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PCE
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DIFF Subgroup
C25F 3/22

of heavy metals

Introduced: July 1974

Full Title

Electrolytic etching or polishing > Polishing > of heavy metals

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

IPC defines codes here since 1974.

Child Classifications

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  • C25F 3/24 of iron or steel since 1974 IPC+CPC Available in IPC and CPC
  • C25F 3/26 of refractory metals since 1974 IPC+CPC Available in IPC and CPC
  • C25F 3/28 of actinides since 1974 IPC+CPC Available in IPC and CPC