It typically consists of copper, tin, and zinc, offering excellent corrosion resistance, strength, and machinability. Due to its durability and ability to withstand friction, gun metal is widely used in engineering applications, especially where wear resistance is required. 

Gun metal is usually composed of 88% copper, 10% tin, and 2% zinc, with variations depending on the specific application. The addition of tin improves the metal's strength and resistance to corrosion, while zinc enhances its castability and fluidity during the manufacturing process. This alloy is easy to cast, highly durable, and has a smooth surface finish, making it suitable for a wide range of uses.

Characteristics of Gun Metal:

• Corrosion Resistance: Gun metal resists corrosion in marine and industrial environments, making it ideal for parts exposed to harsh conditions.
• High Strength: The alloy provides strength and toughness, making it capable of handling mechanical stresses.
• Machinability: It is easily machinable, allowing for precision manufacturing of components.