... .Extrusion,drill,cnc,sandblasting+anodized 3.Material:6063 machined heatsink Aluminium alloy composition profileAlloySiMgFeCuMnZn60630.2-0.6045-0.9<0.35<0 ... ,6005,6N01TemperT3 to T8productionprocessingmake mould -casting for aluminium ingot-extrusion -treatment for hardness resistance-aluminium finish machining -surface treatment-packageMachining categorycutting-drilling ...