The rod billet, ingot rhenium, brand
Rhenium is one of the most difficult and refractory metals, rare earth group. The melting point, it is second only to tungsten, strength takes the 4th place after osmium, platinum and iridium. Pure rhenium in normal conditions plastic. However, due to the high modulus of elasticity, its hardness after processing is increased due to work hardening. Its electrical resistivity higher than tungsten and molybdenum.
|Atomic (molar) mass, g/mol||186,2|
|Oxidation||7, 6, 5, 4, 3, 2, -1|
|Specific gravity [g/cm3]||21,02|
|The melting temperature t°C||3186°C|
|The heat of fusion kJ/mol||34|
|The thermal conductivity K [W/(m·K)]||48|
|Heat of evaporation kJ/mol||704|
Rhenium is contained in a copper sulfide and molybdenum ores. The raw material is processed by pyrometallurgical method. Boiling rhenium sublimates in the form of oxides, which are trapped in gas and dust removal systems. During roasting of concentrates and partial sublimation, the metal part is retained in the calcine from which to extract ammonia, soda solution leaching.
Of rhenium alloys produced suspensions of theodolites, levels, gyrotheodolite, nets, filaments, heaters cathodes for cathode ray tubes; thermionic generators, the generator and the receiving-intensifying lamps — filament ion gauges and mass spectrometers. With the aim of measuring the high temperatures (about 2500°C) used thermocouple alloys W+ Re.
Supplier Evek GmbH offers to buy any brand of rhenium, rod billet, ingot, the price is optimal in this segment of the rental. Full compliance with the international quality standards. Supplier Evek GmbH offers to buy any brand of rhenium, rod billet, ingot with specialized warehouses Evek GmbH with delivery to any city.
To buy, best price
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