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Classification
AWS A5.1 : E 7018-1
ISO 2560-A : E 42 4B 32 H5
EN 499 : E 42 4B 32 H5
Properties and application
Basic coated electrode with high resistance to cracking at low temperatures (down to -50°C). Designed for welding heavily loaded structures. High efficiency (115%), low spatter and easy slag removal.
Application: load-bearing structures, frames and supports, pressure vessels, shipbuilding.
Base materials
General structural steels, pipe steels, shipbuilding steels, boiler and pressure vessel steels, high-strength, heat-resistant and cold-rolled steels
EN standards
Shipbuilding steels
ASTM
S 185 – S 355
GP 240 R
L 210 – L 360
Quality A, B, C and D
A 285 grade C
A 442 class 55, 60
A 516 class 55, 60, 65, 70
P 235 – P 355
P 235GH – P 265GH
A414 class C, D, E, F
A515 class 55, 60, 65, 70
Chemical composition (%)
| C | Si | Mn | P | S |
| <0.10 | 0.4 | 1.1 | <0.025 | <0.025 |
Mechanical properties
| Re (MPa) | Rm (MPa) | A5 (%) | KV (J) |
| >420 | 510 - 610 | >22 | +20°C: >120 / -20°C: >70 / -50°C: >40 |
Electrode / Welding current
| Ø x L (mm) | Current (A) |
| 2.5x350 | 65 - 100 |
| 3.2x350/450 | 95 - 140 |
| 4.0x450 | 135 - 180 |
| 5.0x450 | 160 - 250 |
Recommendations
If necessary, dry for 2 hours at 300°C. Interpass temperature ~250°C
