Properties of Uranium (U)
Uranium is a chemical element with the symbol (U) and atomic number 92. It is a heavy metal that occurs naturally in low concentrations in the Earth’s crust. Uranium is notable for its use as a fuel in nuclear reactors and for its role in the production of nuclear weapons.
The following table provides a comprehensive list of uranium (U) properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP).
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Crystal Structure | Orthorhombic |
| Atomic Number | 92 |
| Molar Mass | 238.0289 g/mol |
| Density | 19100 kg/m3 |
| Mechanical Properties | Metric |
| Young’s Modulus (E) | 177 GPa |
| Shear Modulus (G) | 70.6 GPa |
| Bulk Modulus (K) | 97.9 GPa |
| Poisson’s Ratio (ν) | 0.25 |
| Thermal Properties | Metric |
| Melting Point | 1132 °C |
| Boiling Point | 4131 °C |
| Thermal Conductivity (27°C) | 27.6 W/m·K |
| Specific Heat Capacity (Cp) (25°C) | 116 J/kg·K |
| Coefficient of Thermal Expansion (αL) (25°C) | 1.39×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Resistivity | 2.8×10-5 Ω·cm |
Unless stated otherwise, all values are taken at room temperature (approximately 20°C or 68°F) and 1 atm pressure. (1 atm = 101,325 Pa)
Related Pages
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017. 3) A.M. Howatson, P.G. Lun, J.D. Todd, P.D. Engineering Tables and Data. United Kingdom: University of Oxford, Department of Engineering Science, 2009.