... Cu 15% , weight CU 40% , we produce the aluminum wire , copper clad aluminu wire, copper clad steel wire for many year . yes ,the cca and ccs can be ... . cca technology : elongation :> 15% , strenght > 220mpa . volume Cu 12% , , volume STEEL 88% , specific density : 7.95% conductivity : 18 %IACS DC RESISTANCE ...