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Copper Alloy

JACKSUN ALLOY CuNiAl

AWS/ASME: A5.7 ERCuNiAl

JACKSUN ALLOY-CuNiAl is a solid copper-nickel-aluminium alloy wire designed for MIG/TIG welding of copper-nickel and copper-nickel-aluminium alloys.

  • Excellent corrosion resistance in marine and chemical environments.
  • Suitable for joining copper, bronze, nickel-aluminium bronze, and copper-nickel alloys.
  • Provides smooth, stable arc and high-quality welds.
  • Ideal for shipbuilding, marine piping, heat exchangers, and industrial equipment.
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Technical Data

Product Specifications

1. Typical Chemical Composition

ZnNiAlFeMnSi
≤ 0.104 – 5.58.50-9.503.00-5.000.60-3.50≤ 0.10

2. Typical Mechanical Properties of Weld Metal

PropertyUTS (MPa)Yield Strength (MPa)Elongation (%)
Requirement (AWS A5.7 ERCuNiAl)≥ 480≥ 380≥ 16
Typical Values480 – 580380 – 46014 – 28

3. Recommended Welding Parameters — AWS A5.7 ERCuNiAl

Welding PositionCurrent (A)Voltage (V)Shielding GasGas Flow (L/min)
Flat / Horizontal180 – 28018 – 24100% Ar12 – 20
Vertical / Overhead150 – 22016 – 22100% Ar10 – 18
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