... % , weight CU 40% , we produce the aluminum wire , copper clad aluminu wire, copper clad steel wire for many year . yes ,the cca and ... 60 % specific density : 3.6% conductivity : 65 %IACS DC RESISTANCE ,SOLDERING , WINDALIBILITY . cca technology : elongation :> 15% , strenght > 220mpa . volume Cu 12 ...