AISI Type H13 Hot Work Tool Steel
Categories: Metal; Ferrous Metal; Tool Steel; Hot Work Steel
Material Notes: High hardenability, excellent wear resistance and hot toughness. H13 has good thermal shock resistance and will tolerate some water cooling in service. Nitriding improves hardness, but can diminish shock resistance if hardened layer is too thick. Electroslag Remelted (ESR) H13 has greater homogeneity and an exceptionally fine structure, resulting in improved machinability, polishability and high temperature tensile strength.

Applications: hot work applications: pressure die casting tools, extrusion tools, forging dies, hot shear blades, stamping dies, plastic molds. ESR H13 is great for aluminum die-casting tools and plastic mold tools requiring a very high polish.

Weldability: Pre and Post-heating recommended, can be welded with oxy-acetylene, inert shielded gas and shielded metal arc; Filler should be similar to the base metal.
Key Words: UNS T20813, ASTM A681, FED QQ-T-570, BS 4659 BH13, BS 4659 H13, BS EN ISO 4957 :2000 X40CrMoV5-1, Werkstoff 1.2344
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Physical PropertiesMetricEnglishComments
Density 7.80 g/cc0.282 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell C 28 - 3028 - 30air or oil quenched and tempered at 705°C (1300°F).
 31 - 3331 - 33air or oil quenched and tempered at 675°C (1250°F).
 39 - 4139 - 41air or oil quenched and tempered at 650°C (1200°F).
 45 - 4745 - 47air or oil quenched and tempered at 620°C (1150°F).
 49 - 5149 - 51air or oil quenched and tempered at 595°C (1100°F).
 51 - 5351 - 53air or oil quenched and tempered at 565°C (1050°F).
 51 - 5351 - 53air quenched from 1025°C (1875°F) or oil quenched from 1010°C (1850°F) with no temper, or tempered for 1 hour at 315°C (600°F), 425°C (800°F), and 480°C (900°F).
 52 - 5452 - 54air or oil quenched and tempered at 510°C (950°F) and 540°C (1000°F).
Tensile Strength, Ultimate 1990 MPa289000 psiat HRC = 55 (air or oil quenched from 995-1025°C )
Tensile Strength, Yield 1650 MPa239000 psiat HRC = 55 (air or oil quenched from 995-1025°C )
Elongation at Break 9.0 %9.0 %at HRC = 55 (air or oil quenched from 995-1025°C )
Modulus of Elasticity 210 GPa30500 ksi
Bulk Modulus 160 GPa23200 ksiTypical for steel.
Poissons Ratio 0.300.30Calculated
Machinability 50 %50 %Based on 1% carbon steel. as 100% machinability
Shear Modulus 81.0 GPa11700 ksiEstimated from elastic modulus
 
Thermal PropertiesMetricEnglishComments
CTE, linear  11.0 µm/m-°C
@Temperature 25.0 - 95.0 °C		6.11 µin/in-°F
@Temperature 77.0 - 203 °F
 11.5 µm/m-°C
@Temperature 25.0 - 205 °C		6.39 µin/in-°F
@Temperature 77.0 - 401 °F
 12.4 µm/m-°C
@Temperature 25.0 - 540 °C		6.89 µin/in-°F
@Temperature 77.0 - 1000 °F
Specific Heat Capacity 0.460 J/g-°C
@Temperature 0.000 - 100 °C		0.110 BTU/lb-°F
@Temperature 32.0 - 212 °F
Thermal Conductivity  24.3 W/m-K
@Temperature 215 °C		169 BTU-in/hr-ft²-°F
@Temperature 419 °F
 24.3 W/m-K
@Temperature 475 °C		169 BTU-in/hr-ft²-°F
@Temperature 887 °F
 24.4 W/m-K
@Temperature 350 °C		169 BTU-in/hr-ft²-°F
@Temperature 662 °F
 24.7 W/m-K
@Temperature 605 °C		171 BTU-in/hr-ft²-°F
@Temperature 1120 °F
 
Processing PropertiesMetricEnglishComments
Processing Temperature 540 - 650 °C1000 - 1200 °FTempering Temperature
 995 - 1040 °C1820 - 1900 °FHardening Temperature
Annealing Temperature 850 - 870 °C
@Time 14400 sec		1560 - 1600 °F
@Time 4.00 hour		furnace cool < 20°C/hour
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.32 - 0.40 %0.32 - 0.40 %
Chromium, Cr 5.13 - 5.25 %5.13 - 5.25 %
Iron, Fe >= 90.9 %>= 90.9 %as remainder
Molybdenum, Mo 1.33 - 1.4 %1.33 - 1.4 %
Silicon, Si 1.0 %1.0 %
Vanadium, V 1.0 %1.0 %
 
Descriptive Properties
Stress Relieving Temperature600 - 650°C for 2 hours (approx.)cool in still air; always stress relief before hardening.

References for this datasheet.

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