12Cr1MoV alloy structural steel, unified digital code: A31132, is a high-performance alloy steel material.
The chemical composition of 12Cr1MoV steel:
C: 0.08-0.15, Si: 0.17-0.37, Mn: 0.40-0.70, Cr: 0.90-1.20, Mo: 0.25-0.35, V: 0.15-0.30, P≤0.35, S≤0.35, Cu≤0.25
Main features: Compared with 12CrMoV steel, 12Cr1MoV steel has higher oxidation resistance and thermal strength.
The creep limit of 12Cr1MoV alloy structural steel is very close to the endurance strength value, and it has high plasticity in the case of permanent tension; 12Cr1MoV steel has good manufacturability and weldability, but it needs to be preheated to 300℃ before welding, and it needs to be removed after welding. 12Cr1MoV is a steel grade widely used in high-pressure, ultra-high pressure, and subcritical power station boiler superheaters, headers and main steam ducts.
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