testo=<B>Magnesium</B><BR>The chieve use  for this alkaline earth metal is as an alloying agent to produce aluminium-magnesium alloys. It is a lightweighted metal with a silvery-white colour. It is mainly used as additive for aluminium alloys. Magnesium-aluminium alloys are primarily used for beverage cans. It is also applied in the chemical industry, agriculture and automobile industry.