| When it comes to conductivity, copper is king of the industrial metals. Thanks to its low level of resistivity – how strongly a material opposes the flow of current – the red metal’s main use is in electrical applications.
Aluminium is copper’s closest rival, albeit an inferior one by most measures. When the prices of the two metals were similar, as at the start of 2002, the choice of copper for cabling in everything from power lines to automotive wiring was a no-brainer...............................................Full Article: Source
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