U 49 CrMo (G V)
Gas welding rods for mild and low alloyed steel

Classification DIN EN

20378 - V

Material No.

1.7346

Classification AWS

A5.2 ~R65

Approvals

-

Characteristics and application

Rod for gas welding of high temperature creep resistant 1.25%Cr-0.5%Mo ferritic steel, i.e. P11/P12. These steels are used for creep resisting applications up to ~550°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.

Base materials

For matching 1.25%Cr-0.5%Mo creep resisting ferritic steels.
13CrMo 4-5, 16CrMo 4-4, G-17CrMo 5-5, 24CrMo5, 25CrMo4
ASTM: A182 grades F11/F12, A199/A200 grade T11, A217 grades WC6/WC11, A234 grades WP11/WP12, A335 grades P11/P12, A387 grades 11/12

Typical analysis in %

C: 0,12
Si: 0,15
Mn: 0,95
Cr: 1,15
Mo: 0,50

Yield strength in Mpa

≥ 320

Tensile strength in Mpa

≥ 510

Elongation in %

4d/5d: ≥20

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

RT ≥ 70

Typical heat treatment

Preheat temperature: 200°C
Interpass temperature: max. 300°C
PWHT: 620-690°C

Other products

SAW: UP-100 CrMo 1
MIG/GMAW: ED-SG CrMo 1 or ED-ER80S-B2
TIG/GTAW: WSG CrMo 1 or WSG ER80S-B2