Ground Systems
Material electrical resistivities

Resistivities of Various Materials

Author: R.J.Edwards G4FGQ © 15th February 1998
MATERIAL RESISTIVITY
Ohm-metres at 20 C
Silver 1.63 x 10^-8
Copper, annealed 1.72 x 10^-8
Copper, hard drawn 1.77 x 10^-8
Gold, pure 2.44 x 10^-8
Aluminium 2.82 x 10^-8
Zinc 5.68 x 10^-8
Brass 7.14 x 10^-8
Iron, pure 1.00 x 10^-7
Tin 1.15 x 10^-7
Lead 2.20 x 10^-7
Steel, structural 3.00 x 10^-7
Constantan 4.90 x 10^-7
Mercury 9.62 x 10^-7
Carbon 3.00 x 10^-5
Sea water 0.22

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