STARBLAZE 7018 SPL
AWS A5.1: E 7018 H4 | DIN EN ISO 2560-A: E 42 4 B 32 H5 | IS 814: EB 5426H3JX
Superior Weldability, Low Hydrogen, Radiographic Quality
A hydrogen-controlled iron powder basic heavy-coated MMA electrode designed for crack-resistant, reliable welds on unalloyed and low-alloy steels. StarBlaze 7018 (SPL) offers superior weldability, ultra-smooth weld bead appearance, self-releasing slag, very low spatter levels, and excellent toughness properties at low temperatures. Ideal for structural engineering, shipbuilding, bridges, boilers, tanks, and heavy fabrication, it produces radiographic quality welds, including demanding out-of-position and pipe welding applications. Recommended for service temperatures down to -40°C.
Available Packs
Dimensions: 2.50 mm x 350 mm, 3.15 mm x 450 mm, 4.00 mm x 450 mm, 5.00 mm x 450 mm
Pack Sizes: 2.5 Kg Pouch, 4 Kg Box, 5 Kg Box
Master Box: 20 Kg, 30 Kg, 40 Kg, Customisable packaging available on request
Superior weldability
Ultra-smooth finely rippled weld beads
Less than 4 ml diffusible hydrogen level
Excellent mechanical properties
Self-releasing slag
Very low spatter generation
Smooth bead appearance
Good strike and re-strike characteristics
Radiographic quality welds
Suitable for out-of-position welding including pipe welding
Excellent low-temperature toughness
Structural Steel Construction
Shipbuilding and Marine Fabrication
Bridge Construction
Boiler Manufacturing
Tank Fabrication
Heavy Engineering and Fabrication
Oil & Gas Projects
Industrial Infrastructure Projects
Manual Metal Arc Welding (MMA/SMAW) of unalloyed and low-alloy steels
Positional welding in flat, horizontal, vertical up and overhead positions
Pipe welding applications
Multi-pass structural welding
Heavy fabrication and repair welding
Critical welds requiring radiographic quality
Suitable for S(P)235 to S(P)420 steels
Compatible with GP240, GP280, L245 to L360 grades
Recommended for service temperatures down to -40°C
Excellent resistance to hydrogen-induced cracking
Keep electrodes dry and avoid condensation
Re-dry at 350–400°C for 1–2 hours if necessary
Suitable for AC and DC+ polarity
Optimised for demanding site and fabrication conditions
Product Details
Typical Chemical Composition (%)
| C | Mn | Si | P | S |
| 0.07 | 1.20 | 0.40 | 0.020 | 0.020 |
Typical Mechanical Properties (All Weld Metal)
| Heat Treatment | Yield Strength Rp (N/mm²) | Tensile Strength Rm (N/mm²) | Elongation A5 (%) | Charpy Impact Value (ISO-V J -30°C) |
| As Welded | ≥ 450 | 550-620 | ≥ 28 | ≥ 80 |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 50-90 |
| 3.15 | 100-140 |
| 3.20 | 100-140 |
| 4.00 | 130-180 |
| 5.00 | 180-230 |
