Section 15 Base metals and articles of base metal 74 Copper and articles thereof 74 09 Copper plates, sheets and strip, >5mm thick 74 09 40 Of copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel Commodity Code Description 74 09 40 00 Of copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel
