2 FERRITIC-AUSTENITIC TWO-PHASE STAINLESS STEEL AND THE METHOD FOR MANUFACTURING THE SAME

In the present specification, ferritic stainless steel and a method for manufacturing the same, which can improve elongation while omitting top annealing are disclosed. The ferritic stainless steel according to an embodiment of the present invention comprises 0.01 wt% or more and 0.1 wt% or less of...

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Bibliographische Detailangaben
Hauptverfasser: JO GYUJIN, LEE JAEHWA
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:In the present specification, ferritic stainless steel and a method for manufacturing the same, which can improve elongation while omitting top annealing are disclosed. The ferritic stainless steel according to an embodiment of the present invention comprises 0.01 wt% or more and 0.1 wt% or less of C, 0.01 wt% or more and 1.0 wt% or less of Si, 0.01 wt% or more and 1.5 wt% or less of Mn, more than 0 wt% and 0.05 wt% or less of P, more than 0 wt% and 0.005 wt% or less of S, 13.0 wt% or more and 18.0 wt% or less of Cr, 0.005 wt% or more and 0.1 wt% or less of N, 0.005 wt% or more and 0.2 wt% or less of Al, 0.08 wt% or more and 0.15 wt% or less of Ni, and the balance Fe (iron) and other unavoidable impurities. 본 명세서에서는, 상소둔을 생략하면서도 연신율을 향상시킨 페라이트계 스테인리스강 및 그 제조방법을 개시한다. 본 발명의 일 실시예에 따른 페라이트계 스테인리스강은, 중량%로, C: 0.01% 이상 0.1% 이하, Si: 0.01% 이상 1.0% 이하, Mn: 0.01% 이상 1.5% 이하, P: 0% 초과 0.05% 이하, S: 0% 초과 0.005% 이하, Cr: 13.0% 이상 18.0% 이하, N: 0.005% 이상 0.1% 이하, Al: 0.005% 이상 0.2% 이하, Ni: 0.08% 이상 0.15% 이하, 잔부 Fe(철) 및 기타 불가피한 불순물을 포함할 수 있다.