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AISI T15
Category Steel
Class Tool steel
Type Tungsten high speed steel
Designations  Germany: DIN 1.3202
Italy: UNI 130505 KU
United Kingdom: B.S. BT 15
United States: ASTM A600 , FED QQ-T-590 , UNS T12001 , UNS T12015

Composition
ElementWeight %
C  1.50-1.60 
Mn  0.15-0.40 
Si  0.15-0.40 
Cr  3.75-5.00 
Ni  0.3 
Mo  1.00 (max) 
W  11.75-13.00 
V  4.50-5.25 
Co  4.75-5.25 
Cu  0.25 
P  0.03 
S  0.03 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 8.19 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) 9.9  20-200 more  
Thermal Conductivity (W/m-K) 20.9  100 more  
Glossary