The addition of alloying elements can also be done through the metal in pellet form, the ALTABs.
These are a mixture of the main metal to be added, such as Fe, Mn, Cu, Cr, and Ti, compacted with a flux, which increases the yield and cleans the oxides. In general, Altabs exhibit lower metallic recovery than aluminum alloys. AMG also supplies other materials for adding elements to alloys, such as metallic Mg and metallic Si.