Aluminum is a chemical element. Its chemical symbol is al, and its atomic number is 13. Aluminum is the most abundant metal element in the crust, ranking third only to oxygen and silicon.

Aluminum is a metal element with the element symbol Al and atomic number 13. Its simple substance is a silver white light metal. It has ductility. Commodities are often made into rods, sheets, foils, powders, strips and filaments.