Home > Nickel Alloys > AWS Class ECuNi Coated Electrodes
AWS Class ECuNi coated electrodes are produced in Da Nang, Vietnam, for welding copper-nickel alloys and their combinations with steel. They are well-known for their high resistance to seawater corrosion, making them perfect for shipbuilding, desalination plants, and offshore tasks. Local producers ensure these electrodes provide stable arcs, minimal spatter, and smooth weld profiles. Their versatility makes them a trusted choice for fabricators working with marine, power, and industrial equipment. ECuNi electrodes consistently deliver performance, becoming essential for industries that need strength, ductility, and long-lasting corrosion resistance in chloride-rich environments.
ECuNi electrodes are primarily made of copper with significant nickel content, usually ranging between 65-70% Cu and 30-35% Ni. This composition gives them high resistance to seawater, stress corrosion, and erosion. The electrodes produce welds with tensile strength around 380–480 MPa, good elongation, and excellent toughness. Their properties allow them to withstand biofouling and brackish water conditions, ensuring durability in marine environments. These electrodes also maintain thermal stability, providing reliable performance even at high temperatures, making them suitable for joining copper-nickel alloys, clad steels, and corrosion-resistant piping systems used in tough marine and industrial settings.
| Classification | AWS A5.11, A5.1, ECuNi |
| Form | Welding Electrode, Welding Rods |
| Type Of Current | Direct Current Electrode Positive (DCEP) |
| Diameters | 3/32”, 1/8”, 5/32”, 3/16” or 2.5mm, Ø 3.2mm, Ø 4.0mm, Ø 5.0mm |
| Size | 2.0mm ∞ 5.0mm |
| AC/DC+ | 50-80, 80-110, 100-135, 140-180 |
| Welding Positions | All positions 5/32” & 3/16” recommended for use in flat & horizontal positions only (F, V, OH, H) |
| AWS ECuNi Coated Electrodes Application & uses |
|
| Mn | Fe | Si | Cu including Ag | Ni including Cobalt | P | Pb | Ti | Other |
| 1.00-2.50 | 0.40-0.75 | 0.50 | Remainder | 29.0-33.0 | 0.020 | 0.02 | 0.50 | 0.50 |
At Xuan Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of AWS Class ECuNi Coated Electrodes in Da Nang, Vietnam, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Vietnam, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
ECuNi coated electrodes are widely used in industries that work in seawater and other corrosive areas. Their main applications include fabricating and repairing seawater desalination equipment, ship hulls, marine condensers, and offshore pipelines. They also join copper-nickel pipes, fittings, and tubing in shipbuilding and chemical processing. The electrodes are valuable for overlay welding, providing corrosion protection on steel surfaces. Their resistance to biofouling and seawater attacks makes them ideal for heat exchangers and evaporators. ECuNi electrodes are essential for ensuring long-term durability in marine structures and fluid-handling equipment faced with aggressive conditions.
