Aluminum Alloys Aluminum Alloys (or aluminum alloys; see spelling differences) are alloys in which aluminium (Al) is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon, tin and zinc. The alloys are widely used in engineering structures and components where light weight or corrosion resistance is required. Alloys composed mostly of aluminium have been very important in aerospace manufacturing since the introduction of metal-skinned aircraft. Examples of its applications include electronics, storage tanks, pressure vessels, and aluminum beverage can lids. The offered Aluminum Alloys are made for use in various industries and commercial purposes. They are very strong and durable.