Non-ferrous metals and alloys
Modern technical progress goes hand in hand with the achievements of nonferrous metallurgy. Without non-ferrous alloys it is impossible to imagine a modern industry. Today, the use in industry of non-ferrous metals is expanding every day. Thanks to the excellent technical properties regarding corrosion resistance, heat resistance, heat resistance, heat and electrical conductivity, ductility, strength, hardness they are used as basic material for the most complex and important structures in knowledge-intensive industries such as:
Bronze is an alloy based on copper, in which the main alloying ingredient is tin — serves humanity many thousands of years… In the composition there are additives of aluminum, beryllium or other elements such as phosphorus, aluminium, zinc, lead. With the exception of the be alloy of copper and zinc (in this case brass) and alloy of copper and Nickel. The copper alloy without tin: one of the most popular of aluminum bronze, as well as (Cu-Zn) and brass (Cu-Ni) Constantan, but they are not bronze.
Heat-resistant alloy of Nickel and chromium called nichrome. Brand nichrome H15N60, CR20NI80 indispensable in modern electrical engineering. The most popular composition of 80% Ni — CR20NI80, which until recently was the most heat-resistant materials. To reduce the cost of nichrome — a high percentage of Ni was decreased by increasing the proportion of iron. The most successful was the composition of 15% Cr, 60% Ni and 25% Fe. Ferrochrome cheaper than nichrome, and is usually applied at a lower temperature. Ferrochrome and nichrome possess a rare combination of high electrical resistance (1.05 and 1.40 Omhm2/m) and high heat resistance. So they, along with chromosme represent two of the most important class of alloys used in the form of tape or wire for the manufacture of high temperature electric heaters. For those are usually used nichrome, doped to 1.5% silicon, rare-earth, alkaline-earth metals. The maximum operating temperature of Narumov of this type is approaching 1200 °C, and the number of brands to 1250 °C.
Aluminium is 3 times lighter than steel. It is corrosion resistant, perfectly stamped, cut, drilled, has high conductivity and is not toxic. It is used in food industry for the manufacture of foil, kitchen ware, different packages. Probably the only drawbacks of aluminum is low strength. To increase the strength, it is alloyed with magnesium and copper.
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