Aluminum sheet 6061 has excellent machinability, good corrosion resistance, high toughness, no deformation after processing, easy coloring film, excellent oxidation effect and other excellent characteristics. It belongs to Al-Mg-Si series alloy, with medium strength, good plasticity and excellent corrosion resistance. Among the aluminum sheet 6061 alloys, the aluminum alloy is 97.9%, the magnesium is 1%, the silicon is 0.6%, the copper is 0.28% and the chromium is 0.2%.