Bare Bright #1 Copper wire - Shinny bare, uncoated, unalloyed
copper wire free of attachments. All the insulation has been removed
from the wire and it is free of solder, paint and corrosion.

#1 Copper wire - Bare or burnt wire that is uncoated, unalloyed and
free of attachments.  All the insulation has been removed from the
wire and it is free of solder, paint and heavy corrosion.

#1 Copper tubing - Uncoated, unalloyed copper tubing free of
attachments. All the insulation has been removed and it is free of
solder, paint and heavy corrosion.  Some discoloration is allowed.

#2 Copper wire - Non insulated thinner than #2 pencil lead with no  
attachments. Resin coated, solder, paint and heavy corrosion are
allowed.

#2 Copper tubing - paint and solder allowed but no brass allowed.

Sheet Copper - sheets of copper or tubing with heavy amounts of
paint.

Copper with brass - will be bought as yellow brass.
Types of Copper