The ability to combine aluminum with small amounts of other elements—silicon, magnesium, copper, zinc, and nickel—in various combinations, increases its strength and overall performance and has revolutionized the transportation industry. Many alloys harden with age and usually surpass the strength of steels. Because aluminum lends itself easily to many different applications, the combination of elements in an alloy is key to achieving the desired result. Alloys are specific to their function—some enhance casting and forming while others optimize the anodizing process.
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