during manufacturing of plates or strips (C21D8/12 takes precedence)

Introduced: January 1980

Title

Titles differ between systems:

IPC: during manufacturing of plates or strips

CPC: during manufacturing of plates or strips (C21D8/12 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment > during manufacturing of plates or strips

CPC:

Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment (hardening articles or materials formed by forging or rolling with no further heating beyond that required for the formation C21D1/02) > during manufacturing of plates or strips (C21D8/12 takes precedence)

IPC and CPC are identically structured here. All 6 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

Child Classifications

Navigate with arrow keys, Enter to open

C21D 8/021 involving particular fabrication steps or treatments of ingots or slabs since 2026 +1 CPC IPC+CPC Available in IPC and CPC
C21D 8/0221 characterised by the working steps since 2026 +4 CPC IPC+CPC Available in IPC and CPC
C21D 8/0247 characterised by the heat treatment since 2026 +5 CPC IPC+CPC Available in IPC and CPC
C21D 8/0278 involving a particular surface treatment (C21D8/0294 takes precedence) since 2026 +2 CPC IPC+CPC Available in IPC and CPC
C21D 8/0294 involving a localised treatment since 2026 IPC+CPC Available in IPC and CPC
C21D 8/04 to produce plates or strips for drawing, e.g. for deep-drawing since 1980 +5 CPC IPC+CPC Available in IPC and CPC