CCA is the abbreviation of Copper Claded Aluminum or Copper Coated Aluminum Wire, this wire adopts advanced coating and welding manufacturing technology to concentrically wrap high-quality copper tape on the outer surface of core wires such as aluminum rods or steel wires, and form a strong interatomic metallurgy between the copper layer and the core wire.  The two different metal materials are combined into an inseparable whole, which can be drawn and annealed like a single metal wire. During the drawing process, the diameter of copper and aluminum are reduced in the same proportion, and the volume ratio of the copper layer remains relatively constant.

Compared with CCA wires of the same weight and diameter, the length of CCA wires is about 2.4-3.1 times of pure copper wires, which will reduce material costs for manufacturers.

Since the weight of copper in 1 ton of  CCA wire is 268-368Kg, it can replace 2.4-3.1 tons of pure copper wire, so that the use of CCA  wire can save a lot of copper resources.