Electrical conductivity

Electrical conductivity of some common elements and compounds

Formulas

Resistance calculation at 20°C $$R_{@20°C} = \rho_{@20°C} \frac{l}{A_c}$$

Resistance calculation at temperature T $$R_{@T} = \rho_{@T} \frac{l}{A_c} = \rho_{@20°C}(1+\alpha(T-20°C)) \frac{l}{A_c}$$

A_c is the cross-sectional are and l is the length.

Remeber that $$\rho = \frac{1}{\sigma}, \ \rho \ in \ [Ohm\cdot m], \ \sigma \ in \ \left[\frac{S}{m}\right]$$

Element	Electrical Conductivity σ [S/m]	Temperature Coefficient α [°C^-1]
Lithium	1.08 x 10⁷	0.46
Beryllium	3.13 x 10⁷	0.01
Sodium	2.1 x 10⁷	0.73
Magnesium	2.26 x 10⁷	0.006
Aluminum	3.77 x 10⁷	0.0039
Tungsten	1.89 x 10⁷	0.0045
Potassium	1.39 x 10⁷	0.76
Calcium	2.98 x 10⁷	0.0064
Titanium	2.38 x 10⁶	0.0065
Vanadium	5.6 x 10⁶	0.0068
Chromium	7.74 x 10⁶	0.00053
Manganese	6.2 x 10⁵	0.00001
Iron	1.0 x 10⁷	0.00641
Cobalt	1.72 x 10⁷	0.0005
Cadmium	1.38 x 10⁷
Nickel	1.43 x 10⁷	0.00641
Copper	5.96 x 10⁷	0.00429
Zinc	1.69 x 10⁷	0.0037
Gallium	6.78 x 10⁶	0.0015
Rubidium	7.79 x 10⁶	0.36
Strontium	7.62 x 10⁶	0.00056
Silver	6.3 x 10⁷	0.0061
Tin	9.17 x 10⁶	0.0042
Gold	4.52 x 10⁷	0.0034
Mercury	1.02 x 10⁶	0.00089
Lead	4.55 x 10⁶	0.0039
Uranium	3.6 x 10⁶	0.0025
Plutonium	6.7 x 10⁵	0.0037
Platinum	9.66 x 10⁶	0.00393
Silicon (amorphous)	3 x 10^-7	-0.07
Carbon (graphite)	3 x 10⁵
Carbon (amorphous)	1.25 x 10³ to 2 x 10³
Carbon (diamond)	10^-13
Drinking Water	5 x 10^-4 to 5 x 10^-2
Sea Water	4.8
Air	3 x 10^-15 to 8 x 10^-15
Dry Wood	10^-16 to 10^-14
Glass	10^-11 to 10^-15
Sulfur	10^-16
PET	10^-21