C | Mn | Si | Ni | S | P |
≤0.05 | ≤1.25 | ≤0.60 | 3.00 ~ 3.75 | ≤0.020 | ≤0.025 |
Test item |
Tensile strength Mpa |
Yield strength Mpa | Elongation% | Impact value (J)-100℃ |
Guaranteed | ≥490 | ≥390 | ≥22 | ≥27 |
(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 |
- 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.