The “3mm” of a 3mm brushed aluminium plate refers to the thickness of the plate. This number is relatively big for most brushed aluminium plates are only around 1mm thick. Alloys of the plate cover 1050, 1060, 1100, 3003, 3004, 2014, 2024, 5052, 6061 and 7005, but the most frequently applied are 1xxx, 3xxx and 5xxx series. The color of …