Section 15 BASE METALS AND ARTICLES OF BASE METAL 74 COPPER AND ARTICLES THEREOF 74 09 COPPER PLATES, SHEETS AND STRIP, OF A THICKNESS EXCEEDING 0.15 MM. 74 09 40 PLATES,SHEETS,& STRIP >0.15MM OF COPPER-NCKL/COPPER-NCKL-ZINC BASE ALLOYS Commodity Code Description 74 09 40 00 PLATES,SHEETS,& STRIP >0.15MM OF COPPER-NCKL/COPPER-NCKL-ZINC BASE ALLOYS