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Difference between 12Cr1MoV and 15CrMo steel plate

1. Difference of chemical composition between 12Cr1MoV and 15CrMo steel plate:
Chemical composition of 12Cr1MoV steel plate: C: 0.08-0.15, Si: 0.17-0.37, Mn: 0.40-0.70, Cr: 0.90-1.2, Mo: 0.25-0.35, V: 0.15-0.30.

15CrMo steel plate 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%.

2. Differences in mechanical properties between 12Cr1MoV and 15CrMo steel plate:
Mechanical properties of 12Cr1MoV steel plate: tensile strength (σb/MPa): ≥ 490, yield point (σs/MPa): ≥ 245, elongation after fracture (δ5/%): ≥ 22, reduction of area (ψ/%): ≥ 50, impact absorption work (Aku2/J): ≥ 71, brinell hardness (HBS100/3000) (annealed or tempered at high temperature): ≤ 179.

The mechanical properties of 15CrMo steel plate are as follows:
Tensile strength: 440 MPa; yield strength: 295 MPa; elongation after fracture: 22%; shrinkage after fracture: 60%; impact absorption energy: 94 J.