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

  • Standard Alloy Chemical Composition(%) Solidus Liquidus Application
    AWS A5.7 CuNi30 Cu:Bal. Ni:29.0-32.0 Si:0.1-0.25 Mn:1.0 Fe:0.4-0.75 Ti:0.2-0.5 Other:0.5 1180℃ 1240℃ -
    ISO 24373 CuNi10 Cu:Bal. Ni:9.0-11.0 Si:<0.2 Mn:0.5-1.5 Fe:1.0-2.0 Ti:0.2-0.5 Other:0.5 1100℃ 1145℃ -

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