Magnesium alloy is an alloy composed of magnesium as the base and other elements. Its characteristics are: low density (1.8g/cm3 magnesium alloy or so), high specific strength, specific modulus of elasticity, good heat dissipation, good shock absorption, the ability to withstand the impact load than the aluminum alloy, good corrosion resistance to organic matter and alkali. The main alloying elements are aluminum, zinc, manganese, cerium, thorium and a small amount of zirconium or cadmium. Currently the most widely used is magnesium aluminum alloy, followed by magnesium manganese alloy and magnesium zinc zirconium alloy. It is mainly used in aviation, aerospace, transportation, chemical, rocket and other industrial sectors. It is the lightest metal among practical metals, the specific gravity of magnesium is about 2/3 of aluminum and 1/4 of iron. it is the lightest metal among practical metals with high strength and rigidity.
Magnesium alloy civil is generally used for environmental protection building decorative panels, sports, medical equipment, tools, high-grade spectacle frames, watch cases, high-grade travel goods, jewelry, etc.