Ferrous Materials: 2 Foot Plate and Structural: Must be the same size as Alloy Free and Short Steel which is 2 foot by 18 inches and smaller but can ONLY be plate and structural material such as plate steel, I-beam, H-beam and angle iron that are at least one quarter of an inch thick. 5 Foot Plate and Structural: Must also be ONLY plate and structural material same as 2 Foot Plate and Structural listed above but cut into 5 foot by 2 foot and smaller. Must also be at least one quarter of an inch thick just like the 2 foot listed above. IMPORTANT NOTE REGARDING 2 FOOT AND 5 FOOT PLATE AND STRUCTURAL MATERIALS: There cannot be any galvanized material. Nuts and bolts are ok IF ATTACHED to the P & S material but nuts and bolts cannot be purchased as P & S by themselves, if they are mixed in loose in the load it will be downgraded to Short Steel or 4 X 2. Alloy Free: Includes structural material such as trailer house frames, I-beams, channel, angle iron and black rims (rims must have valve stems and weights removed). Pipe may go as alloy free if it is BLACK. Must be cut into 2' x 18" or smaller pieces and be 1/8 of an inch thick or thicker to receive full purchase value. Must be black iron, no chrome. Short Steel: Includes all ferrous steel items. Must be cut into 2' x 18" or smaller pieces and be 1/8 of an inch thick or thicker to receive full purchase value. Any heavy steel that does not meet the specifications for Alloy Free cut into this length may go as short steel. Steel rims with valve stems attached are also Short Steel wheel weights must be removed! Mixed Cast: Anything over 3" thick will be priced at scales. Includes cast iron items such as cast iron sinks and bath tubs, some gears and older farm equipment. Clean Motor Cast: Includes cast iron motor blocks that have had all aluminum, sheet iron and non-metallic material removed from them. Also includes brake drums, rotors, crankshafts and non-aluminum heads. Unclean Motor Cast: Includes motor blocks that have not had the aluminum and sheet iron removed. 2 X 4 Steel: Includes all ferrous steel items. Must be cut into 2' X 4' or smaller pieces and be 1/8 or an inch thick or thicker to receive full sale value. Unprepared: Includes all the above materials that have not been cleaned or prepared using the information above. Price may be less than advertised depending on the quality of your material. To be classified at the Heavy Unprepared price the entire load must consist of all heavier steel such as I-beams, angle iron, pipe, etc. that are all at least 1/4" thick.