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gunmetal
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Quick Facts
Also called:
G Metal
Related Topics:
bronze
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gunmetal

metallurgy
Also known as: G metal
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History

gunmetal, variety of bronze, formerly used for ordnance. Modern admiralty gunmetal is composed of 88 percent copper, 10 percent tin, and 2 percent zinc and is used for gears and bearings that are to be subjected to heavy loads and low speeds. It withstands atmospheric, steam, and seawater corrosion and is suitable for valves, pump parts, and steam fittings.