Electrical Conductivity of Various Metals

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The most effective conductors of electricity are metals that have a single valence electron that is free to move and causes a strong repelling reaction in other electrons. This is the case in the most conductive metals, such as silver, gold, and copper, who each have a single valence electron that moves with little resistance and causes a strong repelling reaction.

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Conductivity & Resistivity in Metals

Material

Resistivity p(Ω•m) at 20°C

Conductivity σ(S/m) at 20°C

Silver 1.59x10-8 6.30x107
Copper 1.68x10-8 5.98x107
Annealed Copper 1.72x10-8 5.80x107
Gold 2.44x10-8 4.52x107
Aluminum 2.82x10-8 3.5x107
Calcium 3.36x10-8 2.82x107
Beryllium 4.00x10-8 2.500x107
Rhodium 4.49x10-8 2.23x107
Magnesium 4.66x10-8 2.15x107
Molybdenum 5.225x10-8 1.914x107
Iridium 5.289x10-8 1.891x107
Tungsten 5.49x10-8 1.82x107
Zinc 5.945x10-8 1.682x107
Cobalt 6.25x10-8 1.60x107
Cadmium 6.84x10-8 1.467
Nickel (electrolytic) 6.84x10-8 1.46x107
Ruthenium 7.595x10-8 1.31x107
Lithium 8.54x10-8 1.17x107
Iron 9.58x10-8 1.04x107
Platinum 1.06x10-7 9.44x106
Palladium 1.08x10-7 9.28x106
Tin 1.15x10-7 8.7x106
Selenium 1.197x10-7 8.35x106
Tantalum 1.24x10-7 8.06x106
Niobium 1.31x10-7 7.66x106
Steel (Cast) 1.61x10-7 6.21x106
Chromium 1.96x10-7 5.10x106
Lead 2.05x10-7 4.87x106
Vanadium 2.61x10-7 3.83x106
Uranium 2.87x10-7 3.48x106
Antimony* 3.92x10-7 2.55x106
Zirconium 4.105x10-7 2.44x106
Titanium 5.56x10-7 1.798x106
Mercury 9.58x10-7 1.044x106
Germanium* 4.6x10-1 2.17
Silicon* 6.40x102 1.56x10-3</tbody>
  • Note: The resistivity of semiconductors (metalloids) is heavily dependent on the presence of impurities in the material.

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