| Isolant | Permittivity relative εr |
Vp [106m/s] or [mm/ns] |
Resistivity [ohm.mm] |
Loss tangent |
|---|---|---|---|---|
| air | 1.0005 | 300 | ||
| téflon ou PolyTétraFluoroEthylène (PTFE) | 2.0 - 2.1 (@1MHz) | 212 | 101.8 à 101.9 | |
| Paraffin wax | 2.2 | |||
| Paper | 2 - 4 | |||
| Oil | 2.3 | |||
| Polyethylene | 2.3 | |||
| Rubber | 2.3 - 4.0 | |||
| Polystyrene | 2.6 | 186 | ||
| Soil | 3 - 4 | |||
| Plexiglas | 3.4 | |||
| Epoxy resin | 3.6 | |||
| Mylar | 4 | 150 | ||
| SiO2 | 4 | 150 | ||
| FR-4 (ED 130, EM 145, G 50) | 4.3 | 0.02 | ||
| FR-4 PCL-FR-204 | 4.6 | 0.2 | ||
| Glass | 4-10 | |||
| Backelite | 4.9 - 5.0 | |||
| Porcelain | 5.7 - 6.0 | |||
| Mica | 6.0 | 122 | ||
| Neoprene | 6.7 | |||
| Polyurethane | 7.0 | |||
| alumine | 10 | 95 | ||
| Silicon | 12.0 | 86 | ||
| eau | 80 | 34 |
| Material | Relative magnetic perméability µr |
Type of magnetism ferromagnetic: µr>>1  Paramagnetic: µr>1  Diamagnetic: µr<1 
|
Electric Conductivity σ (S/m) à 25°C |
Resistivity ρ (ohm/mm) à 25°C |
|---|---|---|---|---|
| Mumetal | 100 000 | |
||
| Iron | 4 000 - 10 000 | |
107 | |
| Bronze | 107 | |||
| Nickel | 600 | |
7.0 10-5 | |
| Cobalt | 250 | |
||
| Palladium | 1.00082 | |
||
| Aluminium | 1.000021 | |
3.54 107 | 2.7 10-5 |
| Titanium | 1.00018 | |
||
| Magnesium | 1.000012 | |
||
| vide | 1 |  |
||
| Copper | 0.99999 | |
58.14 106 | 17.2 10-9 |
| Bismuth | 0.99983 | |
||
| Gold | 0.99996 | |
4.10 107 | 2.2 10-5 |
| Silver | 0.99998 | |
6.17 107 | 1.6 10-5 |
| l'air | <1 | |
||
| les gaz | <1 | |
||
| la terre | <1 | |