Copper-Nickel Welding Alloy
Copper-Nickel Welding Alloy

ERCuNi (NA67) is used for gas metal and gas tungsten arc welding. Can also be used by oxy-fuel welding of 70/30,80/20, and 90/10 copper nickel alloys. A barrier layer of nickel alloy 610 is recommended prior to overlaying steel with GMAW weld process. Note: Other shielding Gases may be used for Tig welding. They are the materials of first choice for seawater pipework and condenser/heat exchanger service

  • Alloy Chemical Composition(%) Solidus Liquidus AWS A5.7 BS EN 14640 DIN 1733
    CuNi10 Cu:Bal. Ni:10 Si:0.2 Mn:1.0 Fe:1.5 Ti:0.3 P:0.02 Other:0.4 1100℃ 1145℃ CuNi10 SG-CuNi10Fe
    CuNi30 Cu:Bal. Ni:30 Si:0.25 Mn:1.0 Fe:0.5 Ti:0.3 P:0.02 Other:0.4 1180℃ 1240℃ ERCuNi CuNi30 SG-CuNi30Fe

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