Section 15 Base metals and articles of base metal 74 Copper and articles thereof 74 03 Refined copper and copper alloys, unwrought 74 03 29 Other copper alloys (other than master alloys of heading 74.05) 74 03 29 00 Other copper alloys (other than master alloys of heading 74.05) Commodity Code Description 74 03 29 00 000 Other copper alloys (other than master alloys of heading 74.05)