Application/properties: Basic electrode for welding of Ni-base alloys. This electrode is specially used for welding of 5% Ni and 9% Ni steels for low temperature operation. The electrode can be welded with AC current to avoid the arc below. It is recommended to use arc length as short as possible.
Weld metal analysis in % (typical values):
C
Si
Mn
Cr
Ni
Mo
W
Nb
Fe
0.08
0.3
3.7
13
rest
5.5
1.3
1.5
8.5
Mechanical Properties of all-weld metal:
(single values are typical values)
Tensile Strength ( N/mm 2 )
Yield Strength ( N/mm 2 )
Elongation A5 (%)
Impact energy(j) ISO - V 20°C -196°C+
Heat treatment
700
> 420
40
90 70
AW
AW: As welded
OCV>70V
Welding Parameters
Diameter (mm)
Length (mm)
Amperage (A)
2.5
250
70 – 95
3.25
300 - 350
100 – 150
4.0
350
140 – 180
5.0
350
180 – 230
Materials:
DIN Standard
X 8 Ni 9
other Standard
ASTM A353 Gr. K81340; A522 Gr. I, II; A553 Gr.K81340
