Substance

Resistivity r (W .m)

Aluminum

2.8x10^-8

Brass

~8x10^-8

Constantan (60% Cu, 40% Ni)

~44x10^-8

Copper

1.7x10^-8

Iron

~10x10^-8

Manganin (~84% Cu, ~12% Mn, ~4% Ni)

44x10^-8

Mercury

96x10⁸

Nichrome (~59% Ni, ~ 23% Cu, ~ 16% Cr)

100x10^-8

Platinum

10x10^-8

Silver

1.6X10^-8

Tungsten

5.5x10^-8

Carbon

3.5x10^-5

Germanium

0.46

Silicon

100-1000

Glass

10¹⁰-10¹⁴

Neoprene

10⁹

Polyethylene

~10⁸

Polystyrene

~10⁹

Porcelain

~ 10¹¹

Teflon

10¹⁴

Blood

1.5

Fat

25