CrMoV
Application
The CrMoV base materials offer excellent creep rupture properties up to about 580°C, also ensuring a good level of corrosion resistance in environments with superheated steam. These materials find ideal application in cast components such as
valve and steam turbine casings, boilers, pressure vessels, as well as in the power generation and petrochemical industries. The addition of vanadium improves the tempering stability of the hardened steels, producing a secondary hardening effect. Additionally, it refines the grain, thus increasing strength, yield strength, and toughness at low temperatures after normalizing, and improves performance in welding conventional low-alloy steels. It is crucial to adhere to the specifications regarding the preheating and post-weld heat treatment of the base materials.
valve and steam turbine casings, boilers, pressure vessels, as well as in the power generation and petrochemical industries. The addition of vanadium improves the tempering stability of the hardened steels, producing a secondary hardening effect. Additionally, it refines the grain, thus increasing strength, yield strength, and toughness at low temperatures after normalizing, and improves performance in welding conventional low-alloy steels. It is crucial to adhere to the specifications regarding the preheating and post-weld heat treatment of the base materials.
Alloy Type
1¼%Cr-½%Mo alloyed steel consumables for
elevated temperature service with addition of vanadium.
Microstructure
After PWHT, the microstructure consists of
tempered bainite.
Materials
- 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)
Products of the line CrMoV
| Product name | Process | AWS specifications | EN ISO specifications | |
| DAIKOFCW 1CrMoV | FCAW |
AWS A5.36
E91T1-C1(M21)PZ-G |
- | |
| G-TECH 1CrMoV | SMAW |
AWS A5.5
E9018-G |
EN ISO 3580-A
E CrMoV1 B 32 |
