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AISI H25
Category Steel
Class Tool steel
Type Tungsten hot work steel
Designations  United States: ASTM A681 , FED QQ-T-570 , UNS T20825

Composition
ElementWeight %
C  0.22-0.32 
Mn  0.15-0.40 
Si  0.15-0.40 
Cr  3.75-4.50 
Ni  0.3 
W  14.00-16.00 
V  0.40-0.60 
Cu  0.25 
P  0.03 
S  0.03 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.7-8.03 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 190-210 25  
Glossary