In siemens by square millimeter of corss-sectional area and meter of length.
| Material | S/mm2 x m (λ) |
| Aluminium | 34.2 |
| Antimony | 2.5 |
| Bismuth | 0.85 |
| Bronze | 14.9 |
| Cadmium | 13 |
| Cobalt | 10.4 |
| Constantan | 2 |
| Coper (hard) | 56.1 |
| Copper (pure) | 61.7 |
| Gold | 43.5 |
| Graphite | 0.07 |
| Iron (pure) | 10.2 |
| Lead | 4.8 |
| Mercury | 1.044 |
| Nickel | 9.09 |
| Nicrome | 0.909 |
| Silver | 62.5 |
| Steel | 8.6 |
| Tungsten | 18.18 |
| Zinc | 17.9 |
Note: in real applications the values can change slightly from the ones indicated in the table according the degree of purity or the composition of the material
