... sink for led lamp heat sink aluminium heat sink Material:Aluminum 6061/6063 Anodized aluminium heat sink for led lampaluminium heat ... sink 1, Material aluminium alloy: 6061 /6063 T3-T8 Shapeaccording to drawing and sample (square, angle, flat, T-profile, rotundity, oval, ... ,painting , so on. 2, Typical chemical composition (GB/T3190) Aluminium GradeSiFeCuMnMgCrZnTiimpurityAl60630.2-0.6<0.35 <0.1 <0.1 ...