From high-speed rail carriages to ships, from military to civilian use, the use of aluminum alloys is constantly increasing. Every time the weight of a spacecraft entering space orbit is reduced by 1 kilogram, its launch cost will be saved by more than 100,000 yuan.
Energy saving and weight reduction are calculated in grams in the aerospace field. The aerospace field has become an important application market for aluminum alloy materials. Automotive engines, wheels, car bodies, high-speed rail bodies, mechanical equipment and electrical equipment, as well as daily necessities, all use aluminum alloys. to achieve lightweight requirements.
In ancient times, humans began to use aluminum-containing clay to make pottery. However, due to the weak oxidizing properties of aluminum, it is difficult to extract it. Therefore, its reserves on the earth are greater than other metals, but its use is obviously less than that of copper. Metals such as iron came much later.