AWS E8015-G
Description: This is a low hydrogen sodium covered special electrode for aluminized steel. Use DCEP (direct current electrode positive), and can be welded in all positions with short arc operation. J557SLA can be directly welded without removing the aluminized layer on the groove surface before welding. But the J557SLB should remove the aluminized layer on the groove surface before welding. Application: It is used for welding the aluminized steel structure under the corrosion medium of hydrogen sulfide, sulfur, ammonia, ammonium bicarbonate and hydrogen nitrogen with working temperature below 540°C. Such as boiler pipes, petroleum refining equipment, fertilizer equipment and steam pipes, etc. Chemical composition of weld metal(%):| C | Mn | Si | Cr | Mo | Al | S | P |
| ≤0.12 | 0.50 ~ 0.90 | ≤0.50 | ≈0.80 | ≥0.20 | ≤0.055 | ≤0.035 | ≤0.035 |
| Test item | Tensile strength Mpa | Yield strength Mpa | Elongation % | Impact value (J) Normal Temp. |
| Guaranteed | ≥540 | ≥440 | ≥17 | ≥49 |
| （mm） Rod diameter | 2.5 | 3.2 | 4.0 | 5.0 |
| （A） Welding Current | 50 ~ 80 | 80 ~ 110 | 130 ~ 170 | 160 ~ 200 |