HIGH STRENGTH EXTRA-THICKNESS WIDE FLANGE SHAPE HAVING EXCELLENT TOUGHNESS, AND METHOD FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To provide an extra-thickness wide flange shape in which the thickness of a flange is ≥80 mm, and also, the strength and toughness of the flange are excellent, and a method for producing the same. SOLUTION: The extra-thickness wide flange shape has composition comprising, by ma...

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Bibliographische Detailangaben
Hauptverfasser:	KITA YASUSHI, HASEGAWA HIROSHI, ONODERA NORIAKI, YAMAMOTO KOICHI, WAKATSUKI TERUYUKI
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 TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an extra-thickness wide flange shape in which the thickness of a flange is ≥80 mm, and also, the strength and toughness of the flange are excellent, and a method for producing the same. SOLUTION: The extra-thickness wide flange shape has composition comprising, by mass, 0.005 to 0.05% C, 0.01 to 0.50% Si, >2.20 to 3.0% Mn, 0.005 to 0.1% Al, 0.007 to 0.025% Ti, 0.001 to 0.005% N and 0.0003 to 0.0025% B, and in which the content of Ni is limited to