Mold aluminum plate is light in weight, good corrosion resistance and good oxidation resistance. Because its density is only 36% of the ordinary die steel, its cutting speed is more than 6 times faster than that of the ordinary die steel. It is easy to add and reduce the speed in the production process, and can reduce the loss of the machine and mould. With good mechanical and wear resistance, the dimension stability of the die aluminum plate is higher in machine processing, and the die processing time can be saved a lot, so that the mould can be put into production faster.