Oerlikon Supranel NiCu7 description: SUPRANEL NiCu7 is a basic-coated MMA electrode used for joining similar 70Ni - 30Cu, Monel alloys, for welding the clad side of joints in steel clad with a nickel-copper alloy, and surfacing steel with nickel-Typical specications for the nickel-copper base metal are ASTM B127, B163, B164, B165, all of which have UNS Number N04400. SUPRANEL NiCu7 typical applications include the chemical industry and seawater desalination plants. Suitable for joining and for surfacing of unalloyed or low-alloy steels and cast iron. The weld metal has a high corrosion resistance in saline solution and seawater.