AWS A5.1 E6013
Description: J421 is a carbon steel electrode with high titanium and potassium coating. It can be used for all-position welding with AC and DC. It has high welding performance and is easy to restart the arc. Application: Suitable for welding low carbon steel structures, especially suitable for intermittent welding of small pieces of thin plates and short welds and cover welding requiring smooth surfaces. Chemical composition of weld metal(%):| C | Mn | Si | S | P |
| ≤0. 12 | 0.30~0.60 | ≤0.30 | ≤0.035 | ≤0.040 |
| Test item | Tensile strength Mpa | Yield strength Mpa | Elongation % | Impact value (J) | |
| Normal Temp. | 0℃ | ||||
| Guaranteed | ≥420 | ≥330 | ≥17 | — | — |
| Tested | 460 ~ 540 | ≥340 | 18 ~ 26 | 50 ~ 75 | ≥47 |
| Rod diameter （mm） | 2.0 | 2.5 | 3.2 | 4.0 | 5.0 | 5.8 |
| Welding current （A） | 40 ~ 70 | 50 ~ 80 | 80 ~ 120 | 150 ~ 190 | 180 ~ 240 | 220 ~ 280 |