U 47 Mo (G IV)
Gas welding rods for mild and low alloyed steel

Classification DIN EN

20378 - IV

Material No.


Classification AWS

A5.2 ~R60


TÜV 02412.05, CE, DB 70.045.05

Characteristics and application

Rod for gas welding of 0.5%Mo steels, i.e. P1. These steels are commonly used at service temperatures up to 500°C and for some sub-zero structural applications. The 0.5% alloying improves creep performance compared to CMn steels and sees the alloy being used for boiler, pressure vessel and piping construction. The good general mechanical properties also ensures use in general structural engineering applications. Viscous melting bath. Extremly useful when the exact analysis of the boiler plate is unknown.

Base materials

S550GD, S355J0, E335, P285NH, P310GH, S355J0Cu, P355N-P460N, P355NH-P460NH, 16Mo3
ASTM: A182/A336 grade F1, A204 grades A/B/C, A209/A250 grade T1, A217 grade WC1, A335 grade P1, A352 grade LC1

Typical analysis in %

C: 0,10
Si: 0,15
Mn: 1,05
Mo: 0,50

Yield strength in Mpa

≥ 260

Tensile strength in Mpa

≥ 440

Elongation in %

4d/5d: ≥22

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

RT ≥ 60

Typical heat treatment

Preheat temperature: Dependent on material thickness
Interpass temperature: max. 250°C
PWHT: AW or 650°C

Other products

SAW: UP-100 Mo/UP-101 Mo