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Magnesium alloys are being used in a broad variety of structural applications in the automotive, aerospace, electronics, and consumer products industries. While the growth of these applications has been driven primarily by weight savings, other advantages of magnesium alloys have played an important role. A major advantage is their unique suitability to the die casting process, allowing high rate production of near-net shape parts. Along with superior die life, this yields production cost savings that can more than offset the raw material cost advantage of competitive die cast aluminum alloys. Excellent machinability and superior damping properties are other important properties of these alloys. An outstanding feature of the new generation of magnesium alloys is their superior resistance to salt water corrosion.