Lead - physical properties
| Technical/ physical information: | |
|---|---|
| Chemical symbol: | Pb |
| Relative atomic mass: | 207,21 |
| Atomic number: | 82 |
| Crystal structure | Face-centred cubic |
| Edge length | |
| of the elementary cell: | 0.49389 mm |
| Melting point: | 326˚C-327˚C |
| Boiling point: | 1725˚C |
| Density at 20˚C | 11.336 kg/dm3 |
| Heat conductivity | |
| at 0˚C | 34.67 W/mK |
| at 100˚C | 33.83 W/mK |
| Specific electrical resistance | |
| at 20˚C | 20.65 µΩcm |
| Brinell Hardness Number | |
| HBS 1/1/30: | 3.3-4.7 |
| Vickers Hardness Number 1/30: | 3.3-4.7 |
| Fire behaviour: | |
| Non-flammable building material class A | |
The positive properties of lead at a glance:
- Soft (easy to fit and shape)
- Low melting point
- corrosion-resistant
- UV-resistant
- Conductive
- High density
- Stores energy
- Shielding
- Easy to recycle
- Long-lasting (even under extreme environmental conditions)
- High specific weight
- Ductile
- Impervious to gases and liquids
- Suitable for casting
Examples of applications - how this all-round material is used:
- Battery products (lead batteries for cars, lorries, buses, boats, building machinery, motorbikes, trains)
- Shock absorbers (automotive industry)
- Insulation and casing for electrical and special cables.
- Special lenses (optical glass)
- Solder
- Roofing
- Façade cladding
- Chimney flashing
- Seals
- X-ray films
- Insulation (radiation protection and soundproofing)
- Shielding
- Lead weights
- Lead stabilisers (building safety)
- Lead anodes
- Lead electrodes
- Flywheel ballast
- Lead wires, pipes, profiles
- and many more
