Metals

There are several different grades of Aluminum, Copper, Brass and Stainless steel. Here is a little aid to help you determine what type of scrap metal you have.

Aluminum

Aluminum Cans
Any aluminum beverage container that has been emptied of its contents and is uncontaminated in any form.  Aluminum Cans
 
Aluminum Extrusion
Consisting of window frames, door frames, structural type aluminum, with no contamination i.e., nails screws, staples, putty, paint, weather stripping, foam, etc. Must be 6063 series aluminum. Extrusion
 
Painted Alum Extrusion
 Same as regular extruded aluminum, however, may contain small amounts of paint, caulking, weather stripping, dirt, etc. Painted Extrusion
 
Clip Aluminum (MLC)
 Most common grade of aluminum.  Mixture of various alum alloys. Consists of plate, bar, solids, chunks or machined parts. Must be free of contamination, paint, nails, screws, etc.  Clip
 
Painted Clip Alum
Same as regular clip, however, may contain small amounts of paint, caulk or coatings. 
 
Aluminum Siding
  Thin aluminum house siding, rain gutters, fascia, ect… May have paint but must be free of staples, nails or other contaminates. Siding

Copper

Bright & Shiny Copper
Copper wire that is not corroded or burned and must be shiny in its appearance. No contamination in any form. Must be thicker than a pencil lead. (10 Ga.) 
 #1 Copper
Clean uncontaminated with no paint, solder, insulation, dirt, etc. Can be tubing or wire. Wire must be bare and thicker than a pencil lead. #1 Copper
 #2 Copper
 Copper that has paint, dirt, solder, corrosion, etc. Insulated copper is not accepted as #2 copper. Can be tubing or wire. Bare wire under pencil lead thickness is accepted. #2 Copper
 Insulated #1 Wire
 Insulated Copper wire that is 16 gage or thicker (1/16 inch). If wire is stranded, each wire must be 1/16” or thicker. Must have a copper recovery of 70% or more. Insulated #1 Copper
 
Insulated #2 Wire
 Insulated Copper wire smaller than 16 gage (1/16 inch) and has a copper recovery of 55% - 69%. The copper wire may be coated by tin or nickel. All stranded wire smaller than 1/16”. Ins #2 Copper
 
Strippable Copper Wire
 Copper wire that is at least ½” thick with one layer of rubber or plastic insulation.  Strippable #1 Copper

Brass

Yellow Brass
Brass that has a yellowish look in appearance. Commonly valves, meters, faucets. No Contamination. Free of iron, paint, plastic, washers, glass, etc.. Yellow Brass
 
Red Brass
Brass that looks reddish in appearance. Has a higher copper content. Commonly valves, meters, faucets. No Contamination. Free of iron, paint, plastic, washers, glass, etc.. (78% – 82% Copper) Red Brass