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gunmetal
metallurgy
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Also known as: G metal
Written and fact-checked by The Editors of Encyclopaedia Britannica
- Also called:
- G Metal
- Related Topics:
- bronze
gunmetal, variety ofbronze, formerly used for ordnance. Modern admiralty gunmetal is composed of 88 percentcopper, 10 percenttin, and 2 percentzinc and is used for gears andbearings that are to be subjected to heavy loads and low speeds. It withstands atmospheric,steam, andseawater corrosion and is suitable for valves, pump parts, and steam fittings.