Stack, ingot rhenium, stamps
Technical Characteristics
Rhenium is one of the heaviest and refractory metals of the rare earth group. Its melting point is second only to tungsten, by strength it ranks 4th after osmium, platinum and iridium. Pure rhenium is ductile under normal conditions. However, due to its high modulus of elasticity, its hardness increases after processing due to accretion. Its specific electrical resistance is greater than that of tungsten and molybdenum.
| Parameters | Value |
|---|---|
| Atomic (molar) mass g/mol | 186,2 |
| Oxidation states | 7, 6, 5, 4, 3, 2, -1 |
| Specific gravity [g/cm3] | 21,02 |
| Melting point t ° C | 3186°С |
| Melt heat kJ/mol | 34 |
| Thermal conductivity K [W/(m-K) | 48 |
| Heat of vaporization kJ/mol | 704 |
Production
Rhenium is contained in copper sulfide and molybdenum ores. The raw material is processed by the pyrometallurgical method. Boiling rhenium is sublimed as oxides, which are trapped in gas and dust collection systems. During roasting of concentrates and incomplete sublimation, part of the metal is retained in the cinder, from which it is extracted using ammonia and soda solutions by leaching.
The use of
Rhenium alloys are used to manufacture pendants for theodolites, levels, gyrotheodolites, grids, filaments, heater cathodes for electron-beam tubes, in thermionic generators, generator and receiver-amplifier lamps - filaments of ion gauges and mass spectrometers. For the highest temperatures (around 2500°C), thermocouples made of W+ Re alloys are used.
Furnizor
Supplier Evek GmbH offers to buy any grades of rhenium, stack, ingot, the price is optimal in this segment of rolled products. Full compliance with international quality standards. The supplier Evek GmbH offers to buy any grades of rhenium, stack, ingot from specialized warehouses of Evek GmbH with delivery in any city.
Buy, bargain price
We offer any grades of rhenium, bar, ingot, the price is determined by the technological features of production without including additional costs. It is possible to order products of non-standard parameters. We have the best price-quality ratio. Evek GmbH company - a profitable supplier. Buy any grades of rhenium, stack, ingot today. Timely delivery is provided by representative offices in Eastern European cities.