Aluminium, is a chemical element in the boron group with symbol Al and atomic number 13. It is a silvery-white, soft, nonmagnetic, ductile metal.
A 3006 (OTTO) Aluminium, shot approx. 4-8 mm (0.2-0.3 in), 99.999% - used non-ferrous metal. Aluminium is almost always alloyed, which markedly improves its mechanical properties, especially when tempered.