E 7018–G–H4
AWS/ASME SFA-5.5:E 38 5 Z B 42 H5
EN 2560-AApplication/properties:
Basic electrode used for welding fine-grained steels used in pressure vessels, boilers, pipes, steel structures, dam construction and shipbuilding. Its weld is tough and crack-resistant and has low hydrogen content. The electrode has a stable and concentrated arc, thus being well-suited or positional welding. Welds are of X-ray quality.
| C | Mn | Si | Ni | S | P |
|---|---|---|---|---|---|
| 0.06 | 1.3 | 0.5 | 0.45 | <0.02 | <0.02 |
(single values are typical values)
| Tensile Strength ( N/mm 2 ) | Yield Strength ( N/mm 2 ) | Elongation A4,(%) | Impact energy (J) ISO - V -50°C | Heat treatment |
|---|---|---|---|---|
| 490-560 | >400 | >23 | >130 | T |
T: Tempered 1 hour at 620°C, air cooling
| Welding Parameters | ||
|---|---|---|
| Diameter (mm) | Length (mm) | Amperage (A) |
| 2.5 | 250 | 65– 95 |
| 3.25 | 350 | 90– 135 |
| 4.0 | 350 | 140– 180 |
| 5.0 | 450 | 190– 240 |
