Mo-CONTAINING AUSTENITIC STAINLESS STEEL AND ITS MANUFACTURING METHOD

PROBLEM TO BE SOLVED: To provide an austenitic stainless steel which is excellent in corrosion resistance and hot-working processability and produces no wrinkle pattern at bending, even when solution treatment is omitted. SOLUTION: The austenitic stainless steel has a specific composition essentiall...

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Hauptverfasser:	MATSUDA TAKAAKI, HANAMI TETSUO, YUMINO KIMIHISA
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 MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an austenitic stainless steel which is excellent in corrosion resistance and hot-working processability and produces no wrinkle pattern at bending, even when solution treatment is omitted. SOLUTION: The austenitic stainless steel has a specific composition essentially comprising 0.20-0.60% Cu, 0.010-0.100% Al, 0.0005-0.0040% Ca and 0.0005-0.0020% B. The steel may further contain at least one chosen from Ti, Nb and V. Preferably, Ni-bal is adjusted to from -2 to +1. A steel material obtained by subjecting the steel to hot-rolling with a cumulative rolling reduction ratio of ≥50% at ≥1,050°C and a finishing temperature of 800-950°C or to two-heat rolling is suitable for a structural member of a chemical tanker. COPYRIGHT: (C)2005,JPO&NCIPI