Specifications

Atomic Number	75
Molecular Weight (g/mol.)	186.2
Apparent Density (g/cm3)	21.00 to 21.02
Electronegativity  (Pauling scale)	1.9
Specific Heat @25°C (cal/g-°C)	0.033
Melting Point (°C)	3157 to 3181
Boiling Point (°C)	5900
Thermal Conductivity (cal/s-cm°C)	0.095
Electrical Resistivity	18.7 to 20.0
Fracture Toughness	120 to 150
Poisson Ratio	0.3
Mohs hardness	7
Crystallography	hexagonal structure

Chemical Properties

99.9% - 99.99%

Physical Properties

3-6 mm pieces, slug, foil, wire, rod, 325 mesh by down powder

Typical Applications

Rhenium is used in platinum-rhenium catalysts which in turn are primarily used in making lead-free, high-octane gasoline and in high-temperature superalloys that are used to make jet engine parts. Other uses:
1) Widely used as filaments in mass spectrographs and in ion gauges.
2) An additive to tungsten and molybdenum-based alloys to increase ductility in these alloys.
3) An additive to tungsten in some x-ray sources.
4) Rhenium catalysts are very resistant to chemical poisoning, and so are used in certain kinds of hydrogenation reactions.
5) Electrical contact material due to its good wear resistance and ability to withstand arc corrosion.
6) Thermocouples containing alloys of rhenium and tungsten are used to measure temperatures up to 2200 °C.
7) Rhenium wire is used in photoflash lamps in photography.
8) Rhenium forms rhenium diboride with boron.
9) It is a compound noted for its extreme hardness.
10) Isotopes of rhenium are radioactive. The 188 isotope, with a half-life of 69 days, has been tested for treatment of liver cancer. The 188 isotope may be obtained in the form of a generator.
11) Related by periodic trends, rhenium has a similar chemistry with technetium; work done to label rhenium onto target compounds can often be translated to technetium. This is useful for radiopharmacy, where it is difficult to work with technetium - especially the 99m isotope used in medicine - due to its expense and short half-life.
12) For use in booster rocket engines

Packaging

Usually to customer specification