公开(公告)号：US20170283894A1

公开(公告)日：2017-10-05

申请号：US15529263

申请日：2015-04-30

申请人： POSCO

发明人： Soo-Ho PARK ,  Jae-Hong SHIM

IPC分类号： C21D9/00 ,  C22C38/06 ,  C22C38/04 ,  C21D6/00 ,  C22C38/00 ,  B22D27/04 ,  C21D8/02 ,  C22C38/28 ,  C22C38/02

CPC分类号： C21D9/0081 ,  B22D11/002 ,  B22D27/04 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/021 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28

摘要： Ferritic stainless steel having a high degree of ductility and a method for manufacturing the ferritic stainless steel are provided. The stainless steel includes, by wt %, C: 0.005% to 0.1%, Si: 0.01% to 2.0%, Mn: 0.01% to 1.5%, P: 0.05% or less, S: 0.005% or less, Cr: 10% to 30%, Ti: 0.005% to 0.5%, Al: 0.01% to 0.15%, N: 0.005% to 0.03%, and the balance of Fe and inevitable impurities, wherein the ferritic stainless steel includes 3.5×106 or fewer particles of an independent Ti(CN) precipitate per square millimeter (mm2) of ferrite matrix.