Gabriel billion Metal Materials Co., Ltd. Suzhou professional sales 25Cr2MoV round, 25Cr2MoV chemical composition, steel 25Cr2MoV properties 25Cr2MoV GB standard alloy structural steel and chemical properties of steel Group: CrMoV Number: 44 Grade: 25Cr2MoV unified digital code: A31253 C (% ): 0.22 ~ 0.29 Si (%): 0.17 ~ 0.37 Mn (%): 0.40 ~ 0.70 Cr (%): 1.50 ~ 1.80 Mo (%): 0.25 ~ 0.35 Ni (%): - V (%): 0.15 ~ 0.30 Other (%): - heat | quench | heating temperature / ℃ | First hardening: 900 heat | quench | heating temperature / ℃ | Second quenching: - Heat Treatment | quench | Coolant: Oil heat treatment | tempering | Heating temperature / ℃: 640 heat treatment | tempering | Coolant: Air Mechanical Properties | Tensile strength σb / MPa | ≥: 930 Mechanical Properties | yield point σs / MPa | ≥: 785 Mechanical Properties | elongation δ5 (%) | ≥: 14 Mechanical Properties | surface shrinkage ψ (%) | ≥: 55 Mechanical Properties | impact energy AKV / J | ≥: 63 Delivery Status hardness HBS | ≥: 241 25Cr2MoV Features: heat-resistant carbon steel, At room temperature strength and toughness are high, with good performance and high temperature stability of relaxation, no heat brittle tendency hardenability better moderate cold plastic deformation, workability can still poor welding. Usually in the quenched state, can also be used after normalizing and tempering. 25Cr2MoV Applications: for the manufacture of turbine rotor as a whole, the sleeve, the main steam valve, control valve, steam parameters up to 535 ℃ and 550 ℃ following a long period of nuts, bolts, and a long period of below 530 ℃, 510 ℃ or below the long-term Other connections work, but also as nitriding steel production stem, and other gear.