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Metal Conductivity and Resistivity Conversion Calculator
Choose units and enter a value to convert:
| Value to convert | Result | |||
|---|---|---|---|---|
| = |
Conductivity Table of selected pure metals
| Metal | Electrical Conductivity (%IACS) |
|---|---|
| Silver (Ag) 99.99+% | 108.6 |
| Copper (Cu) 99.99+% | 102.7 |
| Gold (Au) 99.99+% | 77.9 |
| Aluminium (Al) 99.99+% | 65.1 |
| Zinc (Zn) 99.99+% | 29.2 |
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Conductivity and Resistivity
The unit of resistivity in the International System of Units (SI) is the ohm-meter or Ω.m
For electrical conductivity the Siemens per meter is used, symbolized by S/m.
Conductivity is the inverse of resistivity. If we represent conductivity by σ(Greek sigma) and resistivity by ρ(Greek rho) their relation is given by: σ = 1 / ρ.
The nanoOhm-meter nΩ.m (billionths of ohm-meter) is customarily used to express resistivity in metals. For conductivity the MegaSiemens per meter MS/m (millions of Siemens per meter) is the unit of choice.
The conductivity unit %IACS is also often used. The main advantage of %IACS over MS/m is that %IACS implies measurements at 20°C (293K or 68°F) while MS/m does not specify temperature. This makes %IACS especially useful for material comparison.
100 %IACS is equivalent to 58 MS/m.
Our Electrical Conductivity Testers automatically display the conductivity readings at 20°C even when measurements are made at different ambient temperatures.