STAINLESS STEEL SHEET FOR WELDED STRUCTURE HAVING EXCELLENT SLIPPERINESS, METHOD FOR PRODUCING THE SAME, AND WELDED STRUCTURE

• Main Authors: KIKUYAMA MASATAKE, ISHIBASHI GENICHI, UCHINO TOMOHIKO, FUJITA KENICHI, TSUZUKI SATOSHI
• Format: Patent
• Language: English
• Published: 30.06.2011
• 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; 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

PROBLEM TO BE SOLVED: To provide a stainless steel sheet for a welded structure which has excellent corrosion resistance in the weld zone, and further has excellent slipperiness in the surface of the steel sheet, a method for producing the same, and a welded structure using the steel sheet. SOLUTION: The stainless steel sheet for a welded structure has a componential composition comprising, by mass, 0.01 to 0.10% C, ≤1.0% Si, 1.0 to 2.0% Mn, 10 to 15% Cr, 0.3 to 1.0% Ni, 0.1 to 0.5% Ti and 0.01 to 0.03% N, and in which the above components are comprised so as to satisfy inequality (1): Ti/(C+N)≥3, and so as to satisfy inequality (2): F value=Cr+2Si+4Ti-2Ni-Mn-30(C+N)≤11, and the balance Fe with inevitable impurities, and in which surface roughness is ≤10 μm by Ra. COPYRIGHT: (C)2011,JPO&INPIT