A 193。 B7 is equivalent to the domestic 42CrMoA material, and B7 is the material grade.
Basic information
42CrMoA
The abbreviation of alloy structural steel, 42CrMoA, is a kind of composite steel.
Implement the standard GB/T 3077-1999.
Uniform digital code A30422；; 42CrMoA level; ;
Extended data:
mechanical character
Tensile strength? σb(MPa):≥ 1080( 1 10)
Yield strength σ s (MPa): ≥ 930 (95)
Elongation δ 5 (%): ≥ 12
Area shrinkage? ψ (%):≥45
Impact work akv (j): ≥ 63
Impact toughness value α kV (j/cm2): ≥ 78 (8)
Hardness: ≤2 17HB
Sample size: the blank size of the sample is 25mm.
Baidu encyclopedia -42CrMoA