Magnesium lngots 99.90%-99.98% Mg 99.90%min , Si 0.025%max , Al 0.02%max , Fe 0. ... 04%max Cu 0.004%max 500g magnesium ... metal with purity 99 ... %, Mg Alloy(AM50A,AZ91D,AE42, etc.), Mg powder & Mg Casting, etc.The magnesium metal 99.9% is a fairly strong, silvery-white, light ...