What are the differences between 12Cr1MoV and 15CrMo steel

Both 12Cr1MoV and 15CrMo steel belong to alloy structural steels. But they have different chemical composition and properties. The following is a detailed analysis.

1. Chemical composition difference between 12Cr1MoV and 15CrMo steel:
The chemical composition of 12Cr1MoV steel is C: 0.08-0.15, Si: 0.17-0.37, Mn: 0.40-0.70, Cr: 0.90-1.20, V: 0.15-0.30, Mo: 0.25-0.35.

15CrMo steel chemical composition: C: 0.12-0.18, Si: 0.17-0.37, Mn: 0.40-0.70, Cr: 0.80-1.10, Mo: 0.40-0.55.

The carbon and molybdenum content of 12Cr1MoV steel is lower than 15CrMo steel. 15CrMo steel has no limitation on vanadium content, and no vanadium element is specially added.

2. Differences in mechanical properties between 12Cr1MoV and 15CrMo steel:
12Cr1MoV steel mechanical properties: tensile strength: ≥ 490 MPa, yield strength: ≥ 245 MPa, elongation after fracture: ≥ 22%, reduction of area: ≥ 50%, impact energy: ≥ 71J.

15CrMo steel mechanical properties: tensile strength: ≥ 440 MPa, yield strength: ≥ 295 MPa, elongation after fracture: ≥ 22%, reduction of area: ≥ 60%, impact energy: ≥ 94J.