| Quantity | Value | Units | Value | Units |
| <Z/A> | 0.50321 | |||
| Density | 0.820 | g cm-3 | ||
| Mean excitation energy | 36.5 | eV | ||
| Minimum ionization | 1.897 | MeV g-1cm2 | 1.555 | MeV cm-1 |
| Nuclear collision length | 50.8 | g cm-2 | 61.91 | cm |
| Nuclear interaction length | 68.1 | g cm-2 | 83.09 | cm |
| Pion collision length | 77.9 | g cm-2 | 95.02 | cm |
| Pion interaction length | 99.6 | g cm-2 | 121.5 | cm |
| Radiation length | 79.62 | g cm-2 | 97.10 | cm |
| Critical energy | 163.94 | MeV (for e-) | 159.75 | MeV (for e+) |
| Molière radius | 10.30 | g cm-2 | 12.56 | cm |
Plasma energy ![]() |
18.51 | eV | ||
| Muon critical energy | 1763. | GeV | ||
| Melting point | 273.2 | K | 6.920E-04 | C |
| Elem | Z | Atomic frac* | Mass frac* |
| 1 | |||
| 3 | |||
| * calculated from mass fraction data. | |||