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High Speed Steel
Hot Work Tool Steel
 
 
AISI H10
Category  Steel
Class  Tool steel
Type  Chromium hot work steel
Designations  France: AFNOR 32 DCV 28
Germany: DIN 1.2365
United States: ASTM A681 , FED QQ-T-570 , UNS T20810

Composition
 
Element  Weight % 
C  0.35-0.45 
Mn  0.25-0.70 
Si  0.80-1.20 
Cr  3.00-3.75 
Ni  0.3 
Mo  2.00-3.00 
V  0.25-0.75 
Cu  0.25 
P  0.03 
S  0.03 

Mechanical Properties
 
Properties  Conditions 
T (°C) Treatment
Density (×1000 kg/m3)   7.81 25
Poisson's Ratio   0.27-0.30 25
Elastic Modulus (GPa)   190-210 25

Thermal Properties
 
Properties  Conditions 
T (°C) Treatment
Thermal Expansion (10-6/ºC)   12.2   20-425 

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