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Copper

Copper is a metal often used as a conducting material. Telephone companies actually used to make ton of money by sending voice over thin copper wires, believe it or not! Next to silver, copper has the second best conductivity of all metals.  Unfortunately it oxidizes, and in many applications the oxide is unacceptable so copper is often plated with nickel/gold, or pre-tinned with solder.

All values except melting point are assumed to be at 25 degrees C, and may vary dramatically over temperature.

Formula or Composition Cu
Bulk Resistivity 1.673 μΩ-cm
Bulk Resistivity  1.673E-8μΩ-cm
Bulk Conductivity  5.98E+7 S/m
Temperature Coefficient of Resistivity (TCR) 3930 ppm/°C*
Mass Density 8.92 gram/cc
Heat Capacity 385.2 J/kg/°C
Thermal Conductivity (k) 416 W/m°C
Temperature Coefficient of Expansion (TCE) 16.6 PPM/°C
Melting Point, °C 1083 °C
Melting Point, °F 1981 °F

* Tempco value is at 20 degrees C 

 

Author : Unknown Editor

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