Home > Nickel Alloys > AWS Class ERCuNi MIG and TIG Filler Welding Wire and Rod
From Canberra, Australia, Marsh Nickel Alloys is a trusted source for high-performance welding consumables, specializing in the AWS Class ERCuNi MIG and TIG filler wires and rods. We understand the critical nature of joining copper-nickel alloys and are dedicated to supplying products that meet the most demanding specifications. Our commitment lies in providing reliable solutions that ensure the integrity and longevity of your projects, backed by local expertise and a focus on quality that our customers can depend on for their most important work.
The ERCuNi classification covers a family of copper-nickel wires, typically with compositions like 70% copper and 30% nickel, often enhanced with small but crucial additions of iron and manganese. This specific blend is what gives these alloys their excellent mechanical properties, including strong tensile strength and good ductility. They are particularly valued for their outstanding corrosion resistance, especially in challenging marine environments where they stand up remarkably well to saltwater, making them a go-to choice for durable, long-lasting welds in critical applications.
| Classification | AWS A5.14, ERCuNi |
| Form | MIG spools, TIG cut lengths, Reels and Coils |
| Type Of Welding | Inert Gas Welding |
| Standard TIG straight lengths are available | 36” (914 mm) or 39” (1000 mm) lengths. Other lengths available upon request. |
| AWS ERCuNi MIG & TIG Filler Metal Application & uses |
|
| Fe | Pb | Mn | P | Si | Ti | Ni +Co | Cu +Ag |
| 0.59 | 0.001 | 0.69 | 0.001 | 0.07 | 0.30 | 30.3 | Balance |
| Tensile Strength MPa(ksi) | Yield Strength MPa(ksi) | Elongation % | |
|---|---|---|---|
| Typical results as welded | 54,000 psi | 21,500 psi | 32% |
This specific filler metal is indispensable for welding copper-nickel alloys themselves, which are widely used in systems that simply cannot fail. You’ll find it at work in the intricate pipework of shipbuilding and offshore platforms, within the heat exchangers and condensers of desalination plants, and throughout marine engineering projects. Its superior resistance to saltwater corrosion and biofouling makes it the preferred option for ensuring the structural integrity of components that are constantly exposed to the harsh, punishing conditions of the sea.
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AWS Class ERCuNi MIG and TIG filler welding wires and rods are widely used in the marine and offshore industries due to their outstanding resistance to sea water corrosion and are ideal for welding copper and nickel alloys used in in ships, marine hardware and medical devices. This filler material is also suitable for applications involving heat exchangers and piping systems requiring high oxidation and corrosion resistance Its excellent weldability and durability make it desirable for harsh environments where long-term performance is required.
