AWS A5.5 E7015-A1
Description: R107 is a pearlitic heat-resistant steel electrode with a low-hydrogen sodium coating containing 0.5% Mo. Use DCEP (direct current electrode positive) and can welded in all positions.The weldment must be preheated to 90 ~ 110 ℃ before welding. Application: It is used for welding boiler pipes with working temperature below 510°C (such as 15Mo, etc.), and can also be used for welding general low-alloy high-strength steel. Chemical composition of weld metal(%):| C | Mn | Si | Mo | S | P |
| ≤0. 12 | 0.50~ 0.90 | ≤0.50 | 0.40 ~ 0.65 | ≤0.030 | ≤0.030 |
| Test item | Tensile strength Mpa | Yield strength Mpa | Elongation % | Impact value (J) Normal Temp. |
| Guaranteed | ≥490 | ≥390 | ≥22 | ≥47 |
| Rod diameter （mm） | 2.0 | 2.5 | 3.2 | 4.0 | 5.0 |
| Welding Current （A） | 40 ~ 70 | 60 ~ 90 | 90 ~ 120 | 140 ~ 180 | 170 ~ 210 |