45CrNiMoVA chemical composition and mechanical properties
    ● Chemical Composition:
Carbon C: 0.42 ~ 0.49
Silicon Si: 0.17 ~ 0.37
Manganese Mn: 0.50 ~ 0.80
Sulfur S: allow the residual content ≤ 0.025
Phosphorus P: allow the residual content ≤ 0.025
Chromium Cr: 0.80 ~ 1.10
Nickel Ni: 1.30 ~ 1.80
Cu: to allow the residual content of ≤ 0.25
Vanadium V: 0.10 ~ 0.20
Molybdenum Mo: 0.20 ~ 0.30
● mechanical properties:
Tensile strength σb (MPa): ≥ 1470 (150)
Yield strength σs (MPa): ≥ 1325 (135)
Elongation δ5 (%): ≥ 7
Reduction of area ψ (%): ≥ 35
Impact energy Akv (J): ≥ 31
Impact toughness value of alpha kv (J/cm2): ≥ 39 (4)
Hardness: ≤ 269HB
Sample size: Sample
● Heat treatment and microstructure specifications:
Heat treatment specifications: quenching 860 ℃, oil cooling; tempering 460 ° C, cold oil.
● Delivery status: to heat treatment (normalizing, annealing or high-temperature tempering) or without heat treatment delivery, the delivery status should be in aggregate

With indicated.