55CrMnA chemical composition and mechanical properties

● Chemical Composition:
Carbon C: 0.52 ~ 0.60
Silicon Si: 0.17 ~ 0.37
Manganese Mn: 0.65 ~ 0.95
Sulfur S: ≤ 0.030
Phosphorus P: ≤ 0.030
Chromium Cr: 0.65 ~ 0.95
Nickel Ni: ≤ 0.35
Copper Cu: ≤ 0.25
Vanadium V: 0.10 ~ 0.20

● mechanical properties:
Tensile strength σb (MPa): ≥ 1225 (125)
Conditions yield strength σ0.2 (MPa): ≥ 1080 (110)
Elongation δ5 (%): ≥ 9 (for reference)
Reduction of area ψ (%): ≥ 20
Hardness: hot, ≤ 321HB;
Cold Drawn + heat treatment, ≤ 321HB