Nickel and Nickel Alloy Welding Electrode
Ni307-3
GB/T ENi6182
AWS A5.11 ENiCrFe-3
Description: Ni307-3 is a nickel-based electrode with low-hydrogen sodium coating. Use DCEP (direct current electrode positive). It has good crack resistance because the weld contains a certain amount of manganese, niobium, and other alloying elements.
Application: It is used for the welding of nickel-chromium-iron alloys (such as UNS N06600) and the surfacing of steel. The working temperature is generally not higher than 480 ° C, and the crack resistance is good. Suitable for atomic furnace pressure vessel and chemical tank welding.
Chemical composition of weld metal(%):
|
C |
Mn |
Fe |
P |
S |
Si |
Cu |
|
≤0.10 |
5.0 ~ 10.0 |
≤10.0 |
≤0.020 |
≤0.015 |
≤1.0 |
≤0.5 |
|
Ni |
Ti |
Mo |
Nb |
Ta |
Other |
|
|
≥60.0 |
≤1.0 |
13.0 ~ 17.0 |
1.0 ~ 3.5 |
≤0.30 |
≤0.50 |
|
Mechanical properties of weld metal:
|
Test item |
Tensile strength Mpa |
Yield strength Mpa |
Elongation % |
|
Guaranteed |
≥550 |
≥360 |
≥27 |
Recommended current:
|
Rod diameter （mm） |
2.5 |
3.2 |
4.0 |
5.0 |
|
Welding current （A） |
60 ~ 90 |
80 ~ 100 |
110 ~ 150 |
130 ~ 180 |
Notice:
1. The electrode must be baked for1 hour at around 300℃ before welding operation;
2. It is essential to clean up rusty, oil, water, and impurities on welding parts before welding. Try to use a short arc to weld.
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