Commercial Grade
Corresponding Standard SAE J467b-1956(R1968)
Special Purpose Alloys (Superalloys)
Classification Special Alloy Steel
Chemical Element Composition Content (%)
Component C Si Mn Cr Mo V More
Nominal Value 0.2 0.75 0.5 1 1 0.1 Fe余量
Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Reduction of Area
ψ
%
Hardness
HBW
Air cooling (1200°F) ≥138 ≥117 ≥7 ≥45 HRC
≥30

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