Metallurgy Basics

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Alloy

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A homogeneous combination of two or more metals or a metal and a nonmetal element.

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Alloy steels

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Steels that have elements, such as chromium, manganese, molybdenum, nickel, tungsten, and vanadium, added to them.

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Aluminum alloys

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Aluminum with other elements added (such as zinc, copper, and silicon) to produce certain characteristics.

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AA (Aluminum Association of the United States)

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An organization that sets standards for all aluminum alloy compositions and their designations.

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American Iron and Steel Institute (AISI)

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An organization that developed a system for classifying and designating ferrous metals.

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American Society for Testing and Materials (ASTM)

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An organization that developed a system for classifying and designating cast ferrous metals.

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Brass

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An alloy of copper and zinc that is stronger and more corrosion resistant than pure copper.

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Bronze

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An alloy primarily made of copper and tin.

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Cast iron

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Ferrous metal with carbon content between 1.7% and 4.5%, recognized by a rough scaly surface.

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Copper alloys

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Copper with additional elements added to produce desired material characteristics.