Friction Stir Welding. Process developed for joining aluminum alloys and other materials, as copper and steels. It is possible to join same materials and also dissimilar metals including steel to aluminum. Fast weld even for thickness up to 40 mm in just one pass. Butt, corner joint and other configurations. No deformation after welding. Mechanical properties as joined base metal. It is possible to weld even aluminum alloys series 2xxx or 7xxx that are not possible to weld using tradicional processes.