Gunmetal
(not made for guns anymore)
what is gun metal made of
how was gunmetal discoverd
No-one knows when the first metal was found and used. It was probably what is called native copper, which is sometimes found in large lumps on the ground. http://www.chacha.com/question/how-was-gunmetal-discovered
physical properties of gunmetal
gunmetal casts and machines well.
gunmetal is corrosion resistant to steam and salt water.
and is suitable for valves, pump parts, and steam fittings.http://www.britannica.com/technology/gunmetal
what is gunmetal used for?
gunmetal is used for valves,pump parts, and steam fittings due to its anti corrosive resistances
what chemical properties does gunmea have?
gunmetal has a anti corrosion property about it, so it is perfect to work with saltwater and steam.