Copper alloy with nickel as the main added element. Copper-nickel binary alloy called ordinary copper; plus manganese, iron, zinc, aluminum and other elements of copper alloy called complex copper. Industrial copper is divided into two categories: structural copper and electrical copper. Structural copper is characterized by good mechanical properties and corrosion resistance, and beautiful color. This kind of copper is widely used in the manufacture of precision machinery, glasses accessories, chemical machinery and ship components. Electrotechnical copper generally has good thermoelectric properties. Manganese copper, copper, copper is a different amount of manganese manganese white copper, is the manufacture of precision electrical instruments, varistors, precision resistors, strain gauges, thermocouples and other materials.
Brass
Brass is an alloy of copper and zinc. If only composed of copper, zinc brass is called ordinary brass. Brass is often used in the manufacture of valves, water pipes, air-conditioner connecting pipes and radiators.
If it is composed of more than two elements of a variety of alloys is called special brass. Such as by lead, tin, manganese, nickel, iron, silicon copper alloy. Special brass is also called special brass, which has high strength, hardness and chemical resistance. There are also cutting and machining mechanical properties are more prominent. Brass has strong wear resistance. The seamless copper tube drawn from brass is soft and has strong wear resistance. Seamless brass tubes can be used for heat exchangers and condensers, cryogenic piping, and undersea transportation tubes. Manufacture of sheet, bar, rod, tube, casting parts, etc.. Containing copper in 62% - 68%, strong plasticity, manufacturing pressure-resistant equipment and so on.
According to the different kinds of alloying elements contained in brass, brass is divided into ordinary brass and special brass. Brass for pressure processing is called deformed brass. Brass with zinc as the main added element of the copper alloy, has a beautiful yellow color, collectively known as brass. Copper-zinc binary alloys are called ordinary brass or simple brass. Brasses with more than three elements are called special brasses or complex brasses. Brass alloys containing less than 36% zinc are composed of solid solution, with good cold working properties, such as 30% zinc brass is commonly used in the production of cartridge cases, commonly known as cartridge cases brass or seven-three brass.
Brass containing 30% zinc is commonly used to make cartridge cases and is commonly known as cartridge brass or seventy-three brass. Brass alloys containing 36-42% zinc are composed of and solid solution, of which 40% zinc brass is commonly used. In order to improve the performance of ordinary brass, often add other elements, such as aluminum, nickel, manganese, tin, silicon, lead and so on. Aluminum can improve the strength, hardness and corrosion resistance of brass, but the plasticity is reduced, suitable for the sea vessel condenser tube and other corrosion-resistant parts. Tin can improve the strength of brass and corrosion resistance to seawater, so called naval brass, used as ship thermal equipment and propellers. Lead can improve the cutting performance of brass; this kind of free-cutting brass is often used for clock parts. Brass castings are often used to make valves and pipe fittings.
Bronze
Bronze is the earliest alloy used in China, with a history of more than 3,000 years.
Bronze originally refers to the copper-tin alloy, and then in addition to brass, copper alloys other than white copper are called bronze, and often in the name of bronze before the name of the main additive elements of the name. Tin bronze has good casting performance, good friction reduction performance and good mechanical properties, and is suitable for the manufacture of bearings, worm wheels and gears. Lead Bronze
Lead bronze is a widely used bearing material for modern engines and grinding machines. Aluminum bronze has high strength, good abrasion and corrosion resistance, and is used for casting high load gears, bushings, marine propellers and so on. Phosphor bronze has high elastic limit, good electrical conductivity, suitable for the manufacture of precision springs and electrical contact components, beryllium bronze is also used in the manufacture of coal mines, oil depots and other non-sparking tools. Beryllium copper is a supersaturated solid solution copper-based alloy, is the mechanical properties, physical properties, chemical properties and corrosion resistance is good; powder metallurgy production for tungsten steel, high carbon steel, high temperature resistant super-hard alloy molds need to be electro-etched, due to the ordinary electrode loss is large, slow, tungsten copper is a more ideal material. Flexural strength ≥ 667Mpa.
High-quality red copper with high purity, fine organization and very low oxygen content. No porosity, trachoma, loose, good electrical conductivity, suitable for electro-etching molds, heat treatment process, electrode non-directional, suitable for fine hitting, fine hitting.
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