Electrical Conductivity of Common Dielectric Materials
Dielectric materials are typically insulators that do not conduct electricity easily. Unlike conductors, which allow the free flow of electric charge, dielectrics are characterized by high electrical resistance.
The following table provides a curated list of electrical conductivity values for common dielectric materials in Siemens per meter (S/m) units.
Unless stated otherwise, all values are taken at standard room temperature (approximately 20°C or 68°F) and 1 atmospheric (atm) pressure. (1 atm = 101,325 Pa)
| Alumina (90 wt% Al2O3) | Ceramic | 10-14 |
| Alumina (96 wt% Al2O3) | Ceramic | 10-14 |
| Alumina (99.5 wt% Al2O3) | Ceramic | 10-15 |
| Alumina (99.9 wt% Al2O3) | Ceramic | 10-14 |
| Alumina (99.99 wt% Al2O3) | Ceramic | 10-15 |
| Alumina porcelain | Ceramic | 10-14 |
| Bakelite (phenol formaldehyde resin) | Polymer | 10-15 |
| Cellulose acetate | Thermoplastic | 10-13 |
| Cellulose triacetate | Thermoplastic | 10-15 |
| Cordierite (Mg2Al4Si5O18) | Mineral | 10-14 |
| Corning® 0010 | Glass | 10-17 |
| Corning® 0080 | Glass | 10-12 |
| Corning® 0120 | Glass | 10-17 |
| Ebonite | Polymer | 10-15 |
| Fluoroelastomer | Elastomer | 10-17 |
| Forsterite (Mg2SiO4) | Mineral | 10-13 |
| Macor® | Glass | 10-16 |
| Marble (CaCO3) | Rock | 10-10 - 10-8 |
| Mica, muscovite type (KAl2(Si3Al)O10(OH,F)2) | Mineral | 10-13 - 10-11 |
| Mica, phlogopite type (KMg3AlSi3O10(F,OH)2) | Mineral | 10-15 - 10-12 |
| Mullite (Al6Si2O13) | Ceramic | 10-13 |
| Ozocerite (natural paraffins) | Mineraloid | 10-14 |
| Polyester | Thermoplastic | 10-18 |
| Polyethylene | Thermoplastic | 10-16 |
| Polyimide | Thermoplastic | 10-18 |
| Polypropylene | Thermoplastic | 10-16 |
| Polytetrafluoroethylene | Thermoplastic | 10-18 |
| Polytrifluorochloroethylene | Thermoplastic | 10-18 |
| Polyurethane | Thermoset | 10-11 |
| Polyvinyl chloride | Thermoplastic | 10-14 |
| Polyvinyl fluoride | Thermoplastic | 10-13 |
| Polyvinylidene chloride | Thermoplastic | 10-16 |
| Polyvinylidene fluoride | Thermoplastic | 10-14 |
| Rutile (TiO2) | Mineral | 10-14 |
| Silicon dioxide (SiO2) | Ceramic | 10-17 - 10-14 |
| Silicon nitride (Si3N4) | Ceramic | 10-14 |
| Soapstone | Mineral | 10-13 |
| Steatite (talc) | Ceramic | 10-13 |
| Vycor® (96 wt% SiO2, 3 wt% B2O3) | Glass | 10-16 |
| Zirconium oxide (ZrO2) | Ceramic | 10-15 |
Related Tables
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017.