FYI.

The prices shown are an indication of the sums that may be paid within the metals recycling industry by typically medium to large sized businesses who are receiving material from scrap merchants and local collectors.
Grade OA
Plate and structural, consisting of cut structural and plate arisings predominantly 6mm thick in sizes not exceeding 1.50m x 0.60m x 0.60m (or as otherwise agreed) prepared in a manner to ensure compact charging. May include properly prepared wagon material less than 6mm thick. Excludes tube and hollow section.
Grade 1
Old Steel, predominantly 6mm thick, in sizes not exceeding 1.50m x 0.60m x 0.60m (or as otherwise agreed) prepared in a manner to ensure compact charging. May include tube and hollow section, wire rope properly prepared by agreement with consumer, properly prepared material from heavy commercial vehicles including wheels, but excluding body and wheels from light vehicles.
Grade 2
Old Steel, predominantly 3mm thick, in sizes not exceeding 1m x 0.60m x 0.60m (or as otherwise agreed) prepared in a manner to ensure compact charging. May include properly prepared material from dismantled vehicles including light vehicle wheels, but must exclude vehicle body arisings and also domestic appliances.
Grade 5A
Compressed old light steel in works' furnace sizes. Must be free from tin coated and non-metallic material. Must not include heavy iron and steel, wire ropes, wire, fuel tanks, or tin coated materials and must not include loose or free dirt or tyres.
Grade 5B
Pressed and sheared old light steel. To include material emanating from press shears, consisting of pressed and sheared depolluted motor cars, white goods and old light iron and steel arisings. Must not include heavy iron and steel, wire ropes, wire, fuel tanks, or tin coated materials and must not include loose or free dirt or tyres.
Grade 5C
Loose old light steel. May consist of depolluted motor cars, white goods and old light iron and steel arisings. Must not include heavy iron and steel, wire ropes, wire, fuel tanks, or tin coated materials and must not include loose or free dirt or tyres.
HTH.