Electrical Resistivity of Pure Metals

White metal with brdhant metaUic luster face-centered cubic crystals density 10.43 g/cm at 20°C, and 9.18 g/cm at 1,100°C melts at 961.8°C vaporizes at 2,162°C vapor pressure 5 torr at 1,500° C pure metal has the highest electrical and thermal conductive of aU metals, electrical resistivity of pure metal at 25°C 1.617x10 ohm-cm elastic modulus 71GPa (10.3x10 psi) Poisson s ratio 0.39 (hard drawn), 0.37 (annealed) viscosity of hquid silver 3.97 centipoise at 1,043°C thermal neutron absorption cross section 63 1 barns insoluble in water inert to most acids attacked by dilute HNO3 and concentrated H2SO4 soluble in fused caustic soda or caustic potash in the presence of air. 

The resistance per unit length of wires of various metals is tabulated here. Values were calculated from resistivity values in the tables Electrical Resistivity of Pure Metals and Electrical Resistivity of Selected Alloys , which appear in Section 12. In practice, resistance may vary because of differing heat treatments and metal composition. The values in the table refer to 20°C, but values at other temperatures may be calculated from the following resistivity data ... 

The electrical resistivity of pure metals usually falls by orders of magnitude on their being cooled from 300 K to 1K. That of alloys, on the other hand, tends to be relatively temperature independent. In both cases, there is a possible exception. At a range of critical temperatures below about... 

J Bass, KH Fisher. Electrical resistivity of pure metals and dilute alloys. In Landolt-Bomstein New Series. Vol 15. Berlin Springer-Verlag, 1982. 

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