Electrode for welding of creep resistant and high-pressure hydrogen resistant steels used in the construction of pressure vessels, boilers and piping subjected to operating temperatures up to +570°C. Welds are of X-ray quality. Preheating, interpass temperature and post-weld heat treatment in accordance with base metal to be welded.
Weld metal analysis in % (typical values):
C
Mn
Si
Cr
Mo
0.06
0.80
0.40
1.00
0.50
Mechanical Properties of all-weld metal:
(single values are typical values)
Tensile Strength ( N/mm 2 )
Yield Strength ( N/mm 2 )(%)
Elongation (5*d)%
Impact energy (J) ISO - V 20°C+
Heat treatment
560 - 660
> 490
>22
120
T
450 - 550
> 300
>26
150
N+T
T: Tempered 0.5 hour at 700°C, air cooling N+T: Normalized + tempered 0.5 hour at 920°C, air cooling + 0.5 hour at 700°C
