he mechanical properties of magnesium die castings that are critical to the design of interior components are evaluated in three situations. First, the results of instrumented impact testing of the AM alloys, AZ91D and AE42 are reviewed. Second, creep properties of AZ91D and the AM alloys at a slightly elevated temperature, 50°C, are evaluated. Lastly, the effect of aging at 100°C on the AM alloys is reported. In all cases, the results are based on separately cast test bars.