AK-ERCuMnNiAl TIG / MIG Wire for Corrosion-Resistant Overlay on Iron-Casting and Low-Alloy Steel.
A copper-based filler metal with high manganese, aluminum, and nickel content, designed for overlay welding where resistance to corrosion and wear is critical.
Product Overview
AK-ERCuMnNiAl (TIG / MIG) is a copper-based welding wire formulated for overlay welding on iron-casting and low-alloy steel components requiring enhanced corrosion resistance. It is suitable for both TIG and MIG welding processes.
The wire meets EN ISO 24373 CuMn13Al8Fe3Ni2 and AWS A5.7 ERCuMnNiAl GB/T 9460 CuMn13Al8Fe3Ni2 standards, ensuring consistent composition and performance across applications.
Its chemical composition includes 7.0-8.5% aluminum, 11.0-14.0% manganese, 1.50-3.0% nickel, and 2.0-4.0% iron, with lead limited to ≤0.02% and silicon at 0.10%.
The deposited metal has a solidus temperature of 945℃ and a liquidus temperature of 985℃, with a density of 7.4 kg/dm³, tensile strength between 800-900 N/mm², elongation of 10%, and Brinell hardness of 180-240 HB.
Application: Best for the overlay welding of iron-casting and low-alloy steel that especially need corrosion resistance.
Key Benefits
High Corrosion Resistance in Overlay Applications.
The combination of aluminum, nickel, and manganese in the wire creates a protective surface layer on iron-casting and low-alloy steel, improving resistance to corrosive environments.
Stable Weld Pool with Controlled Solidification.
With a solidus temperature of 945℃ and liquidus temperature of 985℃, the wire provides a predictable solidification range, reducing the risk of cracking during overlay deposition.
Good Mechanical Properties in Deposited Metal.
The deposited weld metal achieves tensile strength between 800-900 N/mm² and elongation of 10%, offering a balance of strength and ductility suitable for service under mechanical stress.
Low Impurity Levels for Clean Welds.
Lead is limited to ≤0.02%, silicon to 0.10%, and zinc to ≤0.15%, minimizing the risk of hot cracking and ensuring a clean, sound weld bead.
Where It Is Used
- Overlay welding on iron-casting components exposed to corrosive media.
- Reinforcement of low-alloy steel surfaces in chemical or marine environments.
- Repair and build-up of wear-prone areas on industrial machinery parts.
- Welding applications requiring a combination of corrosion resistance and moderate mechanical strength.
Who It Is For
- Welding consumable distributors supplying specialty filler metals for industrial repair and maintenance.
- Fabricators and repair shops working with iron-casting and low-alloy steel in aggressive service environments.
- Maintenance teams responsible for extending the life of components in corrosive or high-wear conditions.
Problems It Solves
- Achieving corrosion resistance in overlay welds on iron-casting and low-alloy steel without compromising mechanical integrity.
- Sourcing a single filler metal that meets both EN ISO 24373 and AWS A5.7 standards for critical applications.
- Reducing weld defects caused by high lead or silicon content in filler metals used for overlay work.
Specifications
Published by the factory for AK-ERCuMnNiAl (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 CuMn13Al8Fe3Ni2 |
| Classification 2 | AWS A5.7 ERCuMnNiAl GB/T 9460 CuMn13Al8Fe3Ni2 |
| Element | Content |
|---|---|
| Cu | ≤bal |
| Al | 7.0-8.5 |
| Fe | 2.0-4.0 |
| Mn | 11.0-14.0 |
| Ni | 1.50-3.0 |
| Pb | ≤0.02 |
| Si | 0.10 |
| Sn | —— |
| Zn | ≤0.15 |
| Other | ≤0.40 |
| Property | Value |
|---|---|
| Solids-Temperature | 945℃ |
| Liquids-Temperature | 985℃ |
| Density | 7.4kg/dm³ |
| Tensile Strength | 800-900N/mm² |
| Elongation | 10% |
| Brinell-Hardness | 180-240HB |
Technical Features
- Complies with EN ISO 24373 CuMn13Al8Fe3Ni2 and AWS A5.7 ERCuMnNiAl GB/T 9460 CuMn13Al8Fe3Ni2.
- Chemical composition: Cu ≤bal, Al 7.0-8.5%, Fe 2.0-4.0%, Mn 11.0-14.0%, Ni 1.50-3.0%, Pb ≤0.02%, Si 0.10%, Zn ≤0.15%, Other ≤0.40%
- Solidus temperature: 945℃, Liquidus temperature: 985℃.
- Density: 7.4 kg/dm³
- Tensile strength: 800-900 N/mm².
- Elongation: 10%
- Brinell hardness: 180-240 HB.
Use Guide
- Select wire diameter based on joint thickness and welding process; ensure shielding gas is appropriate for TIG or MIG application.
- Clean base metal surfaces thoroughly to remove oil, rust, and scale before welding to avoid contamination.
- Maintain consistent travel speed and heat input to achieve uniform bead profile and avoid overheating.
- Store wire in dry conditions to prevent moisture absorption; avoid prolonged exposure to humid environments.
How It Compares
AK-ERCuMnNiAl differs from standard copper-based wires like ERCuSn in that it contains higher manganese and aluminum, which enhance corrosion resistance and hardness. Unlike ERNiCr-3, which is used for high-temperature and oxidation resistance, AK-ERCuMnNiAl is optimized for corrosion protection in moderate-temperature environments. It is not suitable for high-temperature service above 945℃, where nickel-based alloys would be preferred.
Related Grades
Other welding wire in the same family.
AK-ERCuMnNiAl (TIG / MIG) Questions
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