Eighteen gold (18K gold)
High hardness, 6/24 copper and 18/24 gold alloy. Red and yellow. Can be used to make jewelry, decorations.
The current wire used is usually made of pure copper, and the most common use of copper is to make wires. This is because it is second only to silver in terms of electrical conductivity and thermal conductivity, but it is much cheaper than silver.
The important alloys of copper are the following: Copper can be used to make a variety of alloys.
brass
Named after the color yellow. Brass has good mechanical properties and wear resistance. Brass is an alloy of copper and zinc. Can be used to make precision instruments, parts of ships, shells of guns, etc. The brass sounded nicely, so the gongs, gongs, bells, and other instruments were made of brass.
Navigation Brass
Resistance to seawater erosion, copper and zinc, tin alloys. Can be used to make ship parts, balancers.
bronze
Named after the color green. Bronze generally has good corrosion resistance, wear resistance, castability, and excellent mechanical properties. It is used to manufacture precision bearings, high-pressure bearings, mechanical components resistant to seawater corrosion on ships, as well as various plates, pipes, rods, etc. Bronze also has an unusual characteristic - hot shrinkage, which is used to cast the statue, and the alloy of copper and tin is called bronze. After cooling, it can expand and make the eyebrow more clear.
Phosphor bronze
Hard, copper and tin, phosphorus alloys. Spring can be made.
Copper
Its color and silver, the white copper is an alloy of copper and nickel. Shiny silver, not easy to rust. Commonly used in the manufacture of electrical appliances, instruments and accessories
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