Properties of Tungsten (W)
Tungsten is a chemical element with the symbol (W) and atomic number 74. It is a dense, hard, and steel-gray metal with the highest melting point of any element. Tungsten has excellent heat and electrical conductivity properties, making it valuable in various industrial applications.
The following table provides a comprehensive list of tungsten (W) properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP).
Click on the button to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Crystal Structure | Body-centered cubic (bcc) |
| Atomic Number | 74 |
| Molar Mass | 183.84 g/mol |
| Density | 19300 kg/m3 |
| Mechanical Properties | Metric |
| Young’s Modulus (E) | 411 GPa |
| Shear Modulus (G) | 160.6 GPa |
| Bulk Modulus (K) | 311 GPa |
| Poisson’s Ratio (ν) | 0.28 |
| Mohs Hardness | 7.5 |
| Thermal Properties | Metric |
| Melting Point | 3414 °C |
| Boiling Point | 5656 °C |
| Thermal Conductivity (27°C) | 174 W/m·K |
| Specific Heat Capacity (Cp) (25°C) | 132 J/kg·K |
| Coefficient of Thermal Expansion (αL) (25°C) | 4.5×10-6 1/°C |
| Electrical Properties | Metric |
| Electrical Resistivity | 5.39×10-6 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)
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.