Low-alloyed Electrodes
ES 7018-A1 A5.5: E 7018-A1H4R / EN 1599: E Mo B 4 2 H5
Description
ES 7018 A1 Basic low-hydrogen electrode for 0.5 % Mo-alloyed boiler, plates, and tube steels. Approved in long term condition up to +550 °C service temperature. For high quality welds of long term stressed components with reliable mechanical properties under high and low temperature conditions. Crack resistant, tough and ageing resistant. Very low hydrogen content (acc. AWS condition HD < 4 ml/100 g). Metal recovery approx. 115
Typical Chemical Composition (%)
| Si | Mn | Mo | C |
|---|---|---|---|
| 0.35 | 0.8 | 0.45 | 0.08 |
Typical Mechanical Properties
| Yeild Strength | Tensile Strength | Elongation 5x D | Impact (ISO-V) |
|---|---|---|---|
| 510 N / mm² | 590 N / mm² | % 25 | + 20 °C – 170 j - 50 °C – 60 j |
Applications
Sizes Available & Recomennded Currents
| Diam. (mm) | Length (mm) | Current (Amperes) | Arc Voltage | Wire Feed |
|---|---|---|---|---|
| 2.50 | 350 | 80 - 110 | ||
| 3.25 | 350 | 100 - 140 | ||
| 4.00 | 450 | 130 - 180 | ||
| 5.00 | 450 | 190 - 230 |
Welding Current
DC { + }
Welding Positions
 Flat |
 Horizontal |
 Vertical Up |
 Overhead |
 Fillet |