6061 aluminum plate was pre-stretching heat treatment process of high quality aluminum alloy products, its strength is not compared with 2 or 7 XXX XXX department system, but its more magnesium, silicon alloy properties, has the excellent processing performance, excellent welding characteristics and electroplating, good corrosion resistance, high toughness and processing after deformation, dense material without defects and easy polishing, coloring film easily, good features such as oxidation excellent results.