General description
Base electrode NiCu for welding alloys of similar composition with Ni below 30%, as well as for deposit of final layer CuNi70/30 on multi-layer steel. Weld metal shall be resistant to sea water. Electrode is suitable for all positions, except vertical down, easy slag release. Main application: in shipbuilding, oil refineries, press installations.
Current type
DC electr. +
Application advice
Annealing for 2h at 200-250оС. Joints before welding must be clean from oil and cracks.
Welding must be with a short arc and without high power.
Classification
|
AWS A5.13 |
:ECuNi |
|
DIN 1733 |
:E L-CuNi 30Mn |
Welding positions
Materials to be welded
|
UNS |
Alloy DIN |
Material |
W.Nr. |
|
C70600 |
CuNi90/10 |
CuNi10Fe1Mn |
2.0872 |
|
C71500 |
CuNi70/30 |
CuNi30Mn1Fe |
2.0882 |
Chemical composition (w%), typical, all weld metal
|
С |
Si |
Mn |
Ni |
Fe |
Cu |
|
0.05 |
0.05 |
1.5 |
30.0 |
0.6 |
rest |
Mechanical properties, all weld metal
|
|
Condition |
0.2% Yield Strength |
Tensile Strength (N/mm2) |
Elongation (%) |
Hardness |
|
НВ |
|||||
|
Typical values after welding |
AW |
240 |
380 |
30 |
not required |
| Elecu® BCuAl |
| Elecu® BCuSn |
| Elecu® BCuSi |
| Elecu® BCu |