What is precious brass

Expansion: Copper is divided into several kinds, which is the most expensive?

It can be divided into the following five categories. White copper is relatively expensive.

A, brass: brass is an alloy of copper and zinc, named for its yellow color. Brass has good mechanical properties and wear resistance, and can be used to manufacture precision instruments, ship parts, gun casings and so on. Brass sounds good when struck, so gongs, cymbals, bells, trumpets and other Musical Instruments are made of brass.

Two, Marine brass: copper and zinc, tin alloy, seawater erosion resistance, can be used to make ship parts, balancer.

Bronze: the alloy of copper and tin is called bronze, named for its green color. It was a common alloy in ancient times (e.g., China's Bronze Age). Bronze generally has good corrosion resistance, wear resistance, casting and excellent mechanical properties. Used for manufacturing precision bearings, high pressure bearings, seawater corrosion resistant mechanical parts on ships and various plates, pipes, bars and so on. Bronze also has the unusual property of "thermal shrinkage and cold expansion", which is used to cast statues that expand when cooled to make the features clearer.

Phosphor bronze: copper, tin, phosphorus alloy, hard, can be made of spring.

Five, white copper: white copper is copper and nickel alloy, its color and silver, silver shining, not easy to grow _. It is often used to make coins, electrical appliances, meters and ornaments.

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