Below is a list of Magnesium Die Castings manufacturers from Seattle, Washington. Die castings made out of magnesium are very lightweight, strong and corrosion resistant. Magnesium is used when weight is a factor and a light, thin product is necessary. It is a non-ferrous metal that exhibits good soundproofing, thermal conductivity and corrosion resistance. It is easily alloyed with other metals and is considered nontoxic in its pure form.