The best replacement for copper wire is aluminum wire.

The best alternatives to copper wire are rated as following:
★★★★★  aluminum wire
★★  silver wire
★  aluminum
★  copper wire
★  aluminium wire
★  stranded copper wire
★  fiber optics
★  iron wire
★  magnet wire
  fibre optic
  stranded
  gold wire
  fiber optic cable
  nichrome wire
  fiber optic wire
  optical fibre
  fiber wire
  fibre optic cable
  solid

Your alternative for copper wire is not listed? Suggest!
Speaking about copper wire, one probably shouldn't forget about silver nitrate.

Other search terms related to copper wire and their ratings are:
★★★★★ silver nitrate
You have in mind a companion for copper wire and it is not yet here? Propose!



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copper wire
aluminum wire
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