conductivity copperresistivity of gold
reference source for copper conductivity vs. temperature
· Data from NIST (table 2) At low temperatures the resistivity of copper approaches a "residual" resistivity. However this isn t really a concern until below 100K. At higher temperatures the resistivity is best approximated with a linear increase vs. temperature (as you ve already found).
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Resistivity and ConductivityTemperature Coefficients
· Resistivity conductivity and temperature coefficients for some common materials as silver gold platinum iron and more. Resistivity is. the electrical resistance of a unit cube of a material measured between the opposite faces of the cube.
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· Physical Property Requirements7.1 Electrical ResistivityResistivity of the copper in theannealed condition (See Note X1.1 and Table 2) shall notexceed the following values at 20 C Type of CopperResistivity max at 20 CAnnealed g/m2UNS C10100 only 0.15176 (101.00 IACS min)All others 0.15328 (100.00 IACS min)8.
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· Resistance Temperature Coefficient. Since the electrical resistanceof a conductorsuch as a copper wire is dependent upon collisional proccesses within the wire the resistance could be expected to increase with temperaturesince there will be more collisions and that is borne out by experiment. An intuitive approach to temperature dependence leads
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Table of Resistivity
· Conductivity σ x 10 7 /Ωm Ref Silver 1.59 x10-8.0038 6.29 3 Copper 1.68 x10-8.00386 5.95 3 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
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Resistivity of CopperThe Physics Factbook
It resists corrosion and is a good conductor of heat and has a high conductivity when it comes to electricity. This is why the main uses of copper are electrical. Because of its ductility it can be used to make wires of varying diameters and it is very strong.
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