Properties of Lead (Pb)
Lead is a chemical element with the symbol (Pb) and atomic number 82. It is a heavy metal known for its malleability, corrosion resistance, and dense properties. Lead has been widely used throughout history in various applications, including plumbing, construction, and batteries. However, due to its toxic nature, lead exposure can have serious health effects, particularly on the nervous system, and efforts have been made to reduce its use in many products and industries.
The following table provides a comprehensive list of lead (Pb) 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 | Face-centered cubic (fcc) |
| Atomic Number | 82 |
| Molar Mass | 207.2 g/mol |
| Density | 11350 kg/m3 |
| Mechanical Properties | Metric |
| Young’s Modulus (E) | 16.1 GPa |
| Shear Modulus (G) | 5.59 GPa |
| Bulk Modulus (K) | 45.8 GPa |
| Poisson’s Ratio (ν) | 0.44 |
| Mohs Hardness | 1.5 |
| Thermal Properties | Metric |
| Melting Point | 327.46 °C |
| Boiling Point | 1749 °C |
| Thermal Conductivity (27°C) | 35.3 W/m·K |
| Specific Heat Capacity (Cp) (25°C) | 130 J/kg·K |
| Coefficient of Thermal Expansion (αL) (25°C) | 2.89×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Resistivity | 2.08×10-5 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)