AUSTENITIC STAINLESS STEEL PRODUCT AND CORROSION RESISTANT COMPONENT

• Main Authors: MORITA, Kazunari, KAWANO, Akinori
• Format: Patent
• Language: English; French; Japanese
• Published: 02.12.2021
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MACHINE TOOLS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; THREAD CUTTING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTIONTHEREWITH

An austenitic stainless steel product having a composition comprising 0.001-0.100% of C, at most 5.00% of Si, at most 2.50% of Mn, at most 0.050% of P, at most 0.0300% of S, 6.00-26.00% of Ni, 14.00-26.00% of Cr, at most 8.00% of Mo, at most 4.00% of Cu, at most 0.350% of N, and at most 3.500% of Al, on the basis of mass, and the balance comprising Fe and impurities; and excellent in corrosion resistance. The austenitic stainless steel product has an arithmetic mean roughness Ra on the surface of 0.10-3.00 μm, and a specular gloss at 60° Gs (60°) of 10-100%. L'invention concerne un matériau d'acier inoxydable à base d'austénite d'une excellente résistance à la corrosion qui présente une composition contenant, en masse, Ｃ：０,００１ à ０,１００％, Ｓｉ：５,００％ ou moins, Ｍｎ：２,５０％ ou moins, Ｐ：０,０５０％ ou moins, Ｓ：０,０３００％ ou moins, Ｎｉ：６,００ à ２６,００％, Ｃｒ：１４,００ à ２６,００％, Ｍｏ：８,００％ ou moins, Ｃｕ：４,００％ ou moins, Ｎ：０,３５０％ ou moins et Ａｌ：３,５００％ ou moins, le reste étant constitué de Fe et d'impuretés. Ce matériau d'acier inoxydable à base d'austénite présente une rugosité moyenne arithmétique (Ra) à sa surface comprise entre ０,１０ et ３,００μｍ, et un brillant spéculaire à 60 degrés (Ｇｓ（６０°）) compris entre １０ et １００％. 質量基準で、Ｃ：０．００１～０．１００％、Ｓｉ：５．００％以下、Ｍｎ：２．５０％以下、Ｐ：０．０５０％以下、Ｓ：０．０３００％以下、Ｎｉ：６．００～２６．００％、Ｃｒ：１４．００～２６．００％、Ｍｏ：８．００％以下、Ｃｕ：４．００％以下、Ｎ：０．３５０％以下、Ａｌ：３．５００％以下を含み、残部がＦｅ及び不純物からなる組成を有する、耐食性に優れるオーステナイト系ステンレス鋼材である。このオーステナイト系ステンレス鋼材は、表面の算術平均粗さＲａが０．１０～３．００μｍ及び６０度鏡面光沢Ｇｓ（６０°）が１０～１００％である。