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U 50 CrMo (G VI)

Gas welding rods for mild and low alloyed steel

Quality U 50 CrMo (G VI)
Classification DIN EN 20378 - VI
Material No. 1.7305
Classification AWS A5.2 ~R65
Approvals -
Characteristics and application Rod for gas welding of 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.
Base materials For matching 2.5%Cr-1%Mo creep resisting ferritic steels.
10CrMo 9-10, 12CrMo 9-10, G-17CrMo 9 10
ASTM: A182 grade F22, A199/A200 grades T21/T22, A213 grade grade T22, A217 grade WC9, A234 grade WP22, A335 grade P22, A387 grades 21/22
Typical analysis in %
C: 0,08
Si: 0,15
Mn: 0,55
Cr: 2,10
Mo: 1,00
Yield strength in Mpa ≥ 340
Tensile strength in Mpa ≥ 520
Elongation in % 4d/5d: ≥18
Charpy-V-Value (ISO-V) in J RT ≥ 60
Typical heat treatment Preheat temperature: 200°C
Interpass temperature: max. 300°C
PWHT: 690°C
Other products 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 or WSG ER90S-B3