2017 aluminum plate was the first 2 to achieve industrial application ××× It is an alloy with high strength and good cutting performance, but poor corrosion resistance. two ××× The characteristic of the series of aluminum plates is their high hardness, with the highest content of copper, approximately 3-5%. two ××× The series of aluminum plates belong to aviation aluminum materials and are not commonly used in conventional industries. Production in China 2 ××× There are few manufacturers of series aluminum plates. The quality cannot be compared with foreign countries. The imported aluminum plates are mainly provided by Korean and German production enterprises. With the development of China’s aerospace industry ××× The production technology of the series of aluminum plates will be further improved.