Correct Answer - Option 2 : Cu + Sn + Zn
Gunmetal, also known as red brass, is a type of bronze an alloy of copper, tin, and zinc. Proportions vary by source, but 88% copper, 8-10% tin, and 2-4% zinc is an approximation.
- It was used mainly for making guns and bullets. Now it is superseded by Steel.
- Gunmetal is used extensively for making heavy machinery parts as it can withstand high pressure and is corrosion resistant.
Alloy |
Metals |
Brass |
Copper, Zinc (Cu + Zn) |
Bronze |
Copper, Tin (Cu + Sn) |
Steel |
Iron, Carbon (Fe + C) |
Invar |
Iron, Nickel (Fe + Ni) |
Electrum |
Gold, Silver (Au + Ag) |
Nickel silver |
Copper, Zinc, Nickel (Cu + Zn + Ni) |
Gun Metal |
Copper, Tin, Zinc (Cu + Sn + Zn) |
Fuse Wire |
Lead, Tin (Pb + Sn) |
Alnico |
Aluminium, Nickel, Cobalt, Iron (Al + Ni + Co) |
Type metal |
Lead, tin and antimony (Pb + Sn + Sb) |
Solder |
Tin, lead (Sn + Pb) |
Magnalium |
Aluminium, Magnesium (Al + Mg) |