Low Temperature Steel Welding Electrode
W107
GB/T E5015-C2L
AWS A5.5 E7015-C2L
Description: W107 is a low-temperature steel electrode with low-hydrogen sodium coating. Use DCEP (direct current electrode positive) and can welded in all positions. The deposited metal still has good impact toughness at -100°C.
Application: Used for welding low temperature steel such as 3.5Ni.
Chemical composition of weld metal(%):
|
C |
Mn |
Si |
Ni |
S |
P |
|
≤0.05 |
≤1.25 |
≤0.60 |
3.00 ~ 3.75 |
≤0.020 |
≤0.025 |
Mechanical properties of weld metal:
|
Test item |
Tensile strength Mpa |
Yield strength Mpa |
Elongation% |
Impact value (J)-100℃ |
|
Guaranteed |
≥490 |
≥390 |
≥22 |
≥27 |
Diffusion hydrogen content of deposited metal: ≤4.0mL/100g (glycerin method) or ≤7.0mL/100g (mercury or gas chromatography method)
X-ray inspection: I grade
Recommended current:
|
（mm） Rod diameter |
2.0 |
2.5 |
3.2 |
4.0 |
5.0 |
|
（A） Welding Current |
40 ~ 70 |
70 ~ 90 |
90 ~ 130 |
140 ~ 180 |
180 ~ 240 |
Notice:
- The electrode must be baked for 1 hour at 350℃ before welding operation;
- It is essential to clean up rusty, oil scale, water, and impurities on welding parts before welding;
- Try to use small line energy when welding, multi-layer and multi-pass welding.
