Resistivity table-Iron, Copper, Aluminium, Gold, Silver, Tungsten
This page mentions resistivity table for various substances. The resistivity table covers resistivity values of Aluminium, Brass, Cadmium, Cobalt, Copper, Constantan, Carbon, Gold, Germanium, Glass, Iron, Lead, Manganin, Mercury, Nichrome, Nickel, Palladium, Platinum, Quartz, Silver, Silicon, Tungsten, Tantalum, Tin, Zinc etc.
What is Resistance and its Resistivity?
➤The resistance is the property of a substance which opposes flow of current (or electrons) through it.
➤For length of wire (l) having cross section area (a), it is expressed by following equation.
Resistance (R) = ρ* l / a , Ohms
Where, ρ = Resistivity of the material (in Ohm-meters)
l = length of wire, (in meters)
a = cross section area of wire (in meter2)
• Resistance of conductor depends on various parameters viz. length, cross section area, type of material, temperature of the
material.
• Resistivity varies with temperature.
• Good conductors of electricity possess low values of resistivity.
• Good insulators have high value of resistivity.
Resistivity table
Following table mentions resistivity values of various substances in ohm-metres (Ω-m).
| Substance name | Resistivity in ohm-metre |
|---|---|
| Aluminium | 2.65 x 10-8 |
| Brass | About (0.6 to 0.9) x 10-7 |
| Cadmium | 6 x 10-8 |
| Cobalt | 5.6 x 10-8 |
| Copper | 1.7 x 10-8 |
| Constantan | 49 x 10-8 |
| Carbon (Graphite) | between 3 to 60 x 10-5 |
| Gold | 2.4 x 10-8 |
| Germanium | 4.6 x 10-1 |
| Glass | 1014 |
| Iron | 1.0 x 10-7 |
| Lead | 1.9 x 10-7 |
| Manganin | 4.2 x 10-7 |
| Mercury | 98 x 10-8 |
| Nichrome | 1.1 x 10-6 |
| Nickel | 7 x 10-8 |
| Palladium | 1.0 x 10-7 |
| Platinum | 0.98 x 10-7 |
| Quartz | 7 x 1017 |
| Silver | 1.6 x 10-8 |
| Silicon | 6.4 x 102 |
| Tungsten | 4.9 x 10-8 |
| Tantalum | 1.3 x 10-7 |
| Tin | 1.1 x 10-7 |
| Zinc | 5.5 x 10-8 |
Links to useful Measurements
Following are the links to other useful measurements available on Test and Measurement World website.
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