20MnV alloy structural steel

The strength, plasticity, toughness, and hardenability of 20MnV alloy structural steel are better than those of 20Mn2. 20MnV steel is equivalent to 20CrNi steel and can be used for manufacturing boilers, high-pressure vessels, and pipelines.

Chemical composition of 20MnV alloy structural steel: (mass fraction) (%)
Carbon C: 0.17-0.24
Silicon Si: 0.17-0.37
Manganese Mn: 1.30-1.60
Sulfur S: allowable residual content ≤ 0.035
Phosphorus P: allowable residual content ≤ 0.035
Chromium Cr: allowable residual content ≤ 0.30
Nickel Ni: allowable residual content ≤ 0.30
Copper Cu: allowable residual content ≤ 0.30
Molybdenum Mo: ≤ 0.15
Vanadium V: 0.07-0.12

Mechanical properties of 20MnV alloy steel:
Tensile strength σb (MPa): ≥785(80)
Yield strength σs (MPa): ≥590(60)
Elongation δ5 (%): ≥10
Reduction of area ψ(%): ≥40
Impact energy Akv (J): ≥ 55
Impact toughness value αkv (J/cm ²): ≥ 69(7)
Brinell hardness (HBS100/3000) (annealed or high-temperature tempered): ≤ 187

20MnV steel heat treatment:
Heating temperature for the first quenching (℃): 880;
Coolants: water, oil

Second quenching heating temperature (℃):-
Tempering heating temperature (℃): 200;
Coolants: water, air

20MnV alloy structural steel delivery status: delivered in heat treated (normalized, annealed, or high-temperature tempered) or non heat treated state, and the delivery status should be specified in the contract.