... % , we produce the aluminum wire , copper clad aluminu wire, copper clad steel wire for many year .yes ... CU 40% , volume Al 85% , weight AL 60 % specific density : 3.6% conductivity : 65 %IACS DC RESISTANCE ... strenght > 220mpa . volume Cu 12% , , volume STEEL 88% , specific density : 7.95% conductivity : 18 %IACS DC RESISTANCE , WELDING : ... DEGREE BENDING PROPERTY : >4 TIMES Copper Clad aluminum Wire