21952-B W 2C1ML
TIG/GTAW rod for high temperature creep resistant 2.25%Cr-1%Mo ferritic steel, i.e. P21/P22. These steels are used for creep resisting applications up to ~600°C. Typical applications in power generation plant include steam piping, turbines and boilers; the alloy also finds applications in the chemical and petro-chemical industries. The wire has low levels of tramp elements (eg. Sn, As, Sb and P) providing a low Bruscato Factor (X< 10 ppm) for temper embrittlement resistant applications.
This type is identical to WSG ER 90S-B3 except the lower Carbon content. Strength and Hardness of the weld metal may be lowerd leading to a higher resistance to cracking which is beneficial when the weldments are left in the as welded condition.
For matching 2.5%Cr-1%Mo creep resisting ferritic steels.
10CrMo 9-10, G-17CrMo 9-10
ASTM: A182 F22, A199/A200 grades T21/T22, A213 T22, A217 WC9, A234 WP22, A335 P22, A387 grades 21/22
Preheat temperature: approx. 200°C
Interpass temperature: max. 300°C
PWHT: approx. 690°C
SAW: UP-99 CrMo 2 or UP-100 CrMo 2
MIG/GMAW: ED-SG CrMo 2 or ED-ER90S-B3
TIG/GTAW: WSG CrMo 2 / WSG ER90S-B3
Gas welding: U 50 CrMo