Alloys based on aluminium

Introduced: September 1968

Of 6 combined children, 4 exist in both systems.

2 codes are CPC-only extensions.

Child Classifications

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C22C 21/003 CPC only CPC only
C22C 21/006 CPC only CPC only
C22C 21/02 with silicon as the next major constituent IPC+CPC Available in IPC and CPC
C22C 21/06 with magnesium as the next major constituent since 1974 IPC+CPC Available in IPC and CPC
C22C 21/10 with zinc as the next major constituent since 1974 IPC+CPC Available in IPC and CPC
C22C 21/12 with copper as the next major constituent since 1974 IPC+CPC Available in IPC and CPC