Aluminum(copper) Clad Steel Wire

Copper-clad steel (CCS), also known as copper-covered steel or the trademarked name Copperweld is a bi-metallic product, mainly used in the wire industry that combines the high mechanical resistance of steel with the conductivity and resistance to corrosion of copper.

It is mainly used for grounding purposes, drop wire of telephone cables,[1] and inner conductor of coaxial cables, including thin hookup cables like RG174, and CATV cable.

The first recorded attempt to make copper clad steel wire took place in the early 1860s, according to the Copper Clad Handbook, issued by the Duplex Metals Co., Chester, PA at the turn of the 20th century. Although for over 100 years people had been suggesting various ways of uniting copper and steel, it was not until the period mentioned that Farmer and Milliken tried wrapping a strip of copper about a steel wire. American engineers in 1883 and again in the 1890s made attempts to produce a copper-steel wire, in one instance at least, by electro-plating copper on steel.
Grounding, union of ground rods to metallic structures, meshes, substations, power installations and lightning arresters. Long term experience with the use for these purposes is available.