Difference between 12Cr1MoVG and 15CrMo alloy steel pipe:
Both 12Cr1MoVG and 15CrMo alloy steel pipe belong to alloy structural steel. Due to different chemical composition and properties, their service environment is different. The following is a detailed analysis.

1. Chemical composition difference between 12Cr1MoVG and 15CrMo alloy steel pipe:
Chemical composition of 12Cr1MoVG alloy steel pipe: 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 alloy steel pipe 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 content of 12Cr1MoVG alloy steel pipe is lower than 15CrMo alloy steel pipe, and the molybdenum content of 12Cr1MoV alloy steel pipe is lower than 15CrMo alloy steel pipe. 15CrMo alloy steel pipe has no limitation on vanadium content, and vanadium is not added specifically.

2. Differences in mechanical properties between 12Cr1MoVG and 15CrMo alloy steel pipe:
12Cr1MoVG alloy steel pipe mechanical properties: tensile strength: ≥ 490MPa, yield strength: ≥ 245MPa, elongation after fracture: ≥ 22%, reduction of area: ≥ 50%, impact energy: ≥ 71J.

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