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AISI 4037
Category Steel
Class Alloy steel
Type Standard
Common Names Molybdenum steel
Designations  United States: AMS 6300 , ASTM A322 , ASTM A331 , ASTM A519 , ASTM A547 , SAE J404 , SAE J412 , SAE J770 , UNS G40370

Composition

ElementWeight %
C  0.35-0.40 
Mn  0.70-0.90 
P  0.035 (max) 
S  0.04 (max) 
Si  0.15-0.30 
Mo  0.20-0.30 

Mechanical Properties

Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.7-8.03 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 190-210 25  
Tensile Strength (Mpa) 1027  25  oil quenched, fine grained, tempered at 205°C  more
Yield Strength (Mpa) 758 
Elongation (%)
Reduction in Area (%) 38 
Hardness (HB) 310  25  oil quenched, fine grained, tempered at 205°C more

Thermal Properties

Properties Conditions 
T (°C)Treatment
Thermal Conductivity (W/m-K) 48.2  100 more  
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