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AISI 6150
Category Steel
Class Alloy steel
Type Standard
Common Names Chromium-vanadium steel
Designations  France: AFNOR 50 CV 4
Germany: DIN 1.8159
Italy: UNI  5OCrV 4
Japan: JIS SUP 10
Sweden: SS 2230
United Kingdom: B.S. 735 A 50 , B.S. En. 47
United States: AMS 6448 , AMS 6448C , AMS 6450 , AMS 6450C , AMS 6455 , AMS 6455C , AMS 7301 , ASTM A231 , ASTM A322 , ASTM A331 , ASTM A505 , MIL SPEC MIL-S-8503 , SAE J404 , SAE J412 , SAE J770 , UNS G61500


ElementWeight %
C  0.48-0.53 
Mn  0.70-0.90 
P  0.035 (max) 
S  0.04 (max) 
Si  0.15-0.30 
Cr  0.80-1.10 
V  0.15min 

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) 667.4  25  annealed at 815°C  more
Yield Strength (Mpa) 412.3 
Elongation (%) 23.0 
Reduction in Area (%) 48.4 
Hardness (HB) 197  25  annealed at 815°C more
Impact Strength (J)
27.4  25  annealed at 815°C  more

Thermal Properties

Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 14.4  20-600 more annealed more