2Cr1Mo

Engineered for extended high-temperature use, reaching up to 600°C, these consumables find primary applications in steam-generating power plants. They excel in various components, such as piping, turbine castings, steam chests, valve bodies, and boiler superheaters. Some also serve in refineries, ensuring corrosion resistance to sulfur-bearing crude oil within the range of 250-450°C. In the chemical and petrochemical industries, they resist hydrogen attack during the fabrication of hydrocrackers, coal liquefaction plants, and NH3 pressure vessels (up to 450°C). In their as-welded state, these consumables yield a valuable 300HV hardness weld deposit suitable for build-up or hard surfacing, effectively countering metal-to-metal wear, heavy impact, and aiding in the repair of P20 mold steel. Maintaining a minimum preheat and interpass temperature of 250°C, rising to 300°C for thick sections, is crucial throughout the welding cycle and post-welding. Unless specified for unique applications, post-weld heat treatment (PWHT) is always necessary, typically at 690°C, with the duration contingent on section thickness.

2¼Cr-1Mo alloyed steel consumables for elevated temperature service.

After PWHT, the microstructure consists of tempered bainite.

EN W.Nr.: 11 CrMo 9-10 (1.7383), 10 CrMo 9-10 (1.7380), GS-18CrMo 9 10 (1.7379), GS-12CrMo 9 10 (1.7380), 6CrMo 9 10 (1.7385), 12CrMo 9 10 (1.7375).
ASTM: A387 Gr 21&22, A182 F22, A217 WC9, A234 WP22, A199 T21,T22, A200 T21,T22, A335 P22, A234 WP22.