Electrical Conductivity of Common Materials

Electrical conductivity is a measure of a material’s ability to conduct electric current. On this page, you can find the electrical conductivity values for common materials in Siemens per meter (S/m) unit.

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)

Electrical Conductivity Values for Common Materials
Air1 ×10-15
Aluminum37.7 ×106
Annealed copper58 ×106
Beryllium31.3 ×106
Cadmium13.8 ×106
Calcium29.8 ×106
Carbon - amorphous1.25 ×103
Carbon - diamond1 ×10-13
Carbon - graphite (parallel to basal plane)2 ×105
Carbon - graphite (perpendicular to basal plane)3.3 ×102
Carbon steel (1010)6.99 ×106
Chromium7.74 ×106
Cobalt16 ×106
Constantan2.04 ×106
Copper59.6 ×106
Deionized water4.2 ×10-5
Drinking water0.0005 - 0.05
Fused quartz1.3 ×10-18
Gallium arsenide (GaAs)1 ×10-8
Galinstan3.46 ×106
Gallium7.1 ×106
Germanium2.17
Glass1 ×10-11
Gold41.1 ×106
Grain oriented electrical steel2.17 ×106
Hard rubber1 ×10-14
Indium11.6 ×106
Iridium19.7 ×106
Iron9.93 ×106
Lead4.55 ×106
Lithium10.8 ×106
Magnesium22.6 ×106
Manganese6.94 ×105
Manganin2.07 ×106
Mercury1.02 ×106
Molybdenum18.7 ×106
Nichrome6.7 ×105
Nickel14.3 ×106
Niobium6.93 ×106
Osmium10.9 ×106
Palladium9.5 ×106
PET1 ×10-21
Platinum9.43 ×106
Potassium13.9 ×106
Rhenium5.42 ×106
Rhodium21.1 ×106
Rubidium7.79 ×106
Ruthenium14.1 ×106
Sea water4.5 - 5.5
Silicon4.35 ×10-4
Silver63 ×106
Sodium21 ×106
Stainless steel1.45 ×106
Strontium7.62 ×106
Sulfur1 ×10-16
Swimming pool water0.25
Tantalum7.61 ×106
Technetium6.7 ×106
Teflon (PTFE)1 ×10-25
Thallium6.17 ×106
Thorium6.53 ×106
Tin9.17 ×106
Titanium2.38 ×106
Tungsten17.9 ×106
Wood - damp1 ×10-4
Wood - oven dry1 ×10-16
Zinc16.9 ×106

The electrical conductivity values in this table are approximate and can vary depending on factors such as temperature, pressure, and impurities in the materials.

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