The purpose of the SPR project is to provide a reliable mechanical joining technology for Mg joint applications and to enable the success of mechanical fastening of Mg by assisting the Mg SPR process development and cycle time through rivet process simulation and experimentation. This will be achieved by providing actual SPR joint performance data of Mg/Mg and Mg/dissimilar metal joints, so that more accurate data is applied to the overall structural design, and by developing process windows to provide design recommendations/guidelines for effective Mg SPR joining.