IPC Subgroup
C21D 6/02 Hardening by precipitation
Introduced: July 1974
Last revised: January 2006
Full Title
Heat treatment of ferrous alloys > Hardening by precipitation
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- METALLURGY OF IRON
- Subclass:
- MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING