ECuSi-B Copper Silicon Alloy Welding Wire with High Fluidity & Crack Resistance in 0.8–5.0 mm Diameter
Product Description
ECuSi-B (also known as CuSi3, UNS C65500, or CW102C) is a copper-silicon alloy welding rod/wire designed for welding copper alloys, silicon bronze, and dissimilar joints between copper alloys and carbon steel or stainless steel.
This alloy features excellent fluidity, low crack sensitivity, and good corrosion resistance, producing smooth and clean weld beads.
It is widely used in automotive parts, mechanical components, piping systems, and general industrial fabrication.
Chemical Composition (Typical) / Approximate Values
| Element | Content (%) |
|---|---|
| Copper (Cu) | Balance (~95–97) |
| Silicon (Si) | 2.8 – 4.0 |
| Manganese (Mn) | ≤ 1.0 |
| Zinc (Zn) | ≤ 1.0 |
| Iron (Fe) | ≤ 0.5 |
| Others | ≤ 0.5 |
Note: Exact composition may vary slightly depending on manufacturing standard and application requirements.
Technical Parameters
| Parameter | Specification |
|---|---|
| Material Type | Copper-Silicon Alloy (ECuSi-B / CuSi3 / UNS C65500 / CW102C) |
| Product Form | Welding Rod / Welding Wire |
| Diameter | 0.8 – 5.0 mm (customizable) |
| Length | 250 – 1000 mm (customizable) |
| Melting Point | Approx. 900–1020 °C |
| Conductivity | Moderate |
| Corrosion Resistance | Good |
| Packaging | Coils or straight rods |
Custom Attributes
| Attribute | Options / Description |
|---|---|
| Diameter Tolerance | ±0.01 mm |
| Surface Finish | Bright, Polished |
| Packaging Type | Coil, Bundle, Straight Rods |
| Heat Treatment | As-drawn, Annealed |
| Welding Method | TIG (GTAW), MIG (GMAW), Brazing |
| Certification | ISO 9001, RoHS, REACH (optional) |
| Special Coating | Optional anti-oxidation coating |
| Length Customization | Any length within 250–1000 mm |
Applications
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Automotive components and repair welding
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Copper and silicon bronze fabrication
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Steel-to-copper dissimilar metal welding
-
Pipes, fittings, and valves
-
General mechanical and industrial parts
Features
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Excellent weld pool fluidity
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Low crack sensitivity
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Smooth and clean weld appearance
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Good corrosion resistance
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Easy handling and stable welding performance
Get in Touch
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