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

Full Title

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)

Child Classifications

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• C21D 8/021 involving particular fabrication steps or treatments of ingots or slabs
• C21D 8/0221 characterised by the working steps
• C21D 8/0247 characterised by the heat treatment
• C21D 8/0278 involving a particular surface treatment (C21D8/0294 takes precedence)
• C21D 8/0294 involving a localised treatment
• C21D 8/04 to produce plates or strips for drawing, e.g. for deep-drawing