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AISI D2
Category Steel
Class Tool steel
Type High-carbon, high-chromium cold work steel
Designations  Germany: DIN 1.2379
Italy: UNI KU
United Kingdom: B.S. BD 2
United States: ASTM A681 , FED QQ-T-570 , SAE J437 , SAE J438 , UNS T30402

Composition
ElementWeight %
C  1.40-1.60 
Mn  0.60 
Si  0.60 
Cr  11.00-13.00 
Ni  0.30 
Mo  0.70-1.20 
V  1.10 
Co  1.00 
Cu  0.25 
P  0.03 
S  0.03 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.7 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) 10.4  20-100 more  
Glossary