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AISI M46
Category Steel
Class Tool steel
Type Molybdenum high speed steel
Designations  United States: ASTM A600 , FED QQ-T-590 , UNS T11346

Composition
ElementWeight %
C  1.22-1.30 
Mn  0.20-0.40 
Si  0.40-0.65 
Cr  3.70-4.20 
Ni  0.3 
Mo  8.00-8.50 
W  1.90-2.20 
V  3.00-3.30 
Co  7.80-8.80 
Cu  0.25 
P  0.03 
S  0.03 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.83 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 190-210 25  
Glossary