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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
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FR934558D1946-09-271946-09-27Procédé de traitement à chaud de métaux et produits obtenus par ce procédé
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