Copper belongs to the group of heavy nonferrous metals. Get it by processing ore and recycling of scrap copper. It is very plastic, forging. Electrical conductivity is the second place of honor after the silver. Due to this is used in pure form for the manufacture of wire, coils, electric terminals. However, pure copper mechanical characteristics inferior to its alloys. In order to increase protestee quality created by the two copper alloy: brass (Cu+Zn) and bronze (Cu+Sn).
|Physical quality Cu|
|Atomic (molar) mass, g/mol||63,548|
|The melting temperature t°C||1085°C|
|The degree of oxidation||3, 2, 1, 0|
|The thermal conductivity K [W/(m·K)]||401|
|Molar volume cm3/mol||7,1|
The price of copper are determined by a number of factors: global economic trends, domestic economies, proximity to the centres of processing. In fact, prices are indirect indicators of the stability of the economic sector in such fields as electronics, machinery, energetics, where copper found its applications as a raw material, as well as reflect the dynamics of development of the manufacturing industry. Course the price of copper determines stock exchange. But considering this question in private, you should consider the level of industrial consumption of non-ferrous metals, the presence of the regions natural resource, the development of extractive industries.
With the same success copper is used in electrical engineering, and as a roofing material, and in the manufacture of heating equipment and plumbing, and instrumentation. This metal with a unique combination of useful property, which finds wide application in all spheres of human activity. About seventy percent of the total amount of metal consumed for the production of electrical engineering. Fifteen percent is spent on building structural elements and 5% on parts for cars. 4% is on structures in the transport sector and in other industries, including the production of firearms.
Due to the fact that almost any property of a metal can be manipulated through the necessary additives, manufacturing of electrical products from different brands. If you want to achieve a high conductivity of electric current used additives of copper oxygen-free. In some cases, oxygen-brands (in the range from 0.02 for 0.04 per cent), although this option affects the machining processes welding. If you add arsenic in small quantities, it is possible to improve structural behavior. Brand with a lower oxygen content are more suitable for casting and used in the manufacture of pipes, wire, tubes, roofings, capacitors.
With regard to the range of products, which are copper alloys, it is very diverse: round, wire, strip; sheet; steel; tape; plate and more.
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