ERNiCu-7 is a nickel-copper alloy welding wire designed for welding copper-bearing and dissimilar steels. It offers excellent corrosion resistance, high strength, and good ductility, making it ideal for marine, chemical, and power industry applications. The wire provides stable arc performance, smooth bead appearance, and minimal spatter for high-quality welds.
Its unique nickel-copper composition ensures strong resistance to seawater and industrial corrosion, as well as good tolerance to slight surface contamination. ERNiCu-7 is suitable for a variety of industrial applications, including shipbuilding, offshore structures, heat exchangers, and machinery manufacturing.
ERNiCu-7
ERNiCu-7
ERNiCu-7
| Standard | Classification |
| AWS A5.14 | ERNiCu-7 |
| EN ISO 18274-A | NiCu7 |
| UNS | N04060 |
| UNS (Weld Metal) | N04400 |
| Element | Ni+Co | C | Mn | Fe | S | Si | Cu | Al | Ti | P | Others |
| Content(%) | 62.0-69.0 | ≤ 0.15 | ≤ 4.0 | ≤ 2.5 | ≤ 0.015 | ≤ 1.25 | Remainder | ≤ 1.25 | 1.5-3.0 | ≤ 0.020 | ≤ 0.50 |
| Property | Value |
| Tensile Strength | ≥ 550 MPa |
| Yield Strength | ≥ 300 MPa |
| Elongation | ≥ 40% |
| Impact Toughness | Good at ambient temperature |
Mechanical properties may vary depending on welding parameters, base metal, and joint design.
| Category | Details |
| Base Materials | Copper-bearing steels, dissimilar steels |
| Industrial Applications | Shipbuilding, offshore structures, chemical plants, heat exchangers, machinery fabrication |
| Service Environment | Corrosive environments, marine, general industrial applications |
| Welding Process | MIG Welding (GMAW), TIG Welding (GTAW) |
| Available Form | Solid wire on spool or drum |
Diameter:
Packaging:
Ø Factory direct pricing with stable supply
Ø Strict quality control for consistent welding performance
Ø Smooth wire feeding and minimal spatter for efficient operation
Ø Export experience to 80+ countries
Ø Professional technical support and fast delivery
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