Gunmetal also known as red brass. It is a type of bronze – an alloy of copper, tin, and zinc. Proportions vary but 88% copper, 8–10% tin, and 2–4% zinc is an approximation. Originally used chiefly for making guns, it has largely been replaced by steel.
Gunmetal Cast, offering excellent machinability, excellent wear resistance at normal lubrication, high resistance to seizure and good corrosion resistance. It is majorly steam and hydraulic castings, valves, gears, statues, and various small objects, such as buttons.
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