DIFF Subgroup Additional Only
F16C 2204/20 Alloys based on aluminium
Full Title
Metallic materials; Alloys (alloys in general C22C; F16C2206/00 takes precedence) > Alloys based on aluminium
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.