12Cr1MoV 

 Standard: GB/T3077-1999 

 Chemical composition 

 C: 0.07 ~ 0.15 Si: 0.18 ~ 0.37 Mn: 0.41 ~ 0.70 Cr: 0.90 ~ 1.20 Mo: 0.25 ~ 0.35 V: 0.15 ~ 0.30 

 The main features 

 Main features: steel 12CrMoV steel has a higher oxidation resistance and heat resistance. The creep limit of this steel and rupture strength values ??very close to the high plasticity and lasting stretch; process of steel with good weldability, welding before preheating to 300 ° C after welding is required in addition to stress treatment. 

 The high-pressure, high pressure, sub-critical power plant boiler superheater header and main steam conduit is widely used steels. 580 ℃, still has high heat resistance and oxidation resistance, high durable plastic. The production process is relatively simple, good welding performance, but more sensitive to the normalized cooling rate. 580 ℃ long-term use will produce a pearl sphere of 

 Application examples 

 This steel after normalizing and high-temperature tempering, to work in the manufacturing of high voltage equipment temperature does not exceed 570 ~ 585 ° C of overheating and the forging.