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AISI T5
Category Steel
Class Tool steel
Type Tungsten high speed steel
Designations  Germany: DIN 1.3265
Italy: UNI KU
Japan: JIS SKH 4A
United Kingdom: B.S. BT 5
United States: ASTM A600 , FED QQ-T-590 , SAE J437 , SAE J438 , UNS T12005

Composition
ElementWeight %
C  0.75-0.85 
Mn  0.20-0.40 
Si  0.20-0.40 
Cr  3.75-5.00 
Ni  0.3 
Mo  0.50-1.25 
W  17.50-19.00 
V  1.80-2.40 
Co  7.00-9.50 
Cu  0.25 
P  0.03 
S  0.03 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 8.75 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) 11.2  20-100 more  
Glossary