Something that’s commonly seen in wiring since the 1970s is copper-clad aluminium (CCA) wire. This is basically what the name says: an aluminium core that is clad in copper, making it a bimetal.
[Ken] boils down his process of building enclosures out of copper clad (PDF) circuit board material ... Next, he uses some 20 gauge wire as a shim between a ninety-degree joint and a right angle ...
Premium pure copper 14-Gauge speaker wire with 245 fine strands per conductor. Compared to copper-clad-aluminum wire, pure copper wire has 30% lower resistance, better flexibility, and greater ...
Anomet Composite Clad Metal Wire and Strip feature gold, silver, palladium, platinum, and nickel alloys that are metallurgically bonded to cores made of copper, nitinol, platinum, stainless ...