eFunda: Properties of Tool Steel AISI A2
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AISI A2
Category Steel
Class Tool steel
Type Air-hardening medium-alloy cold work steel
Designations  France: AFNOR Z 100 CDV 5
Germany: DIN 1.2363
Japan: JIS SKD 12
Sweden: SS 2260
United Kingdom: B.S. BA 2
United States: ASTM A681 , FED QQ-T-570 , SAE J437 , SAE J438 , UNS T30102

Composition

ElementWeight %
C  0.95-1.05 
Mn  1.00 
Si  0.50 
Cr  4.75-5.50 
Ni  0.30 
Mo  0.90-1.40 
V  0.15-0.50 
Cu  0.25 
P  0.03 
S  0.03 

Mechanical Properties

Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.86 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) 10.7  20-100 more  
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