Gold can be used as a conductor, or for plating metal packages to make them bright, shiny and expensive. It has slightly higher resistivity than copper or silver, but it never tarnishes so it is preferred for microwave applications requiring wire-bonding. Gold is more often used for military stuff than commercial stuff. Can you guess why?

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

Formula or Composition Au
Bulk Resistivity 2.44 μΩ-cm
 Bulk Resistivity 2.44E-8 Ω-cm
 Bulk Conductivity 4.10E7 S/m
Temperature Coefficient of Resistivity (TCR) 4000 ppm/°C
Mass Density 19.3 gr/cc
Heat Capacity 127.5 J/kg/°C
Thermal Conductivity (k) 311 W/m°C
Temperature Coefficient of Expansion (TCE) 14.2 ppm/°C
Melting Point, °C 1064 °C
Melting Point, °F 1947 °F

Author : Unknown Editor