What is an alloy of copper and nickel used in electrical resistance called?

cupro-nickel is the term referring to copper / nickel alloys. The particular alloy used in electrical resistors has 45% nickel, and is called constantan. See related link.
cupro-nickel is the term referring to copper / nickel alloys. The particular alloy used in electrical resistors has 45% nickel, and is called constantan. See related link.