HIGH CORROSION RESISTANCE AND HIGH STRENGTH STAINLESS STEEL AND METHOD FOR MANUFACTURING SAME

A high corrosion resistance and high strength stainless steel, according to one example of the present invention, comprises, in wt%, 0.01-0.1% of C, 0.01-0.1% of N, 0.01-1.0% of Si, 0.01-3.0% of Mn, 10.0-20.0% of Cr, 0.001-1.0% of Al, at most 0.05% of P, at most 0.01% of S, and the remainder in Fe a...

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Bibliographische Detailangaben
Hauptverfasser: TAE, Gisun, KIM, Sangyun, KIM, Sangseok, PARK, Minam, KIM, Hoihun, KIM, Dohun, KONG, Junghyun
Format: Patent
Sprache:eng ; fre ; kor
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Zusammenfassung:A high corrosion resistance and high strength stainless steel, according to one example of the present invention, comprises, in wt%, 0.01-0.1% of C, 0.01-0.1% of N, 0.01-1.0% of Si, 0.01-3.0% of Mn, 10.0-20.0% of Cr, 0.001-1.0% of Al, at most 0.05% of P, at most 0.01% of S, and the remainder in Fe and other unavoidable impurities, wherein the distribution of carbides with a diameter of at least 0.5 ㎛ is at most 7/100 ㎛2 per unit area, and the microstructure is dual phase with a martensite phase and a ferrite phase, and the martensite phase is at least 20% in area ratio. Selon un exemple de la présente invention, un acier inoxydable à haute tenue à la corrosion et à haute résistance comprend, en % en poids, 0,01 à 0,1 % de C, 0,01 à 0,1 % de N, 0,01 à 1,0 % de Si, 0,01 à 3,0 % de Mn, 10,0 à 20,0 % de Cr, 0,001 à 1,0 % d'Al, au plus 0,05 % de P, au plus 0,01 % de S, et le reste étant du Fe et d'autres impuretés inévitables, la distribution de carbures présentant un diamètre d'au moins 0,5 µm étant d'au plus 7/100 µm 2 par unité de surface, et la microstructure étant à double phase avec une phase de martensite et une phase de ferrite, et la phase de martensite étant d'au moins 20 % en rapport de surface. 본 발명의 일 예에 따른 고내식 고강도 스테인리스강은, 중량 %로, C: 0.01 ~ 0.1%, N: 0.01 ~ 0.1%, Si: 0.01 ~ 1.0%, Mn: 0.01 ~ 3.0%, Cr: 10.0 ~ 20.0%, Al: 0.001 ~ 1.0%, P: 0.05% 이하, S: 0.01% 이하, 나머지는 Fe 및 기타 불가피한 불순물을 포함하고, 직경이 0.5㎛ 이상인 탄화물의 분포가 단위면적당 7개/100㎛2 이하이고, 미세조직이 마르텐사이트상과 페라이트상 2상이며, 상기 마르텐사이트상이 면적률로 20%이상인, 고내식 고강도 스테인리스강을 제공할 수 있다.