AUSTENITIC STAINLESS STEEL AND METHOD OF PRODUCING THE SAME, AND SLIDING COMPONENT

• Main Authors: TERAOKA SHINICHI, ADACHI KAZUHIKO, SUGIURA NATSUKO
• Format: Patent
• Language: English; Japanese
• Published: 19.09.2019
• Subjects: ALLOYS; BLASTING; CHEMISTRY; CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES; ENGINE PLANTS IN GENERAL; FERROUS OR NON-FERROUS ALLOYS; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; STEAM ENGINES; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS

To provide an austenitic stainless steel excellent in slidability under low load and at high temperature.SOLUTION: The austenitic stainless steel sheet is provided which has a component composition containing C:0.10% or less, N:0.10% or less, Si:1.00% or less, P:0.060% or less, S:0.010% or less, Cr:10.00 to 24.00%, Ni:6.0 to 10.0%, Mn:3.5% or less, Cu:4.0% or less, Mo:3.0% or less, and the balance Fe with impurities, and in which an upper layer having an average thickness of 1 to 20 μm and including FeO, and a lower layer having an average thickness of 10 μm or less and including (Fe,Cr)Oare formed on the surface of the austenitic stainless steel sheet.SELECTED DRAWING: None 【課題】低荷重かつ高温での摺動性に優れるオーステナイト系ステンレス鋼の提供。【解決手段】質量％で、Ｃ：０．１０％以下、Ｎ：０．１０％以下、Ｓｉ：１．００％以下、Ｐ：０．０６０％以下、Ｓ：０．０１０％以下、Ｃｒ：１０．００〜２４．００％、Ｎｉ：６．０〜１０．０％、Ｍｎ：３．５％以下、Ｃｕ：４．０％以下、Ｍｏ：３．０％以下を含み、残部Ｆｅおよび不純物からなる成分組成を有し、表面に平均厚さ１〜２０μｍのＦｅ２Ｏ３を含む上層と、平均厚さ１０μｍ以下の（Ｆｅ，Ｃｒ）２Ｏ３を含む下層とが形成されているオーステナイト系ステンレス鋼を採用する。【選択図】なし