Low resistance alloys are used for applications where low to moderate electrical resistivity is required, as in various lead wires, for example. The numbers 30, 60, 90 and 180 designate the specific resistivities (ohm/cir mil ft) of the respective alloys of this family. This datasheet provides information on composition and physical properties. It also includes information on joining. Filing Code: Cu-546. Producer or source: Carpenter Technology Corporation.