Nickel and Nickel Alloy Welding Electrode
Ni327-6
GB/T ENi6620
AWS A5.11 ENiCrMo-6
Description: Ni327 -6 is a nickel-based electrode with low-hydrogen sodium coating. Use DCEP (direct current electrode positive). The deposited metal has excellent plasticity, toughness and crack resistance. Deposited metal has a linear expansion coefficient similar to that of steel, and has high strength and strong corrosion resistance at room temperature and high temperature.
Application: It is used for the welding of Ni9% steel, and can also be used for welding of dissimilar steels and difficult-to-weld alloys.
Chemical composition of weld metal(%):
|
C |
Mn |
Si |
Ni |
Mo |
Fe |
Cu |
|
≤0.10 |
2.0 ~ 4.0 |
≤1.0 |
≥55.0 |
5.0 ~ 9.0 |
≤10.0 |
≤0.5 |
|
Nb + Ta |
W |
Cr |
S |
P |
Other |
|
|
0.5 ~ 2.0 |
1.0 ~ 2.0 |
12.0 ~ 17.0 |
≤0.015 |
≤0.020 |
≤0.5 |
|
Mechanical properties of weld metal:
|
Test item |
Tensile strength Mpa |
Yield strength Mpa |
Elongation % |
|
Guaranteed |
≥620 |
≥350 |
≥32 |
Recommended current:
|
Rod diameter （mm） |
2.5 |
3.2 |
4.0 |
|
Welding current （A） |
50 ~ 70 |
80 ~ 100 |
110 ~ 150 |
Notice:
1. The electrode must be baked for1 hour at around 300℃ before welding operation. Try to use a short arc to weld；
2. It is essential to clean up rusty, oil, water, and impurities on welding parts before welding.
3. Try to use small line energy when welding, multi-layer and multi-pass welding.
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