Magnesium is the lightest construction metal. It is used primarily in aircraft construction and in the automotive industry. Its low density makes it excellent for casting, hardening and machining.
Negative aspects are its susceptibility to corrosion and flammability. Magnesium is difficult to form cold and weldability is considered problematic. Dangerous reactions are to be expected at higher temperatures, especially in the melt.
Therefore, special precautions must be taken during processing.