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High Speed Steel
Hot Work Tool Steel
 
 
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
 
Element  Weight % 
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


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