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Which of the following are the ingredients of gun metal?

  • A.Iron, zinc and titanium
  • B.Iron and tin
  • C.Iron, brass and tin
  • D.Copper, tin and zinc

Answer: D

Gun metal is an alloy of copper, tin and zinc - typically 88:10:2.

It was used for cannon because it is strong, easily cast and resists corrosion; it is now used for steam and hydraulic fittings for the same reasons.

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