CuNi 44( constantan)--- Copper 55%, nickel 45%. Thickness: 0.1mm to 3mm Width: 0.5mm ... . Heating Resistance Alloy, Nickel Chromium Alloy, Nickel Iron Alloy, Nickel Copper Alloy, Iron Chrome Alumium Alloy, Kovar, Invar, Nichrome, Soft Expension ... , Alloy Bar, Alloy Plate, Heating elementsFine Wire, Tankii Produce. CuNi23/Copper nickel alloy/Copper alloy