General Characteristics

Aluminum is the 13th element in D. Mendeleev's Periodic Table, with an atomic weight of 27. In terms of chemical activity it is close to magnesium, with which it is side by side in the table. In terms of its content in the lithosphere (more than 8%), aluminum ranks first among metals. Of the 250 minerals that contain this metal, 40% are aluminosilicates. The main isotope, 27Al, is trivalent, containing 14 neutrons and 13 protons in the nucleus. Crystalline lattice is a face-centered cube. Aluminum is obtained by electrolysis of cryolite-alumina melt. In turn, alumina (_Al203) is obtained after processing of minerals containing aluminum.

Chemical properties

Aluminum actively combines with oxygen, sulfur, and carbon. Under normal conditions, in air, it is covered by a thin, micron-thin film of _Al203 oxide, which prevents oxidation and gives it high corrosion resistance. Molten aluminum reacts actively with CO,_CO2 and water vapor. Hydrogen absorbed by aluminum above the solubility limit makes the metal brittle. Aluminum is amphoteric: with acids it forms salts, and with alkalis it forms aluminates. This makes it much easier to extract aluminum from ores. The metal is readily soluble in alkali and inorganic acids, but nitric and organic acids are ineffective against it.

Applications

Aluminum is a light and convenient construction material, available for hot and cold working, well stamped, pressed, rolled, easily drilled and cut. It is an inexpensive and light material; when alloyed with magnesium, manganese, copper and other metals, it forms alloys with high specific strength, which is especially valuable in those industries where maintaining structural strength at low weight is important. Such structures are used for the needs of aircraft and automobile construction, machine and instrument engineering, food and construction industries. In particular, aluminum and magnesium alloys provide an invaluable advantage in developing new models of airplanes, helicopters and zeppelins, where they are used to produce parts for airframes, cowlings, ailerons, cockpit doors, landing gear, control levers, instrument casings and pumps, oxygen and fuel tanks. Such alloys are used to produce elements of supporting structures, automobile crankcases, pump and instrument casings, decorative elements, and tank covers. In the instrumentation and electronics industry, manufactured cases and parts of instruments, cameras, binoculars, cell phones, portable video cameras.

Buy, price

Evek GmbH sells semi-finished products made of aluminum and its alloys at the best price. It is formed taking into account the rates on the London Non-Ferrous Exchange and depends on the technological features of production, without the inclusion of additional costs. All batches of products have the certificate of quality for compliance with the requirements of standards and specifications of operation. The certificate includes the manufacturer, drawing number and name of the parts, alloy grade, melting number, mechanical properties of the parts, chemical composition and the results of additional tests. Orders are realized in the shortest possible time. Preferential discounts are offered to wholesale customers.