Elemental magnesium is a fairly strong, silvery white, light-weight metal. It tarnishes slightly in air, and is thus protected against further oxidation by a thin impermeable layer of oxide.

Primarily used to inert-gas-arc weld base metals of similar composition requiring joints with strength, corrosion and heat resistance comparable to those of the base metal. [See More] ...

Gas tungsten arc welding was developed by Russell Meredith at Northrop Aviation in the early 1940s and came into widespread use during WWII with the need to replace riveting for aluminum and magnesium ...