35CrMoV, alloy structural steel. Unified digital code: A31352

Standard: GB / T 3077-1988

Chemical composition
[] Chemical composition (mass fraction) (%)

Carbon C: 0.30 ~ 0.38

Si Si: 0.17 ~ 0.37

Manganese Mn: 0.40 ~ 0.70

Sulfur S: to allow the residual content of ≤ 0.035

Phosphorus P: allow the residual content ≤ 0.035

Chromium Cr: 1.00 ~ 1.30

Ni: to allow the residual content of ≤ 0.030

Copper Cu: to allow the residual content ≤ 0.030

Vanadium V: 0.10 ~ 0.20

Mo Mo: 0.20 ~ 0.30 [1]

Mechanical properties
[Mechanical properties]

Blank sample size (mm): 25

Heat treatment:

The first quenching temperature (℃): 900; Coolant: Oil

Second quenching temperature (℃):

Tempering heating temperature (℃): 630; coolant: water, oil

Tensile strength σb (MPa): ≥ 1080 (110)

Yield strength σs (MPa): ≥ 930 (95)

Elongation δ5 (%): ≥ 10

Reduction of area ψ (%): ≥ 50

Impact energy Akv (J): ≥ 71

Impact toughness αkv (J/cm2): ≥ 88 (9)

Brinell hardness (HBS100/3000) (annealing or tempering condition): ≦ 241 [2]

Delivery status
Delivery status: to heat treatment