AK-ERCuZn-A TIG and MIG Wire for Brazing Copper, Steel, and Cast Iron.
A brass filler metal designed for TIG and MIG welding applications, providing good fluidity and strong joints in copper, steel, copper-nickel alloys, gray cast iron, and carbide tools.
Product Overview
AK-ERCuZn-A is a copper-zinc-tin filler metal supplied as solid wire for TIG and MIG welding. It meets EN ISO 24373 CuZn40Sn, AWS A5.7 ERCuZn-A, and GB/T 9460 CuZn40Sn standards.
The wire is used in brazing applications involving copper, steel, copper-nickel alloys, gray cast iron, and inlaid carbide tools. It is suitable for both TIG and MIG processes, offering consistent performance across a range of base metals.
Application: AK-ERCuZn-A is brass oxygen-acetylene gas welding and carbon arc welding are used as filler materials. Widely used in brazing copper,steel, copper-nickel alloy, gray cast iron and inlaid carbide tools, etc.
Key Benefits
Good Fluidity in Molten State.
The melting range of AK-ERCuZn-A, with a solidus temperature of 886℃ and a liquidus temperature of 901℃, ensures good flow and wetting during the brazing process, reducing the risk of incomplete joint fusion.
High Tensile Strength and Ductility.
The deposited metal achieves a tensile strength of 375 N/mm² and an elongation of 35%, providing strong, ductile joints suitable for service under mechanical stress.
Low Impurity Levels
With aluminum content ≤0.01% and lead content ≤0.05%, the wire maintains high purity, minimizing the risk of embrittlement and ensuring reliable joint integrity.
Compatibility with Multiple Base Metals.
AK-ERCuZn-A is effective for brazing copper, steel, copper-nickel alloys, gray cast iron, and carbide tools, making it a versatile choice for diverse fabrication and repair tasks.
Where It Is Used
- Brazing copper and copper alloys.
- Joining steel to copper or copper alloys.
- Repair and joining of copper-nickel alloys.
- Brazing gray cast iron components.
- Inlaying and joining carbide tools.
Who It Is For
- Welding consumable distributors supplying brazing materials for industrial applications.
- Fabricators working with copper, steel, and cast iron in HVAC, marine, and power equipment.
- Maintenance teams performing repairs on cast iron and carbide tooling.
Problems It Solves
- Achieving reliable, strong joints between dissimilar metals like copper and steel without cracking or poor fusion.
- Finding a single filler metal that performs consistently across multiple base metals in brazing applications.
- Reducing joint defects caused by high impurity levels or poor wetting during the brazing process.
Specifications
Published by the factory for AK-ERCuZn-A ( Tig / Mig ). Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification | EN ISO 24373 CuZn40Sn AWS A5.7 ERCuZn-A GB/T 9460 CuZn40Sn |
| Element | Content |
|---|---|
| ISO24373 / AWS A5.7 Cu | 57.0-61.0 |
| AI | ≤0.01 |
| Pb | ≤0.05 |
| Sn | 0.25-1.0 |
| Zn | BaI |
| Other | ≤0.50 |
| Property | Value |
|---|---|
| Solids-Temperature | 886℃ |
| Liquids-Temperature | 901℃ |
| Density | 8.45kg/dm³ |
| Tensile Strength | 375N/mm² |
| Elongation | 35% |
| Brinell-Hardness | 85HB |
Technical Features
- Complies with EN ISO 24373 CuZn40Sn, AWS A5.7 ERCuZn-A, and GB/T 9460 CuZn40Sn standards.
- Copper content: 57.0–61.0%
- Tin content: 0.25–1.0%
- Zinc content: Balanced (BaI)
- Aluminum: ≤0.01%
- Lead: ≤0.05%
- Other elements: ≤0.50%
- Solidus temperature: 886℃
- Liquidus temperature: 901℃
- Density: 8.45 kg/dm³
- Tensile strength: 375 N/mm².
- Elongation: 35%
- Brinell hardness: 85 HB.
Use Guide
- Select wire diameter based on joint thickness and process requirements. Ensure consistent wire feed and shielding gas flow during MIG welding.
- Clean base metal surfaces thoroughly to remove oil, grease, oxides, and contaminants before welding.
- Preheat workpieces if required, especially when joining thick or heat-conductive materials like copper.
- Maintain proper torch angle and travel speed during TIG and MIG processes to ensure full fusion and consistent bead appearance.
How It Compares
AK-ERCuZn-A is a brass filler metal suitable for TIG and MIG brazing. It differs from pure copper filler metals in that it has lower melting point and better fluidity, making it easier to use on thin sections and dissimilar metals. Compared to silver-based brazing alloys, it offers lower cost and good mechanical properties, though with lower corrosion resistance in aggressive environments.
Related Grades
Other welding wire in the same family.
AK-ERCuZn-A ( Tig / Mig ) Questions
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