Material	ρ (Ω•m) at 20 °C
Resistivity	σ (S/m) at 20 °C
Conductivity
Silver	1.59×10−8	6.30×107
Copper	1.68×10−8	5.96×107
Annealed copper	1.72×10−8	5.80×107
Gold	2.44×10−8	4.10×107
Aluminum	2.82×10−8	3.5×107
Calcium	3.36×10−8	2.98×107
Tungsten	5.60×10−8	1.79×107
Zinc	5.90×10−8	1.69×107
Nickel	6.99×10−8	1.43×107
Lithium	9.28×10−8	1.08×107
Iron	1.0×10−7	1.00×107
Platinum	1.06×10−7	9.43×106
Tin	1.09×10−7	9.17×106
Carbon steel	(1010)	1.43×10−7
Lead	2.2×10−7	4.55×106
Titanium	4.20×10−7	2.38×106
Grain oriented electrical steel	4.60×10−7	2.17×106
Manganin	4.82×10−7	2.07×106
Constantan	4.9×10−7	2.04×106
Stainless steel	6.9×10−7	1.45×106
Mercury	9.8×10−7	1.02×106
Nichrome	1.10×10−6	9.09×105
GaAs	5×10−7 to 10×10−3	5×10−8 to 103
Carbon (amorphous)	5×10−4 to 8×10−4	1.25 to 2×103
Carbon (graphite)	2.5×10−6 to 5.0×10−6 //basal plane
3.0×10−3 ⊥basal plane	2 to 3×105 //basal plane
3.3×102 ⊥basal plane
Carbon (diamond)	1×1012	~10−13
Germanium	4.6×10−1	2.17
Sea water	2×10−1	4.8
Drinking water	2×101 to 2×103	5×10−4 to 5×10−2
Silicon	6.40×102	1.56×10−3
Wood (damp)	1×103 to 4	10−4 to 10-3
Deionized water	1.8×105	5.5×10−6
Glass	10×1010 to 10×1014	10−11 to 10−15
Hard rubber	1×1013	10−14
Wood (oven dry)	1×1014 to 16	10−16 to 10-14
Sulfur	1×1015	10−16
Air	1.3×1016 to 3.3×1016	3×10−15 to 8×10−15
Paraffin wax	1×1017	10−18
Fused quartz	7.5×1017	1.3×10−18
PET	10×1020	10−21
Teflon	10×1022 to 10×1024	10−25 to 10−23