C21D
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
C21D
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
C21D8/00
Modifying the physical properties by deformation combined with, or followed by, heat treatment
C21D8/00
Modifying the physical properties by deformation combined with, or followed by, heat treatment
C21D8/12
during manufacturing of articles with special electromagnetic properties
C21D8/12
during manufacturing of articles with special electromagnetic properties