HEAT-TREATED STEEL MATERIAL AND HEAT TREATMENT METHOD FOR STEEL MATERIAL

To provide a heat-treated steel excellent in both tensile strength and toughness.A heat-treated steel contains 0.38 to 1.05% by mass of C, 0.0 to 1.0% by mass of Mn, 0.0 to 0.50% by mass of Cr, and 0.0 to 1.5% by mass of Si with the remainder being Fe and unavoidable impurities, wherein an average c...

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Bibliographic Details
Main Author ISHIMOTO, Kazuhiro
Format Patent
LanguageEnglish
French
German
Published 21.02.2024
Subjects
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS
MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS
METALLURGY
METALLURGY OF IRON
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:To provide a heat-treated steel excellent in both tensile strength and toughness.A heat-treated steel contains 0.38 to 1.05% by mass of C, 0.0 to 1.0% by mass of Mn, 0.0 to 0.50% by mass of Cr, and 0.0 to 1.5% by mass of Si with the remainder being Fe and unavoidable impurities, wherein an average crystal grain size at a grain boundary setting angle of 15° is 10 × C + 7(µm) or less (wherein, C represents a carbon content (%)).
Bibliography:Application Number: EP20220788163