The most common use of copper is in making electric wires. Most electric wires used today are made of pure copper, which is second only to silver for conducting electricity and heat, but much cheaper. And copper is easy to work. By melting, casting, rolling and
other processes to change shape, can be made into car parts and electronic parts. These processed copper products, collectively
referred to as "stretch copper products".
And copper can be used to make a variety of alloys, copper important alloys are the following:
1, 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, faucets and so on. Brass sounds good when struck, so
gongs, cymbals, bells, trumpets and other Musical Instruments are made of brass.
2. Marine Brass
An alloy of copper with zinc and tin, resistant to sea water, used for ship parts and balancers.
3, 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 ability and excellent mechanical properties,
and high hardness. 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.
4. Phosphor Bronze
Phosphor bronze is an alloy of copper, tin and phosphorus, containing 2%-8% tin, 2-8% phosphorus, the rest of the composition is
copper. Hard, springs can be made. Casting can be used for gear, worm gear, bearing and other mechanical parts.
5, Cupronickel
White copper is copper and nickel alloy, its color and silver, silver shine, not easy to rust. It is often used to make coins,
electrical appliances, meters and ornaments.
6. 18-Carat Gold (18K gold or rose gold)
An alloy of 6/24 copper and 18/24 gold. Red and yellow, hard, can be used to make jewelry, ornaments.