AK-ERCuSi-A TIG and MIG Welding Wire for Brass and Galvanized Steel.
A copper-silicon-manganese alloy wire designed for butt and surfacing welding of brass, with optimized flow and crack resistance in MIG welding of galvanized steel sheets.
Product Overview
AK-ERCuSi-A is a TIG and MIG welding wire formulated for joining brass and surfacing applications, particularly effective in MIG welding of galvanized steel sheets. The wire's composition balances silicon and manganese content to improve fluidity and reduce solidification cracking in the weld zone.
It meets EN ISO 24373 CuSi3Mn1 and AWS A5.7 ER5CuSi-A GB/T 9460 CuSiMn standards, ensuring compatibility with international specifications for copper-based filler metals. The wire is suitable for pulse argon arc welding in surfacing operations, especially on large weldments where preheating is required to avoid cracking.
Application: Applied to butt welding and surfacing welding of brass, especially suitable for MIG welding of galvanized steel sheets, and preheating is required for MlG surfacing welding of large weldments . Pulse argon arc welding is recommended for surfacing steel.
Key Benefits
Low Silicon Content for Controlled Solidification.
With silicon between 2.8% and 4.0%, the wire provides sufficient deoxidation and fluidity without excessive hardening, reducing the risk of solidification cracking in thick or complex joints.
Good Flow and Crack Resistance in Galvanized Steel Welding.
The composition minimizes spatter and promotes clean weld pool behavior, making it suitable for MIG welding of galvanized steel sheets where zinc vaporization can cause porosity.
Suitable for Pulse Argon Arc Surfacing.
Recommended for pulse argon arc welding in surfacing applications, which allows better control of heat input and reduces distortion in large weldments.
Preheating Support for Large Weldments.
Preheating is advised before MIG surfacing of large weldments to reduce thermal stress and prevent cracking in the heat-affected zone.
Where It Is Used
- Butt welding of brass components.
- Surfacing welding on brass and copper alloys.
- MIG welding of galvanized steel sheets.
- Pulse argon arc surfacing of large steel structures.
Who It Is For
- Welding consumable distributors supplying copper alloy welding solutions.
- Fabricators working with brass and galvanized steel in automotive and HVAC applications.
- Maintenance teams performing surfacing repairs on large steel components.
Problems It Solves
- Cracking in welds when surfacing large steel structures without preheating.
- Porosity and poor bead quality when welding galvanized steel due to zinc vaporization.
- Inconsistent weld pool behavior in brass joints caused by improper filler metal chemistry.
Specifications
Published by the factory for AK-ERCuSi-A (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 CuSi3Mn1 |
| Classification 2 | AWS A5.7 ER5CuSi-A GB/T 9460 CuSiMn |
| Element | Content |
|---|---|
| Cu | ≤bal |
| Al | ≤0.02 |
| Fe | ≤0.50 |
| Mn | 0.50-1.5 |
| P | ≤0.05 |
| Pb | ≤0.02 |
| Si | 2.8-4.0 |
| Sn | ≤0.20 |
| Zn | ≤0.40 |
| Other | ≤0.50 |
| Property | Value |
|---|---|
| Solids-Temperature | 910℃ |
| Liquids-Temperature | 1025℃ |
| Density | 85kg/dm³ |
| Tensile Strength | 330-370N/mm² |
| Elongation | 40% |
| Brinell-Hardness | 80-90HB |
Technical Features
- Composed of copper with silicon 2.8-4.0%, manganese 0.50-1.5%, and trace elements below specified limits.
- Solidus temperature at 910℃ and liquidus temperature at 1025℃, indicating a narrow melting range suitable for controlled welding.
- Density of 85 kg/dm³, consistent with standard copper alloy wires.
- Tensile strength between 330 N/mm² and 370 N/mm², with elongation of 40%
- Brinell hardness between 80 HB and 90 HB, suitable for post-weld forming or machining.
Use Guide
- Select wire diameter based on joint thickness and welding position; use pulse argon arc welding for surfacing to control heat input.
- Preheat large weldments to reduce thermal stress before MIG surfacing operations.
- Clean galvanized surfaces thoroughly before welding to minimize zinc fumes and porosity.
- Maintain proper shielding gas flow with pure argon or argon-rich mixtures to ensure weld pool protection.
How It Compares
AK-ERCuSi-A is a copper-silicon-manganese alloy wire suitable for brass and galvanized steel welding. It differs from standard ER2319 (Al-Si) in that it is not designed for aluminum alloys. For high-strength copper alloys, ER307 may be preferred, but it requires higher heat input and is less suitable for thin galvanized sheets.
Related Grades
Other welding wire in the same family.
AK-ERCuSi-A (TIG / MIG) Questions
What standards does AK-ERCuSi-A meet?
What is the silicon content range in AK-ERCuSi-A?
What is the tensile strength and elongation of the deposited metal?
Is preheating required for surfacing welding?
What packing is AK-ERCuSi-A (TIG / MIG) supplied in?
Can we test AK-ERCuSi-A (TIG / MIG) before placing a production order?
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