• Huona (Shanghai) New Material Co., Ltd.
    Alfred***
    We received the goods, everything went fine. Perfect packaging, good product quality, good price - we are satisfied.
  • Huona (Shanghai) New Material Co., Ltd.
    May***
    The product quality is very good, beyond my expectations, the actual use of fully meet my needs, we will buy again.
  • Huona (Shanghai) New Material Co., Ltd.
    Matthew***
    I bought low expansion alloy from Joy, She is a very responsible lady, Huona's products quality is pretty good.
Contact Person : Roy
Phone Number : +86 18930254719
WhatsAPP : +8618930254719

ECuSi-B Copper Silicon Alloy Welding Wire with High Fluidity & Crack Resistance in 0.8–5.0 mm Diameter

Place of Origin CHINA
Brand Name HUONA
Certification ISO9001
Model Number WIRE
Minimum Order Quantity 5KG
Price NEGOTATION
Packaging Details CARGO
Delivery Time A WEEK
Payment Terms T/T,Western Union
Supply Ability 5000TON /MONTH
Product Details
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
Highlight

High Fluidity Copper Silicon Alloy Welding Wire

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Crack Resistance ECuSi-B Welding Rod

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0.8–5.0 mm Diameter CuSi3 Welding Wire

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Product Description

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

  • Automotive components and repair welding

  • Copper and silicon bronze fabrication

  • Steel-to-copper dissimilar metal welding

  • Pipes, fittings, and valves

  • General mechanical and industrial parts


Features

  • Excellent weld pool fluidity

  • Low crack sensitivity

  • Smooth and clean weld appearance

  • Good corrosion resistance

  • Easy handling and stable welding performance