AK-ERCuNi-Al (TIG / MIG) Wire for Copper-Aluminum Alloys and Erosion-Resistant Welding.
A copper-nickel-aluminum alloy wire designed for TIG and MIG welding of copper-aluminum alloys, aluminum-coated steel, and brass tubes requiring resistance to erosion and wear.
Product Overview
AK-ERCuNi-Al (TIG / MIG) is a welding wire formulated for use in gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW) of copper-aluminum alloys, aluminum-coated steel, and brass tubes in machinery and chemical industry applications.
It is also suitable for hard facing and welding in shipbuilding where iron components are involved, particularly where erosion resistance is required in the final weld deposit.
Application: Recommended for the welding and hard facing of copper-aluminum alloys, aluminum coated steel in machinery and chemical industry as well as for iron weldingin shipbuilding. Also excellent for the welding of brass tube and copper-alumi num that requires resistance to erosion.
Key Benefits
Erosion Resistance in Critical Joints.
The alloy composition delivers a weld metal with high resistance to erosion, making it suitable for applications involving fluid flow, abrasion, or mechanical wear.
Compatibility with Copper-Aluminum and Coated Steels.
The wire is specifically designed to join copper-aluminum alloys and aluminum-coated steel, ensuring good metallurgical compatibility and joint integrity.
Stable Melting Range for Controlled Welding.
With a solidus temperature of 1015℃ and a liquidus temperature of 1045℃, the wire provides a predictable melting range suitable for controlled heat input during welding.
Balanced Mechanical Properties
The deposited metal achieves tensile strength between 450 N/mm² and 560 N/mm², elongation of 10%, and Brinell hardness between 150 HB and 170 HB, supporting durability under mechanical stress.
Where It Is Used
- Welding and hard facing of copper-aluminum alloys in machinery and chemical industry.
- Joining aluminum-coated steel in industrial equipment.
- Welding brass tubes requiring erosion resistance.
- Iron welding in shipbuilding applications where wear resistance is critical.
Who It Is For
- Welding consumable distributors supplying specialty alloys for industrial fabrication.
- Machinery and chemical plant fabricators working with dissimilar metals.
- Shipbuilding contractors requiring durable welds in high-wear areas.
- Maintenance teams repairing brass tubes and erosion-prone components.
Problems It Solves
- Achieving reliable welds between copper-aluminum alloys and aluminum-coated steel without cracking or poor fusion.
- Providing a single wire solution for both TIG and MIG processes in erosion-sensitive applications.
- Meeting performance requirements for wear and erosion resistance in critical joints without compromising joint integrity.
Specifications
Published by the factory for AK-ERCuNi-Al (TIG / MIG). Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification 1 | EN ISO 24373 CuAl9Ni5Fe3Mn2 |
| Classification 2 | AWS A5.7 ERCuNiAl GB/T 9460 CuAl9Ni5Fe3Mn2 |
| Element | Content |
|---|---|
| Cu | ≤bal |
| Al | 8.5-9.5 |
| Fe | 3.0-5.0 |
| Mn | 0.60-3.5 |
| Ni | 4.0-5.5 |
| Pb | ≤0.02 |
| Si | 0.10 |
| Sn | —— |
| Zn | ≤0.10 |
| Other | ≤0.50 |
| Property | Value |
|---|---|
| Solids-Temperature | 1015℃ |
| Liquids-Temperature | 1045℃ |
| Density | 7.5kg/dm³ |
| Tensile Strength | 450-560N/mm² |
| Elongation | 10% |
| Brinell-Hardness | 150-170HB |
Technical Features
- Complies with EN ISO 24373 CuAl9Ni5Fe3Mn2 and AWS A5.7 ERCuNiAl GB/T 9460 CuAl9Ni5Fe3Mn2 standards.
- Chemical composition: Cu ≤ bal, Al 8.5–9.5%, Fe 3.0–5.0%, Mn 0.60–3.5%, Ni 4.0–5.5%, Pb ≤ 0.02%, Si 0.10%, Zn ≤ 0.10%, Other ≤ 0.50%
- Solidus temperature: 1015℃, Liquidus temperature: 1045℃.
- Density: 7.5 kg/dm³
- Tensile strength: 450–560 N/mm².
- Elongation: 10%
- Brinell hardness: 150–170 HB.
Use Guide
- Select welding parameters based on joint thickness, position, and process (TIG or MIG). Use shielding gas as specified for the process.
- Clean base metal surfaces from oil, grease, oxides, and coatings before welding to ensure sound fusion.
- Maintain consistent travel speed and heat input to avoid overheating or underfilling the weld pool.
- Store wire in a dry environment to prevent moisture absorption, especially in humid conditions.
How It Compares
AK-ERCuNi-Al (TIG / MIG) is designed for copper-aluminum alloys and erosion-resistant joints, differing from standard copper or brass wires. It offers higher nickel and aluminum content than typical CuAl alloys, improving strength and wear resistance. Unlike pure copper wires, it is not suitable for applications requiring high electrical conductivity. For high-strength, non-erosion applications, other nickel-based or bronze wires may be considered instead.
Related Grades
Other welding wire in the same family.
AK-ERCuNi-Al (TIG / MIG) Questions
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