MIG (GMAW) wires for creep resisting steels

Classification DIN EN ISO

21952-B G 2C1M

Material No.


Classification AWS

A5.28 ER90S-B3



Characteristics and application

MIG/GMAW wire for high temperature creep resistant 2.25%Cr-1%Mo ferritic steels, 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.

Base materials

For matching 2.5%Cr-1%Mo creep resisting ferritic steels.
10CrMo 9-10, G-17CrMo 9-10
ASTM: A182 grade F22, A199/A200 grades T21/T22, A213 grade T22, A217 grade WC9, A234 grade WP22, A335 grade P22, A387 grades 21/22

Typical analysis in %

C: 0,09
Si: 0,55
Mn: 0,55
Cr: 2,50
Mo: 1,05

Yield strength in Mpa

≥ 540

Tensile strength in Mpa

≥ 620

Elongation in %

4d/5d: ≥17

Charpy-V-Value (ISO-V) in J


Typical heat treatment

Preheat temperature: 200°C
Interpass temperature: max. 300°C
PWHT: 690°C

Other products

SAW: UP-99 CrMo2 (S1CrMo2)
Gas welding: U 50 CrMo  (G VI)