StarBlaze Prime 7018
AWS A5.1: E7018 | DIN EN ISO 2560-A: E 42 4 B 32 H5 | IS 814: EB 5426H3JX
115% Recovery | -40 °C Impact Rated | Radiographic Weld Finish
A hydrogen-controlled, basic heavy-coated MMA electrode for producing crack-resistant, low-hydrogen welds on carbon-manganese and low-alloy steels. Offers excellent arc stability, smooth bead finish, and self-releasing slag—ideal for structural joints, boilers, and pressure vessels. Delivers high toughness and strength even on fine-grained, high-tensile steels down to –40 °C. LMA-type coating ensures low moisture absorption and reliable re-strike performance.
Available Packs
- Dimensions: 2.50 mm x 350 mm, 3.15 mm x 450 mm, 3.20 mm x 450 mm, 4.00 mm x 450 mm, 5.00 mm x 450 mm
- Pack Sizes: 2.5 Kg Pouch, 5 Kg Box
- Master Box: 20 Kg, Customisable packaging available on request
- Hydrogen-controlled LMA-type coating for structural reliability
- Smooth arc, low spatter, and excellent slag removal
- Produces finely rippled, radiographic-quality welds
- Excellent mechanical strength with impact toughness at –30 °C
- High metal recovery (~115%) for multi-pass structural welding
- Good resistance to cracking in restraint-sensitive joints
- Structural Steel Fabrication & Bridges
- Shipbuilding and Offshore Structures
- Boilers, Tanks & Pressure Vessels
- General Engineering and Pipe Welding
Power Generation & Infrastructure Projects
- Manual Metal Arc Welding (MMA / SMAW)
- Operates on both AC and DC+ polarity (~70V OCV recommended)
- All-position welding including vertical-up and overhead
- Suitable for structural root passes and pressure-tested joints
- Designed for consistent multipass and positional performance
- Base materials: S(P)235–S(P)420, GP240–GP280, L245–L360
- Re-drying: 350–400 °C for 1–2 hours, if required
- Excellent for restrained joints and dynamic load-bearing assemblies
- Welds are resistant to cold cracking and meet radiographic standards
- Low moisture absorption properties allow for extended shelf life in sealed storage
Product Details
Typical Weld Metal Chemical Composition (%)
| C | Si | Mn | P | S |
| 0.07 | 0.40 | 1.20 | 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-30°C) |
| As Welded | 550-620 | 450 | 28 | 100 |
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 |
