High strength cca wire can be used as inner conductor of CATV signal transmission cables and large capacity communication networks signal transmission cables instead of copper wire. The cca wire in its two states of annealed and hard-dram, the copper cladding covers only 10% to 15% of the wire cross setion.The maximum D.C reststivity is 0.02743 ohm and 0.02676 ohm per square millimeter per meter at 20 temperature respectively. The nominal density is 3.32 and 3.63 grams per cubic centimeter respectively with 0.03 tolerance. make the weigth of wire as low as 37% to 40% copper wire what allows the use if 2.5 to 2.7 length if cca instesd of copper wire if the same weight. Compered with copper wire ,cca wire has many advantages: light weight ,easy to transport and process, reduction of copper consumption ,low cost .