... element, Cu 56%, Ni44%, ribbon wire Product: Constantan Flat WireGrade: ConstantanChemical Composition: Copper 56%, Nickel 44% Electrical Resistivity; 0.49 ohm mm2 ... .0mm Width: 1mm-5mm We also produce other kind of copper nickel alloys, such us CuNi2, CuNi6,CuNi10,CuNi23, etc. Producer ...