CrMoV

CrMoV base materials exhibit noteworthy creep rupture properties up to approximately 580°C, coupled with a reasonable level of corrosion resistance in superheated steam environments. These materials find common applications in various sectors, including valve casings and steam turbines, as well as general use in boilers and pressure vessels within the power generation and petrochemical industries. The presence of vanadium in these materials enhances the tempering stability of quenched steel, introducing a secondary hardening effect. Additionally, vanadium contributes to grain refinement, increases strength, improves the yield ratio, enhances low-temperature toughness after normalizing, and betters the welding performance of standard low-alloy steel. Adherence to specifications for preheating and post-weld heat treatment is crucial, aligning with the requirements of the base materials.

1¼%Cr-½%Mo alloyed steel consumables for elevated temperature service with addition of vanadium.

After PWHT, the microstructure consists of tempered bainite.

EN W.Nr.: G17CrMoV5-10 (1.7706), 21 CrMoV 5 11 (1.8070), 15 CrMoV 5 10 (1.7745), GS-17CrMo 5 11 (1.7706) (cast).
ASTM: A389 gr. C24 (cast), A356 gr. 9 (cast).