Physics > Electrical Resistivity Values
Electrical resistivity is a measurement of how strongly a material opposes the flow of electric current. The electrical resistivity ρ of a material is given by...
Where:
- ρ is the static resistivity (measured in ohm-metres, Ω)
- R is the electrical resistance of a uniform specimen of the material (measured in ohms, Ω)
- l is the length of the piece of material (measured in metres, m)
- A is the cross-sectional area of the specimen (measured in square metres, m2)
The tables below shows the electrical resistivity of certain metals and non-metals.
| Metals |
ρ(nΩ·m) |
| Aluminium |
26.5 |
| Brass |
64 |
| Chromium |
126 |
| Copper |
17.1 |
| Gold |
22.1 |
| Iron |
96.1 |
| Lead |
208 |
| Lithium |
92.8 |
| Mercury(0°C) |
941 |
| Manganese |
1440 |
| Nichrome |
1500 |
| Nickel |
69.3 |
| Palladium |
105.4 |
| Platinum |
105 |
| Plutonium |
1414 |
| Silver |
15.9 |
| Solder |
150 |
| Steel, plain |
180 |
| Steel, stainless |
720 |
| Tantalum |
131 |
| Tin(0°C) |
115 |
| Titanium(0°C) |
390 |
| Tungsten |
52.8 |
| Uranium(0°C) |
280 |
| Zinc |
59 |
| Non-metals |
ρ(nΩ·m) |
| Aluminium oxide (14°C) |
1×1014 |
| Aluminium oxide (300°C) |
3×1011 |
| Aluminium oxide (800°C) |
4×106 |
| Carbon, amorphous |
0.35 |
| Carbon, diamond |
2.7 |
| Carbon, graphite |
650×10−9 |
| Germanium |
0.46 |
| Pyrex 7740 |
40,000 |
| Quartz |
75×1016 |
| Silicon |
640 |
| Silicon dioxide (20°C) |
1×1013 |
| Silicon dioxide (600°C) |
70,000 |
| Silicon dioxide (1300°C) |
0.004 |
| Water, liquid (0°C) |
861,900 |
| Water, liquid (25°C) |
181,800 |
| Water, liquid (100°C) |
12,740 |