h13-tool-steel\/\">H13 tool steel<\/a> · <a href=\"\/h11-tool-steel\/\">H11 tool steel<\/a> · <a href=\"\/h10-tool-steel\/\">H10 tool steel<\/a> · <a href=\"\/s7-tool-steel\/\">S7 tool steel<\/a> · <a href=\"\/m2-tool-steel\/\">M2 tool steel<\/a> · <a href=\"\/tool-steel-properties-chart\/\">Tool steel properties chart<\/a> · <a href=\"\/tool-steel-hot-hardness-chart\/\">Tool steel hot hardness chart<\/a> · <a href=\"\/tool-steel-hardening-tempering-chart\/\">Tool steel hardening and tempering chart<\/a> · <a href=\"\/hot-work-tool-steel-softening-resistance\/\">Hot-work tool steel softening resistance<\/a> · <a href=\"\/tool-steel-thermal-conductivity\/\">Tool steel thermal conductivity 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 11 “Density and thermal expansion of selected tool steels” (10th ed., pp. 1814–1817). Reference data for comparison — verify the applicable heat treatment before design use.<\/p>\n <\/div>\n <\/div>\n <\/div>\n<\/section>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"<p>Tool Steel Density and Thermal Expansion Chart | Aobo Steel Tool Steel Reference Data Tool Steel Density and Thermal Expansion Chart Density and mean thermal expansion for 57 tool steels — water-, shock-, oil-, air-hardening, cold-work (D), hot-work (H), high-speed (T, M), special-purpose (L) and mold (P) types. Both metric (g\/cm³, µm\/m·K) and imperial (lb\/in.³, […]<\/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-18269","page","type-page","status-publish","hentry"],"yoast_head":"\n<title>Tool Steel Density & Thermal Expansion Chart - AoboSteel<\/title>\n<meta name=\"description\" content=\"Density and thermal expansion data for 57 tool steels \u2014 D2, D3, O1, A2, H13, M2 and more. g\/cm\u00b3 and lb\/in\u00b3, \u00b5m\/m\u00b7K and \u00b5in.\/in.\u00b7\u00b0F. 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Both metric (g\/cm³, µm\/m·K) and imperial (lb\/in.³,…","rttpg_featured_image_url":null,"rttpg_author":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/ko\/blog\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"Tool Steel Density and Thermal Expansion Chart | Aobo Steel Tool Steel Reference Data Tool Steel Density and Thermal Expansion Chart Density and mean thermal expansion for 57 tool steels — water-, shock-, oil-, air-hardening, cold-work (D), hot-work (H), high-speed (T, M), special-purpose (L) and mold (P) types. 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