STARBLAZE PRIME NiCu7
AWS A5.11: E NiCu-7 | EN ISO 14172: E Ni 4060 (NiCu30Mn3Ti)
Monel Alloy Welding, Seawater Corrosion Resistance, Universal Repair Electrode
A specially designed basic coated nickel-copper alloy electrode for welding and surfacing Monel alloys, Monel clad steels, and dissimilar metal combinations. StarBlaze PRIME NiCu7 provides a smooth and forceful arc, excellent mechanical properties, and porosity-free weld deposits. The weld metal offers outstanding resistance to seawater, salts, and reducing acids, making it ideal for marine, offshore, chemical processing, and desalination applications. It is also highly suitable for joining Monel alloys to carbon steels, low alloy steels, copper alloys, and copper-nickel alloys. The weld deposit maintains excellent toughness and corrosion resistance across a wide service temperature range from -196°C to +450°C.
Available Packs
Dimensions: 2.50 mm x 350 mm, 3.15 mm x 350 mm, 3.20 mm x 350 mm, 4.00 mm x 350 mm
Pack Sizes: 2.5 Kg Vacuum Pack, 4 Kg Vacuum Pack, 5 Kg Vacuum Pack
Master Box: 20 Kg, 30 Kg, 40 Kg, Customisable packaging available on request
Nickel-copper alloy electrode
Smooth and forceful arc characteristics
Universal Monel repair and joining electrode
Porosity-free weld deposits
Excellent seawater corrosion resistance
Resistant to salts and reducing acids
Excellent mechanical properties
Suitable for dissimilar metal welding
Excellent low temperature toughness
Service temperature range from -196°C to +450°C
Suitable for DC+ polarity
Marine and Shipbuilding Industry
Offshore Structures
Desalination Plants
Chemical Processing Industry
Petrochemical Industry
Heat Exchanger Manufacturing
Oil & Gas Industry
Maintenance and Repair Workshops
Manual Metal Arc Welding (MMA/SMAW)
Monel alloy welding
Monel clad steel welding
Dissimilar metal welding
Repair and reclamation welding
Corrosion-resistant surfacing
Marine equipment fabrication
Chemical plant maintenance
Designed for welding Monel 400, R405 and K500 alloys
Suitable for Monel clad steels
Suitable for Material No. 2.4360 (NiCu30Fe)
Suitable for Material No. 2.4375 (NiCu30Al)
Suitable for UNS N04400
Suitable for UNS N05500
Suitable for joining Monel alloys to carbon steels
Suitable for joining Monel alloys to low alloy steels
Suitable for joining Monel alloys to copper and copper-nickel alloys
Preheat sections above 25 mm thickness
Maintain a short arc length during welding
Clean slag thoroughly between passes
Allow slow cooling to room temperature
Keep dry and avoid condensation
Re-dry at 350°C for 1–2 hours if necessary (maximum 3 cycles)
Product Details
Typical Chemical Composition (%)
| C | Mn | Fe | P | S | Si | Ni | Cu |
| 0.03 | 3.50 | 2.00 | 0.015 | 0.010 | 0.40 | Balance | 29.00 |
Typical Mechanical Properties (All Weld Metal)
| Yield Strength Rp (N/mm²) | Tensile Strength Rm (N/mm²) | Elongation A5 (%) | Hardness (BHN) |
| ≥ 230 | ≥ 490 | ≥ 30 | 140 – 170 |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 50-70 |
| 3.15 | 80-100 |
| 3.20 | 80-100 |
| 4.00 | 100-130 |
