The expanding use of magnesium in the automotive sector leads to an increasing quantity of scrap. The trend towards recycling of magnesium alloys is visible but so far post consumer scrap has not been used for magnesium alloy production. At the moment it is very complex to separate the magnesium post consumer scrap properly with regard to a chosen alloy. Therefore it is useful to define secondary magnesium alloys made out of blended magnesium based post consumer scrap. Due to the fact that most commercial magnesium alloys contain Al and Mn as alloying elements the AM alloy system was chosen as a base for a secondary magnesium alloy. Therefore AM50 has been modified with varying amounts of Ca, Si and Sr in the range of 0.2-2.0 wt. %. Microstructure, corrosion- and mechanical properties are investigated in the as-cast and T4 condition and possible applications are highlighted.