6 Chromium; Molybdenum; Niobium; Tantalum; Titanium; Zirconium; Alloy steel scraps; Alloyed steels; Alloys used for casting; Cast steel; Castings, foils, powder, and rolled, drawn or extruded semi-finished articles of lead or its alloys; Rolled steels; Tantalum alloys; Titanium alloy; Tungsten ores; Alloys of common metal; Aluminum alloy; Beverage cans of metal; Casting alloys; Castings, foils, powder, and rolled, drawn or extruded semi-finished articles of aluminium or its alloys; Castings, foils, powder, and rolled, drawn or extruded semi-finished articles of copper or its alloys; Castings, foils, powder, and rolled, drawn or extruded semi-finished articles of nickel or its alloys; Castings, foils, powder, and rolled, drawn or extruded semi-finished articles of tin or its alloys; Common metals and their alloys; Metal castings