... 85% , weight AL 60 % specific density : 3.6% conductivity : 65 %IACS DC RESISTANCE ,SOLDERING , WINDALIBILITY .cca technology : elongation :> 15% , strenght > 220mpa ... 12% , , volume STEEL 88% , specific density : 7.95% conductivity : 18 %IACS DC RESISTANCE , WELDING : >10 S 90 DEGREE BENDING PROPERTY : >4 ...