{"id":20284,"date":"2026-09-30T02:09:31","date_gmt":"2026-09-29T18:09:31","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=20284"},"modified":"2026-09-30T02:12:49","modified_gmt":"2026-09-29T18:12:49","slug":"hot-work-tool-steel-physical-properties","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/hot-work-tool-steel-physical-properties\/","title":{"rendered":"Propriedades F\u00edsicas do A\u00e7o Ferramenta para Trabalho a Quente"},"content":{"rendered":"\n<style>\n\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    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100%);box-shadow: 0 18px 45px rgba(12,86,208,0.20);display: flex;align-items: center;justify-content: space-between;gap: 20px;flex-wrap: wrap}.entry-content[class] .aobo-final-cta h2{margin: 0 0 12px !important;font-size: 26px !important;color: #ffffff !important}.entry-content[class] .aobo-final-cta p{margin: 0}.entry-content[class] .aobo-final-cta .aobo-btn-primary{background: #ffffff;border-color: #ffffff;color: var(--ds-blue) !important}.entry-content[class] .aobo-final-cta .aobo-btn-secondary{background: transparent;border-color: rgba(255,255,255,0.75);color: #ffffff !important}.entry-content[class] .ts-hero{background: transparent !important;border: 0 !important;border-radius: 0 !important;box-shadow: none !important}.entry-content[class] .ts-hero-top{background: linear-gradient(135deg,#ffffff 0%,#f7fbff 56%,#eaf2ff 100%) !important;border: 1px solid var(--ds-border) !important;border-radius: 28px !important;padding: 42px 38px !important;margin: 0 0 24px !important;box-shadow: 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!important;border: 1px solid var(--ds-border) !important;border-radius: 999px !important;background: #ffffff !important;color: var(--ds-blue) !important;font-family: var(--ds-font-head) !important;font-size: 13px !important;font-weight: 700 !important;letter-spacing: 0 !important;text-transform: none !important}.entry-content[class] .ts-p,.entry-content[class] .card-desc,.entry-content[class] .aobo-strip-intro,.entry-content[class] .schema-faq-answer{font-family: var(--ds-font-body) !important;font-size: 17px !important;line-height: 1.7 !important;font-weight: 400 !important}.entry-content[class] .lead,.entry-content[class] .fund-lead{font-family: var(--ds-font-body) !important;font-size: 19px !important;line-height: 1.65 !important;font-weight: 400 !important}.entry-content[class] .ts-h2{font-family: var(--ds-font-head) !important;font-size: 30px !important;line-height: 1.25 !important;font-weight: 400 !important;color: var(--ds-blue-deep) !important;margin: 44px 0 16px !important}.entry-content[class] .ts-h3{font-family: var(--ds-font-head) !important;font-size: 23px !important;line-height: 1.3 !important;font-weight: 400 !important;color: var(--ds-blue-deep) !important;margin: 30px 0 12px !important}.entry-content[class] .card-grade{font-family: var(--ds-font-head) !important;font-size: 23px !important;line-height: 1.25 !important;font-weight: 700 !important}.entry-content[class] .schema-faq-question{font-family: var(--ds-font-head) !important;font-size: 19px !important;line-height: 1.4 !important;font-weight: 700 !important;color: var(--ds-blue-deep) !important}.entry-content[class] .ts-source,.entry-content[class] .ts-hint,.entry-content[class] .ts-placeholder,.entry-content[class] .ht-spec-label,.entry-content[class] .ht-spec-value,.entry-content[class] .ht-step-indicator,.entry-content[class] .ht-badge,.entry-content[class] .idx,.entry-content[class] .xlink,.entry-content[class] .cat-note,.entry-content[class] .aobo-card-note,.entry-content[class] .card-desig,.entry-content[class] .k,.entry-content[class] .v,.entry-content[class] .note,.entry-content[class] .aobo-note{font-family: var(--ds-font-head) !important;font-size: 15px !important;line-height: 1.6 !important;font-weight: 400 !important}.entry-content[class] .ht-spec-label,.entry-content[class] .idx,.entry-content[class] .k{font-weight: 700 !important}.entry-content[class] .aobo-note,.entry-content[class] .note{font-family: var(--ds-font-body) !important;color: var(--ds-muted) !important}.entry-content[class] .chip{font-family: var(--ds-font-head) !important;font-size: 13px !important;font-weight: 700 !important}.entry-content[class] .kicker,.entry-content[class] .eyebrow,.entry-content[class] .aobo-eyebrow{display: inline-flex !important;align-items: center;gap: 7px;margin: 0 0 14px !important;padding: 6px 14px !important;border: 1px solid var(--ds-border) !important;border-radius: 999px !important;background: #ffffff !important;color: var(--ds-blue) !important;font-family: var(--ds-font-head) !important;font-size: 13px !important;font-weight: 700 !important;letter-spacing: 0 !important;text-transform: none !important}@media (max-width: 760px){.entry-content[class] h1{font-size: clamp(22px,6.4vw,min(34px,var(--h1-max,34px))) !important}.entry-content[class] h2{font-size: 25px !important}.entry-content[class] h3{font-size: 20px !important}.entry-content[class] h4{font-size: 17px !important}.entry-content[class] p,.entry-content[class] li{font-size: 16px !important}.entry-content[class] table th,.entry-content[class] table td{font-size: 14px !important;padding: 11px 12px !important}.entry-content[class] .aobo-hero{padding: 30px 22px}.entry-content[class] .aobo-final-cta{padding: 26px 22px}.entry-content[class] .aobo-final-cta .aobo-btn{width: 100%}}\n<\/style>\n<section class=\"aobo-ht-ref ts-props\">\n<div class=\"aobo-wrap\">\n<div class=\"ts-hero\">\n<div class=\"ts-hero-top\">\n<div class=\"ts-kicker\"><span><\/span>Hot Work | 1.2343 to 1.2367<\/div>\n<h1 style=\"--h1-max:64px\">Hot Work Tool Steel Physical Properties<\/h1>\n<p>Specific heat capacity, thermal conductivity, density, electrical resistivity and modulus of elasticity measured in four chromium hot work tool steels, in the annealed and the heat treated condition. A reference summary of published practice and not an Aobo Steel specification.<\/p><\/div>\n<div class=\"ts-tool-area\">\n<h2 class=\"ts-h2\">What these figures are used for<\/h2>\n<p class=\"ts-p\">A die block is designed, heated and cooled by numbers. Specific heat and density set how much energy it takes to bring the block up to the austenitizing temperature and how much the furnace has to put in. Thermal conductivity sets how fast heat leaves the surface during the quench and how steep the temperature difference across the section becomes. Elastic modulus sets how far the block deflects under the clamping and casting loads, and electrical resistivity matters where a die is spark eroded or has to be located electrically.<\/p>\n<p class=\"ts-p\">All four grades in this set are chromium hot work steels. 1.2343 and 1.2344 are the compositions known in the AISI system as H11 and H13, and 1.2365 and 1.2367 are the members of the same family carrying more chromium and molybdenum. Everything below was measured on these four grades only, so a grade outside the set has to be judged from its own datasheet.<\/p>\n<h2 class=\"ts-h2\">Specific heat capacity<\/h2>\n<p class=\"ts-p\">The values climb with temperature across the whole range for 1.2344 and 1.2365. On 1.2343 and 1.2367 they climb to about 500 to 600 \u00b0C and then fall back a little, which is the shape the source prints and it is reproduced as printed. The spread between the four grades is about 150 J per kg per K at 100 \u00b0C and closes to about 75 J per kg per K at 1000 \u00b0C, so a furnace calculation done at room temperature overstates the difference between these grades.<\/p>\n<h3 class=\"ts-h3\">Specific heat capacity in the annealed condition, J per kg per K<\/h3>\n<div class=\"ts-table-wrap\">\n<table class=\"ts-table\" style=\"min-width:980px;\">\n<thead><tr><th>Steel grade<\/th><th>100 \u00b0C<\/th><th>150 \u00b0C<\/th><th>200 \u00b0C<\/th><th>250 \u00b0C<\/th><th>300 \u00b0C<\/th><th>350 \u00b0C<\/th><th>400 \u00b0C<\/th><th>500 \u00b0C<\/th><th>600 \u00b0C<\/th><th>700 \u00b0C<\/th><th>800 \u00b0C<\/th><th>900 \u00b0C<\/th><th>1000 \u00b0C<\/th><\/tr><\/thead>\n<tbody><tr><td>1.2343<\/td><td class=\"ts-num\">523<\/td><td class=\"ts-num\">525<\/td><td class=\"ts-num\">530<\/td><td class=\"ts-num\">532<\/td><td class=\"ts-num\">535<\/td><td class=\"ts-num\">540<\/td><td class=\"ts-num\">540<\/td><td class=\"ts-num\">544<\/td><td class=\"ts-num\">544<\/td><td class=\"ts-num\">544<\/td><td class=\"ts-num\">544<\/td><td class=\"ts-num\">536<\/td><td class=\"ts-num\">536<\/td><\/tr><tr><td>1.2344<\/td><td class=\"ts-num\">523<\/td><td class=\"ts-num\">545<\/td><td class=\"ts-num\">555<\/td><td class=\"ts-num\">580<\/td><td class=\"ts-num\">595<\/td><td class=\"ts-num\">600<\/td><td class=\"ts-num\">607<\/td><td class=\"ts-num\">615<\/td><td class=\"ts-num\">615<\/td><td class=\"ts-num\">620<\/td><td class=\"ts-num\">624<\/td><td class=\"ts-num\">628<\/td><td class=\"ts-num\">628<\/td><\/tr><tr><td>1.2365<\/td><td class=\"ts-num\">481<\/td><td class=\"ts-num\">490<\/td><td class=\"ts-num\">505<\/td><td class=\"ts-num\">520<\/td><td class=\"ts-num\">530<\/td><td class=\"ts-num\">535<\/td><td class=\"ts-num\">545<\/td><td class=\"ts-num\">553<\/td><td class=\"ts-num\">553<\/td><td class=\"ts-num\">553<\/td><td class=\"ts-num\">553<\/td><td class=\"ts-num\">553<\/td><td class=\"ts-num\">553<\/td><\/tr><tr><td>1.2367<\/td><td class=\"ts-num\">536<\/td><td class=\"ts-num\">550<\/td><td class=\"ts-num\">565<\/td><td class=\"ts-num\">575<\/td><td class=\"ts-num\">585<\/td><td class=\"ts-num\">595<\/td><td class=\"ts-num\">610<\/td><td class=\"ts-num\">620<\/td><td class=\"ts-num\">607<\/td><td class=\"ts-num\">599<\/td><td class=\"ts-num\">595<\/td><td class=\"ts-num\">582<\/td><td class=\"ts-num\">584<\/td><\/tr><\/tbody>\n<\/table>\n<\/div>\n<p class=\"ts-tcap\"><em>Source, specific heat capacity in the annealed condition, item 1 of the physical property set, printed page 4-26 of the report (PDF page 87).<\/em><\/p>\n<p class=\"ts-tcap\"><em>Values are in J per kg per K and apply to the annealed condition, as stated by the source. A reference table only, it is not an Aobo Steel specification.<\/em><\/p>\n<h2 class=\"ts-h2\">Thermal conductivity<\/h2>\n<p class=\"ts-p\">Conductivity is given in two conditions because it follows the structure. On all four grades the heat treated bar conducts less than the annealed bar, by between about 1 and 3 W per metre per kelvin across the range measured here. This is the property that decides how quickly a die face can pass heat into the quench medium and how much of the face temperature is carried by the steel behind it rather than by the medium in front of it.<\/p>\n<h3 class=\"ts-h3\">Thermal conductivity in the annealed and heat treated states, W per m per K<\/h3>\n<div class=\"ts-table-wrap\">\n<table class=\"ts-table\" style=\"min-width:820px;\">\n<thead><tr><th>Steel grade<\/th><th>State<\/th><th>100 \u00b0C<\/th><th>200 \u00b0C<\/th><th>300 \u00b0C<\/th><th>400 \u00b0C<\/th><th>500 \u00b0C<\/th><th>600 \u00b0C<\/th><th>700 \u00b0C<\/th><\/tr><\/thead>\n<tbody><tr><td>1.2343<\/td><td>Annealed<\/td><td class=\"ts-num\">29.85<\/td><td class=\"ts-num\">30.73<\/td><td class=\"ts-num\">30.98<\/td><td class=\"ts-num\">31.02<\/td><td class=\"ts-num\">31.48<\/td><td class=\"ts-num\">32.32<\/td><td class=\"ts-num\">33.41<\/td><\/tr><tr><td>1.2343<\/td><td>Heat treated<\/td><td class=\"ts-num\">26.80<\/td><td class=\"ts-num\">27.84<\/td><td class=\"ts-num\">27.47<\/td><td class=\"ts-num\">27.30<\/td><td class=\"ts-num\">28.26<\/td><td class=\"ts-num\">29.31<\/td><td class=\"ts-num\">30.35<\/td><\/tr><tr><td>1.2344<\/td><td>Annealed<\/td><td class=\"ts-num\">27.21<\/td><td class=\"ts-num\">28.09<\/td><td class=\"ts-num\">29.22<\/td><td class=\"ts-num\">30.14<\/td><td class=\"ts-num\">31.74<\/td><td class=\"ts-num\">34.08<\/td><td class=\"ts-num\">36.51<\/td><\/tr><tr><td>1.2344<\/td><td>Heat treated<\/td><td class=\"ts-num\">25.47<\/td><td class=\"ts-num\">27.10<\/td><td class=\"ts-num\">28.86<\/td><td class=\"ts-num\">29.89<\/td><td class=\"ts-num\">30.99<\/td><td class=\"ts-num\">32.45<\/td><td class=\"ts-num\">34.25<\/td><\/tr><tr><td>1.2365<\/td><td>Annealed<\/td><td class=\"ts-num\">32.87<\/td><td class=\"ts-num\">34.96<\/td><td class=\"ts-num\">35.50<\/td><td class=\"ts-num\">34.12<\/td><td class=\"ts-num\">32.49<\/td><td class=\"ts-num\">32.24<\/td><td class=\"ts-num\">33.20<\/td><\/tr><tr><td>1.2365<\/td><td>Heat treated<\/td><td class=\"ts-num\">31.40<\/td><td class=\"ts-num\">33.91<\/td><td class=\"ts-num\">33.08<\/td><td class=\"ts-num\">31.40<\/td><td class=\"ts-num\">30.14<\/td><td class=\"ts-num\">29.73<\/td><td class=\"ts-num\">29.31<\/td><\/tr><tr><td>1.2367<\/td><td>Annealed<\/td><td class=\"ts-num\">30.56<\/td><td class=\"ts-num\">31.82<\/td><td class=\"ts-num\">32.66<\/td><td class=\"ts-num\">33.49<\/td><td class=\"ts-num\">34.12<\/td><td class=\"ts-num\">34.75<\/td><td class=\"ts-num\">35.17<\/td><\/tr><tr><td>1.2367<\/td><td>Heat treated<\/td><td class=\"ts-num\">29.94<\/td><td class=\"ts-num\">31.19<\/td><td class=\"ts-num\">32.24<\/td><td class=\"ts-num\">33.08<\/td><td class=\"ts-num\">33.91<\/td><td class=\"ts-num\">34.75<\/td><td class=\"ts-num\">35.17<\/td><\/tr><\/tbody>\n<\/table>\n<\/div>\n<p class=\"ts-tcap\"><em>Source, thermal conductivity, item 4 of the physical property set, printed page 4-27 of the report (PDF page 88).<\/em><\/p>\n<p class=\"ts-tcap\"><em>Values are in W per metre per kelvin. Heat treated means quenched and tempered to 43 to 44 HRC, which is the state the source quotes its own figures in. A reference table only, it is not an Aobo Steel specification.<\/em><\/p>\n<h2 class=\"ts-h2\">Density and electrical resistivity<\/h2>\n<p class=\"ts-p\">Density is given in three conditions. Hardening and tempering lower it slightly against the annealed value, by between 0.010 and 0.024 on a base of about 7.73 to 7.85, and a change that small is inside the tolerance of a weight calculation done from a nominal density.<\/p>\n<h3 class=\"ts-h3\">Density in three conditions, kg per cubic metre divided by 1000<\/h3>\n<div class=\"ts-table-wrap\">\n<table class=\"ts-table\" style=\"min-width:620px;\">\n<thead><tr><th>Steel grade<\/th><th>Annealed<\/th><th>Hardened<\/th><th>Heat treated<\/th><\/tr><\/thead>\n<tbody><tr><td>1.2343<\/td><td class=\"ts-num\">7.751<\/td><td class=\"ts-num\">7.740<\/td><td class=\"ts-num\">7.741<\/td><\/tr><tr><td>1.2344<\/td><td class=\"ts-num\">7.735<\/td><td class=\"ts-num\">7.730<\/td><td class=\"ts-num\">7.718<\/td><\/tr><tr><td>1.2365<\/td><td class=\"ts-num\">7.847<\/td><td class=\"ts-num\">7.843<\/td><td class=\"ts-num\">7.823<\/td><\/tr><tr><td>1.2367<\/td><td class=\"ts-num\">7.817<\/td><td class=\"ts-num\">7.805<\/td><td class=\"ts-num\">7.799<\/td><\/tr><\/tbody>\n<\/table>\n<\/div>\n<p class=\"ts-tcap\"><em>Source, density, item 2 of the physical property set, printed page 4-26 of the report (PDF page 87).<\/em><\/p>\n<p class=\"ts-tcap\"><em>Values are in kg per cubic metre, divided by 1000, so 7.751 reads as 7751 kg per cubic metre. A reference table only, it is not an Aobo Steel specification.<\/em><\/p>\n<p class=\"ts-p\">Resistivity is quoted at 20 \u00b0C in the annealed and the heat treated condition, and it rises on hardening in every one of the four grades. The highest value in the set sits about 75 per cent above the lowest, so this is a number that separates the grades rather than grouping them. Values are given in micro-ohm metre, which is one millionth of an ohm metre.<\/p>\n<h3 class=\"ts-h3\">Specific electrical resistivity at 20 \u00b0C, micro-ohm metre<\/h3>\n<div class=\"ts-table-wrap\">\n<table class=\"ts-table\" style=\"min-width:560px;\">\n<thead><tr><th>Steel grade<\/th><th>Annealed<\/th><th>Heat treated<\/th><\/tr><\/thead>\n<tbody><tr><td>1.2343<\/td><td class=\"ts-num\">0.471<\/td><td class=\"ts-num\">0.481<\/td><\/tr><tr><td>1.2344<\/td><td class=\"ts-num\">0.520<\/td><td class=\"ts-num\">0.532<\/td><\/tr><tr><td>1.2365<\/td><td class=\"ts-num\">0.303<\/td><td class=\"ts-num\">0.308<\/td><\/tr><tr><td>1.2367<\/td><td class=\"ts-num\">0.366<\/td><td class=\"ts-num\">0.397<\/td><\/tr><\/tbody>\n<\/table>\n<\/div>\n<p class=\"ts-tcap\"><em>Source, specific electric resistivity, item 5 of the physical property set, printed page 4-27 of the report (PDF page 88).<\/em><\/p>\n<p class=\"ts-tcap\"><em>Values are in micro-ohm metre, one millionth of an ohm metre. The source prints the same set as 4.71, 4.81, 5.20, 5.32, 3.03, 3.08, 3.66 and 3.97, each times ten to the minus seven ohm metre, and the order of the eight values is unchanged here. A reference table only, it is not an Aobo Steel specification.<\/em><\/p>\n<h2 class=\"ts-h2\">Modulus of elasticity<\/h2>\n<p class=\"ts-p\">The modulus is given at room temperature in the three conditions. Cooling a block fast enough to harden it leaves the room temperature modulus below the annealed figure, by between about 9 and 21 kN per square millimetre depending on the grade.<\/p>\n<h3 class=\"ts-h3\">Modulus of elasticity at 20 \u00b0C, N per square mm divided by 1000<\/h3>\n<div class=\"ts-table-wrap\">\n<table class=\"ts-table\" style=\"min-width:620px;\">\n<thead><tr><th>Steel grade<\/th><th>Annealed<\/th><th>Hardened<\/th><th>Heat treated<\/th><\/tr><\/thead>\n<tbody><tr><td>1.2343<\/td><td class=\"ts-num\">217.3<\/td><td class=\"ts-num\">206.6<\/td><td class=\"ts-num\">215.6<\/td><\/tr><tr><td>1.2344<\/td><td class=\"ts-num\">216.9<\/td><td class=\"ts-num\">207.8<\/td><td class=\"ts-num\">216.2<\/td><\/tr><tr><td>1.2365<\/td><td class=\"ts-num\">217.9<\/td><td class=\"ts-num\">208.0<\/td><td class=\"ts-num\">213.2<\/td><\/tr><tr><td>1.2367<\/td><td class=\"ts-num\">227.1<\/td><td class=\"ts-num\">205.8<\/td><td class=\"ts-num\">215.7<\/td><\/tr><\/tbody>\n<\/table>\n<\/div>\n<p class=\"ts-tcap\"><em>Source, modulus of elasticity at 20 \u00b0C, item 6 of the physical property set, printed page 4-27 of the report (PDF page 88).<\/em><\/p>\n<p class=\"ts-tcap\"><em>Values are in N per square millimetre, divided by 1000, so 217.3 reads as 217300 N per square millimetre. A reference table only, it is not an Aobo Steel specification.<\/em><\/p>\n<p class=\"ts-p\">Against temperature the modulus falls away steadily and the four grades stay close together. On the two grades with a value printed at 700 \u00b0C the drop from 20 to 700 \u00b0C is between 52 and 55 kN per square millimetre, which is a fall of about a quarter. That is the reason a hot die block deflects further than a cold one under the same load, and it is the number to put into a deflection calculation for a block that runs hot.<\/p>\n<h3 class=\"ts-h3\">Modulus of elasticity against test temperature in the heat treated state<\/h3>\n<div class=\"ts-table-wrap\">\n<table class=\"ts-table\" style=\"min-width:820px;\">\n<thead><tr><th>Steel grade<\/th><th>20 \u00b0C<\/th><th>100 \u00b0C<\/th><th>200 \u00b0C<\/th><th>300 \u00b0C<\/th><th>400 \u00b0C<\/th><th>500 \u00b0C<\/th><th>600 \u00b0C<\/th><th>700 \u00b0C<\/th><\/tr><\/thead>\n<tbody><tr><td>1.2343<\/td><td class=\"ts-num\">215.6<\/td><td class=\"ts-num\">211.2<\/td><td class=\"ts-num\">205.2<\/td><td class=\"ts-num\">198.8<\/td><td class=\"ts-num\">192.2<\/td><td class=\"ts-num\">184.3<\/td><td class=\"ts-num\">173.6<\/td><td class=\"ts-num\">n\/a<\/td><\/tr><tr><td>1.2344<\/td><td class=\"ts-num\">216.2<\/td><td class=\"ts-num\">211.6<\/td><td class=\"ts-num\">205.8<\/td><td class=\"ts-num\">199.5<\/td><td class=\"ts-num\">193.0<\/td><td class=\"ts-num\">184.9<\/td><td class=\"ts-num\">173.6<\/td><td class=\"ts-num\">161.0<\/td><\/tr><tr><td>1.2365<\/td><td class=\"ts-num\">213.2<\/td><td class=\"ts-num\">209.4<\/td><td class=\"ts-num\">202.7<\/td><td class=\"ts-num\">196.5<\/td><td class=\"ts-num\">191.0<\/td><td class=\"ts-num\">183.0<\/td><td class=\"ts-num\">173.1<\/td><td class=\"ts-num\">160.9<\/td><\/tr><tr><td>1.2367<\/td><td class=\"ts-num\">215.7<\/td><td class=\"ts-num\">212.1<\/td><td class=\"ts-num\">205.5<\/td><td class=\"ts-num\">199.4<\/td><td class=\"ts-num\">193.5<\/td><td class=\"ts-num\">185.0<\/td><td class=\"ts-num\">174.4<\/td><td class=\"ts-num\">n\/a<\/td><\/tr><\/tbody>\n<\/table>\n<\/div>\n<p class=\"ts-tcap\"><em>Source, modulus of elasticity against test temperature in the heat treated state, item 7 of the physical property set, printed page 4-27 of the report (PDF page 88).<\/em><\/p>\n<p class=\"ts-tcap\"><em>Values are in N per square millimetre, divided by 1000. The source prints no value for two cells and they are marked n\/a here. A reference table only, it is not an Aobo Steel specification.<\/em><\/p>\n<h2 class=\"ts-h2\">Reading the tables<\/h2>\n<p class=\"ts-p\">The heat treated condition in the conductivity, resistivity and elasticity tables means quenched and tempered to a hardness of 43 to 44 HRC, which is what the source states for its own figures. A die put into service at a higher hardness will not follow these numbers exactly, and a nitrided die will not either, because nitriding puts a hard case over a softer core and the case carries its own properties.<\/p>\n<p class=\"ts-p\">Two cells in the elasticity table carry no value, for 1.2343 and 1.2367 at 700 \u00b0C, and they are marked n\/a because the source prints nothing there. The heat treated conductivity of 1.2367 also converges on its own annealed value at 600 and 700 \u00b0C, which is how the source prints the pair.<\/p>\n<div class=\"ts-dl\">\n          <div class=\"ts-dl-txt\"><strong>Hot Work Tool Steel Physical Properties, printable PDF<\/strong>\n          All six tables on this page, specific heat, thermal conductivity, density, electrical resistivity and elastic modulus for 1.2343, 1.2344, 1.2365 and 1.2367, in one PDF with our contact details.<\/div>\n          <a class=\"ts-dl-btn\" href=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/09\/Aobo-Steel-Hot-Work-Tool-Steel-Physical-Properties.pdf\" download>\n            <svg viewBox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M12 3v12m0 0 4.5-4.5M12 15l-4.5-4.5M4 20h16\"\/><\/svg>\n            Download PDF, 449 KB\n          <\/a>\n        <\/div>\n<h2 class=\"ts-h2\">Related reference data<\/h2>\n<p class=\"ts-p\">The grade behind two of these columns is set out on the <a href=\"https:\/\/aobosteel.com\/h13-tool-steel\/\">H13 tool steel page<\/a> and the <a href=\"https:\/\/aobosteel.com\/h11-tool-steel\/\">H11 tool steel page<\/a>, and the cycle that produces the heat treated condition is on the <a href=\"https:\/\/aobosteel.com\/h13-steel-heat-treatment\/\">H13 heat treatment guide<\/a>. The difference between 1.2344 and 1.2367 for a given die is worked through on the <a href=\"https:\/\/aobosteel.com\/h13-vs-1-2367-tool-steel\/\">H13 against 1.2367 page<\/a>. Mean thermal expansion and density for a longer list of tool steel grades is on the <a href=\"https:\/\/aobosteel.com\/tool-steel-density-thermal-expansion\/\">density and thermal expansion chart<\/a>, and conductivity for seven other grades is on the <a href=\"https:\/\/aobosteel.com\/tool-steel-thermal-conductivity\/\">thermal conductivity chart<\/a>.<\/p>\n<p class=\"ts-source\">Reference data compiled from Improved Life of Die Casting Dies of H13 Steel by Attaining Improved Mechanical Properties and Distortion Control During Heat Treatment (J. F. Wallace and D. Schwam, US Department of Energy final report DOE\/ID\/13320-3, October 1998). The physical property set is printed on pages 4-26 and 4-27 of that report, which are PDF pages 87 and 88. Every figure on this page was read from the page images rather than from an automatic text layer.<\/p>\n<\/div><\/div><\/div><\/section>\n\n","protected":false},"excerpt":{"rendered":"<p>Hot Work | 1.2343 to 1.2367 Hot Work Tool Steel Physical Properties Specific heat capacity, thermal conductivity, density, electrical resistivity and modulus of elasticity measured in four chromium hot work tool steels, in the annealed and the heat treated condition. A reference summary of published practice and not an Aobo Steel specification. What these figures [&hellip;]<\/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":"default","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":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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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-20284","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO 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Work | 1.2343 to 1.2367 Hot Work Tool Steel Physical Properties Specific heat capacity, thermal conductivity, density, electrical resistivity and modulus of elasticity measured in four chromium hot work tool steels, in the annealed and the heat treated condition. 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