Title:
Ti content ferrite series stainless steel plate for exhaust flange parts, and a manufacturing method
Document Type and Number:
Japanese Patent JP6261648
Kind Code:
B2
Abstract:
[Problem] To provide a steel sheet having a large gauge thickness of a Ti-containing ferritic stainless steel for an exhaust pipe flange member that is excellent in toughness and workability. [Solution] A Ti-containing ferritic stainless steel sheet for an exhaust pipe flange member, having a chemical composition containing, in terms of percentage by mass, from 0.003 to 0.030% of C, 2.0% or less of S i, 2.0% or less of Mn, 0.050% or less of P, 0.040% or less of S, from 10.0 to 19.0% of Cr, 0.030% or less of N, from 0.07 to 0.50% of Ti, from 0.010 to 0.20% of Al, from 0 to 1.50% of Mo, and from 0 to 0.0030% of B, with the balance of Fe and unavoidable impurities, having a K value of 150 or more, having a hardness of a sheet surface of 170 HV or less, and having a sheet thickness of from 5.0 to 11.0 mm. K value = -0.07×Cr - 6790×Free(C+N) - 1.44×d + 267. Herein, Free(C+N) corresponds to the solid-dissolved (C+N) concentration (% by mass), and d represents an average crystal grain diameter (µm).
Inventors:
Seiji Mitsunaga
Ebisu Hama
Yasuhiro Ehara
Imagawa Kazunari
Ebisu Hama
Yasuhiro Ehara
Imagawa Kazunari
Application Number:
JP2016098323A
Publication Date:
January 17, 2018
Filing Date:
May 16, 2016
Export Citation:
Assignee:
Nisshin Steel Co., Ltd.
International Classes:
C22C38/00; C21D8/02; C22C38/38
Domestic Patent References:
| JP2012140687A | ||||
| JP2015187290A | ||||
| JP6022097B1 |
Foreign References:
| WO2013085005A1 |
Attorney, Agent or Firm:
Komatsu Taka
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