Section 15 Base metals and articles of base metal 74 Copper and articles thereof 74 09 Copper plates, sheets and strip,of a thickness >0.15mm 74 09 40 Of copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel... 74 09 40 00 Of copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel... Commodity Code Description 74 09 40 00 000 Of copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel...