What is the properties of gun metal?

About Gun Metal

Gun metal is widely used in industries and manufacturing tools.
  • It is an alloy of copper, tin and zinc. It usually contains 88% copper, 10% tin and 2% zinc.
  • This metal is also known as Admiralty gun metal. 
  • The zinc is added to clean the metal and to increase its fluidity. 
  • It is not suitable for being worked in the cold state but may be forged when at about 600°C. 
  • The metal is very strong and resistant to corrosion by water and atmosphere. 
  • Originally, it was made for casting guns. It is extensively used for casting boiler fittings, bushes, bearings, glands, etc.