Copper clad aluminum (CCA) wire is a bimetallic wire with a copper cladding concentrically covering an aluminum core, which combines th optimum properties of both metals in a single composite material ideally suited for most electrical conductor application. The processing method of CCA wire is similar to that of copper wire during  cable manufacture
Copper Clad Aluminum (CCA) wire is the substitute of copper wire in many fields. It can be used as inner conductor of various kinds of cables such as coaxial cable, network cable, data cable, microphone cable and so on .