AWS A5.1: E7018-1 H4R | DIN EN ISO 2560-A: E 42 5 B 42 H5
-50 °C Impact Rated | H4R Moisture Resistance | Tough Beads for Structural Security
A premium basic-coated, iron powder electrode with extremely low moisture pickup (H4R certified), designed for crack-free welding of C-Mn microlow and low-alloy steels. Delivers superior impact toughness down to –50 °C with excellent arc stability and bead appearance in positional welding. Ideal for high-restraint joints, marine environments, and security-critical structural fabrication.
Available Packs
Typical Weld Metal Chemical Composition (%)
| C | Si | Mn | P | S |
| 0.07 | 0.35 | 1.50 | 0.020 | 0.020 |
Typical Mechanical Properties (All Weld Metal)
| Heat Treatment | Tensile Strength
Rm (N/mm2) |
Yield Strength
Rp (N/mm2) |
Elongation A5 (%) | Charpy Impact Value
(ISO-V J -45°C) |
Charpy Impact Value
(ISO-V J -50°C) |
| As Welded | 550-640 | > 450 | 28 | 85 | 80 |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.40/2.50 | 60-90 |
| 3.15/3.20 | 110-140 |
| 4.00 | 140-190 |
| 4.80 | 180-230 |
| 5.00 | 180-230 |
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