STEEL FOR MACHINE STRUCTURE SUPERIOR IN COLD FORGEABILITY, AND MANUFACURING METHOD THEREFOR

PROBLEM TO BE SOLVED: To provide a steel for machine structure with high cleanliness and remarkably superior in cold forgeability. SOLUTION: The steel for machine structure superior in cold forgeability is characterized by including, by wt.%, 0.08-0.61% C, 0.03-0.35% Si, 0.30-1.0% Mn, 0.02-0.06% Al,...

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Bibliographische Detailangaben
1. Verfasser:	YOSHIMURA TSUNEO
Format:	Patent
Sprache:	eng
Schlagworte:	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 PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a steel for machine structure with high cleanliness and remarkably superior in cold forgeability. SOLUTION: The steel for machine structure superior in cold forgeability is characterized by including, by wt.%, 0.08-0.61% C, 0.03-0.35% Si, 0.30-1.0% Mn, 0.02-0.06% Al, 0.002-0.2% N, and the balance Fe with unavoidable impurities, and precipitating AlN in the steel so as to be 0.04-0.050%. The steel may further include one or more of Cr