Metals are an important part of commercial and domestic applications. They are used to create the various parts and components that make up a machine. Among the many types non-ferrous or non-magnetic metals, aluminum is widely preferred and available for machineries and equipment. Its light weight coupled with superior strength makes it a better alternative. Metals are an important part of commercial and domestic applications. They are used to create the various parts and components that make up a machine. Among the many types non-ferrous or non-magnetic metals, aluminum is widely preferred and available for machineries and equipment. Its light weight coupled with superior strength makes it a better alternative.