Electrical Resistivity and Conductivity

The following table shows electrical resistivity, conductivity, and the temperature coefficient for the materials listed.

See the lesson on electrical properties of materials for more detailed information about resistivity and conductivity.

Resistivity is sorted from lowest resistivity to highest resistivity:

MaterialResistivity (at 20°C)Conductivity (at 20°C)Temperature Coefficient
Silver1.59 * 10-86.30 * 1070.00380
Copper1.68 * 10-85.96 * 1070.00404
Annealed Copper1.72 * 10-85.80 * 1070.00393
Gold2.44 * 10-84.11 * 1070.00340
Aluminum / Aluminium2.65 * 10-83.77 * 1070.00390
Calcium3.36 * 10-82.98×1070.00410
Tungsten5.60×10−81.79×1070.00450
Zinc5.90×10−81.69×1070.00370
Cobalt6.24×10−81.60×107–
Nickel6.99×10−81.43×1070.006
Ruthenium7.10×10−81.41×107–
Lithium9.28×10−81.08×1070.006
Iron9.70×10−81070.005
Platinum1.06×10−79.43×1060.00392
Tin1.09×10−79.17×1060.00450
Niobium1.40×10−77.00×106–
Gallium1.40×10−77.10×1060.004
Carbon steel1.43×10−76.99×106–
Lead2.20×10−74.55×1060.0039
Titanium4.20×10−72.38×1060.0038
Grain Oriented electrical steel4.60×10−72.17×106
Manganin4.82×10−72.07×1060.000002
Constantan4.90×10−72.04×1060.000008
Stainless steel6.90×10−71.45×1060.00094
Mercury9.80×10−71.02×1060.00090
Nichrome1.10×10−66.70×1050.0004
Manganese1.44×10−66.94×105
Graphite – parallel to basal plane2.5×10−6 to 5.0×10−62×105 to 3×105
Carbon (amorphous)5×10−4 to 8×10−41.25×103 to 2.00×103−0.0005
GaAs (gallium arsenide)10−3 to 10810−8 to 103
Graphite- perpendicular to basal plane3×10−33.3×102
Sea water2.0×10−14.8
Germanium4.6×10−12.17−0.048
Drinking water2×101 to 2×1035×10−4 to 5×10−2
Wood (damp)103 to 10410−4 to 10−3
Silicon2.3×1034.35×10−4−0.075
Deionized water1.8×1055.5×10−6
Air109 to 1015~10−15 to 10−9
Glass1011 to 101510−15 to 10−11
Diamond1012~10−13
Ebonite (hard rubber)101310−14
Wood (dry)1014 to 101610−16 to 10−14
Sulfur101510−16
Fused silica / fused quartz7.5×10171.3×10−18
Galinstan2.89×10−73.46×106
PET102110−21
Teflon1023 to 102510−25 to 10−23