heat sink aluminium heat sinksize: 4 1/8"x 4 1/8"x 2"wall thickness:0.040"1)made aluminium profile ourself 2)Material:6063,6063A,6061,6005,6082 3)surface:andoized black,bronze et4)Quality: Gaurantee SGS,Bv Test,5)Standard: ISO19004, GB S2001-2009aluminium heat sink Aluminium alloy 6063 is a medium strength alloy commonly referred to as an architectural alloy. It is normally used in intricate ...