6 Iron, steel, aluminum and aluminum alloys in sheet, rod, bar and/or billet form; multi-layer strips, foils, rods and bars made primarily of metals, namely, steel, aluminum or aluminum alloys, combined with at least one layer of nonmetallic materials, namely, plastics, barrier layers, namely, vacuum deposited thin glass or ceramic layers, metallized layers, sputtered metal or ceramic layers, or barrier plastic layers, thin layers of ceramic or glass, paint layers and/or paper; metal containers in the form of receptacles, trays, pouches, sleeves or bags for the storage and transportation of goods; container closures of metal, in particular iron, steel, aluminum or aluminum alloys; container closures made primarily of metal, in particular iron, steel, aluminum or aluminum alloys in combination with at least one layer of non-metallic materials, namely, plastics, barrier layers, namely, vacuum deposited thin glass or ceramic layers, metallized layers, sputtered metal or ceramic layers, or barrier plastic layers, thin layers of ceramic or glass, paint layers and/or paper; metal cover materials in the form of strips, foils, bars, and rods made of iron, steel, aluminum or aluminum alloys for lidding of all types of containers, particularly, receptacles, cans, boxes, pouches, tubes, sleeves, bags, trays, bowls or bottles; metal container closures in the nature of cover materials in the form of strips, foils, bars and rods made of iron, steel, aluminum or aluminum alloys for lidding of all types of containers, particularly, receptacles, cans, boxes, pouches, tubes, sleeves, bags, trays, bowls or bottles in combination with at least one layer of non-metallic materials, namely, plastics, barrier layers, namely, vacuum deposited thin glass or ceramic layers, metallized layers, sputtered metal or ceramic layers, or barrier plastic layers, thin layers of ceramic or glass, paint layers and/or paper