AUSTENITIC STAINLESS STEEL MATERIAL AND METHOD OF MANUFACTURING THE SAME AND VACUUM COMPONENT

To provide an austenitic stainless steel material having excellent vacuum performance and corrosion resistance.SOLUTION: There is provided an austenitic stainless steel material, which comprises, by mass, 0.010 to 0.200% of C, 2.00% or less of Si, 0.01 to 3.00% or less of Mn, 0.035% or less of P, 0....

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Bibliographische Detailangaben
Hauptverfasser:	SEKIMUKAI KOTARO, KONO AKINORI
Format:	Patent
Sprache:	eng ; jpn
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:	To provide an austenitic stainless steel material having excellent vacuum performance and corrosion resistance.SOLUTION: There is provided an austenitic stainless steel material, which comprises, by mass, 0.010 to 0.200% of C, 2.00% or less of Si, 0.01 to 3.00% or less of Mn, 0.035% or less of P, 0.030% or less of S, 6.00 to 14.00% of Ni, 20.0 to 26.0% of Cr, 3.00% or less of Mo, 0.01 to 3.00% of Cu, 0.200% or less of Al, 0.10 to 0.25% of N and the balance Fe with impurities, wherein the concentration of Cr relative to the total concentration of Fe, Cr, Ni, Mo and Mn in the film formed on the surface is 40.0 mass% or more.SELECTED DRAWING: None 【課題】真空性能及び耐食性に優れるオーステナイト系ステンレス鋼材を提供する。【解決手段】質量基準で、Ｃ：０．０１０～０．２００％、Ｓｉ：２．００％以下、Ｍｎ：０．０１～３．００％、Ｐ：０．０３５％以下、Ｓ：０．０３０％以下、Ｎｉ：６．００～１４．００％、Ｃｒ：２０．０～２６．０％、Ｍｏ：３．００％以下、Ｃｕ：０．０１～３．００％、Ａｌ：０．２００％以下、Ｎ：０．１０～０．２５％を含み、残部がＦｅ及び不純物からなり、表面に形成された皮膜中のＦｅ、Ｃｒ、Ｎｉ、Ｍｏ及びＭｎの合計濃度に対するＣｒの濃度が４０．０質量％以上である、オーステナイト系ステンレス鋼材である。【選択図】なし