Resistivity and Temperature Coefficient at 20 C
Material | Resistivity ρ (ohm m) | Temperature coefficient α per degree C | Conductivity σ x 107 /Ωm | Ref |
Silver | 1.59 | x10-8 | .0038 | 6.29 | 3 |
Copper | 1.68 | x10-8 | .00386 | 5.95 | 3 |
Copper | 1.724 | x10-8 | ... | ... | 4 |
Copper, annealed | 1.72 | x10-8 | .00393 | 5.81 | 2 |
Aluminum | 2.65 | x10-8 | .00429 | 3.77 | 1 |
Tungsten | 5.6 | x10-8 | .0045 | 1.79 | 1 |
Iron | 9.71 | x10-8 | .00651 | 1.03 | 1 |
Platinum | 10.6 | x10-8 | .003927 | 0.943 | 1 |
Manganin | 48.2 | x10-8 | .000002 | 0.207 | 1 |
Lead | 22 | x10-8 | ... | 0.45 | 1 |
Mercury | 98 | x10-8 | .0009 | 0.10 | 1 |
Nichrome (Ni,Fe,Cr alloy) | 100 | x10-8 | .0004 | 0.10 | 1 |
Constantan | 49 | x10-8 | ... | 0.20 | 1 |
Carbon* (graphite) | 3-60 | x10-5 | -.0005 | ... | 1 |
Germanium* | 1-500 | x10-3 | -.05 | ... | 1 |
Silicon* | 0.1-60 | ... | -.07 | ... | 1 |
Glass | 1-10000 | x109 | ... | ... | 1 |
Quartz (fused) | 7.5 | x1017 | ... | ... | 1 |
Hard rubber | 1-100 | x1013 | ... | ... | 1 |
*The resistivity of semiconductors depends strongly on the presence of impurities in the material, a fact which makes them useful in solid state electronics.
References:
1. Giancoli, Douglas C., Physics, 4th Ed, Prentice Hall, (1995).
2. CRC Handbook of Chemistry and Physics, 64th ed.
3. Wikipedia, Electrical resistivity and conductivity.
4. Engineering Toolbox
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Index
Tables
Reference Giancoli |