I agree Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our website without changing the browser settings you grant us permission to store that information on your device.
Retaining its crystalline structure at temperatures up to its melting point, rhenium is gray to black in powder form, silvery-white and lustrous as a solid. It does not occur naturally. Rhenium has one of the highest densities, exceeded only by platinum, iridium, and osmium. Only tungsten has higher melting points. Rhenium has good wear resistance and it can withstand arc corrosion. Rhenium's range of valences exceed that of all other elements.
|Property Name||Property Value||Property Name||Property Value|
|Atomic Code||(75Re186.207)||Atomic Volume||8.85W/D|
|CAS #||7440-15-5||First Ionization Energy||182K-cal/g-mole|
|Melting Point||3180°C||Covalent Radius||1.28Angstroms|
|Boiling Point||5900°C||Linear Coefficient of Expansion||6.7x10-6K-1|
|Density||21.02g/cm3||Electrical Resistivity @ 20°C||19.3µΩ-cm|
|Themal Conductivity||0.17cal/cm2/cm/s/°C||Crystal Structure||Hexagonal|
|Specific Heat @ 25°C||0.033cal/g°C||Vapor Pressure @ 2000°C||3x10-8mm|
|Heat of Fusion||7.9k-cal/g-atom||Thermionic Work Function||4.8eV|
|Heat of Vaporization||152k-cal/g-atom||Modulus of Elasticity||67x106psi|