- 专利标题: FERRITIC STAINLESS STEEL HAVING EXCELLENT DUCTILITY AND METHOD FOR MANUFACTURING SAME
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申请号: US15529263申请日: 2015-04-30
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公开(公告)号: US20170283894A1公开(公告)日: 2017-10-05
- 发明人: Soo-Ho PARK , Jae-Hong SHIM
- 申请人: POSCO
- 优先权: KR10-2014-0190545 20141226; KR10-2015-0061378 20150430
- 国际申请: PCT/KR2015/004410 WO 20150430
- 主分类号: C21D9/00
- IPC分类号: C21D9/00 ; C22C38/06 ; C22C38/04 ; C21D6/00 ; C22C38/00 ; B22D27/04 ; C21D8/02 ; C22C38/28 ; C22C38/02
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.