Commercially pure aluminium varies from about 99,3% to 99,7% Al. The higher purity Aluminium is selected for use as electrical conductors and reflector sheets. Lower-purity alloys with iron an copper added as necessary is relatively soft and ductile with excellent workability and weldability

Aluminium is an important material in a large cross section of industries. It is suitable for forming, welding and machining and provides the following advantages:

Although available in a number of grades, Aluminium can be divided into two major categories of wrought alloys