STEEL FOR CARBURIZATION

PROBLEM TO BE SOLVED: To provide a steel for carburization, for which excessive carburization is suppressed in any heat treatment condition of the carburization, and which can acquire superior cold forgeability and fatigue strength. SOLUTION: The steel has a composition including, by mass%, 0.10-0.3...

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Bibliographische Detailangaben
Hauptverfasser:	ICHINOMIYA KATSUYUKI, KIMURA HIDETO, MARUTA KEIICHI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a steel for carburization, for which excessive carburization is suppressed in any heat treatment condition of the carburization, and which can acquire superior cold forgeability and fatigue strength. SOLUTION: The steel has a composition including, by mass%, 0.10-0.35% C, 0.01-0.50% Si, 0.3-1.5% Mn, at most 0.02% P, at most 0.03% S, 0.01-0.05% Al, 1.0-3.0% Cr and 0.008-0.035% Sb, in such a range as to satisfy following expression (1): 150[% Sb]+3[% Si]-[% Cr]≥0 wherein each character in [ ] represents mass% of the element. COPYRIGHT: (C)2011,JPO&INPIT