#1 Bright Copper Wire #1 Bright Copper Wire - Is copper wire that is at least 16 gauge, has no insulation and no tarnish or coating whatsoever. It should be kept separate from other forms of copper as it is generally bought and sold at a premium.

#1 Copper Copper tubing, tarnished wire of at least 16 gauge or solids that are free of other material such as paint, solder, insulation and attachments.

#2 Copper This grade of copper primarily includes copper tubing that is either oxidized or has paint or solder, copper castings, hair or fine gauge wire and wire that is burnt, tinned, lacquered or shellacked. Insulation and attachments should be removed.

Copper Turnings Copper turnings are the residual shavings of copper left over as a by-product in the process of manufacturing copper products.