EP 3666917 B1 20210707 - FERRITIC STAINLESS-STEEL SHEET AND METHOD FOR MANUFACTURING SAME
Title (en)
FERRITIC STAINLESS-STEEL SHEET AND METHOD FOR MANUFACTURING SAME
Title (de)
FERRITISCHES ROSTFREIES STAHLBLECH UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
TÔLE EN ACIER INOXYDABLE À BASE DE FERRITE, ET PROCÉDÉ DE FABRICATION DE CELLE-CI
Publication
Application
Priority
- JP 2017209061 A 20171030
- JP 2018038400 W 20181016
Abstract (en)
[origin: EP3666917A1] The present invention provides a ferritic stainless steel sheet which has more excellent toughness and excellent corrosion resistance, and a method for manufacturing the same. A ferritic stainless steel sheet has a composition containing C: 0.001 to 0.020%, Si: 0.05 to 0.35%, Mn: 0.05 to 1.00%, P: 0.04% or less, S: 0.01% or less, Al: 0.001 to 0.300%, Cr: 10.0 to 13.0%, Ni: 0.75 to 1.50%, Ti: 0.05 to 0.35%, and N: 0.001 to 0.020%, with the balance being Fe and inevitable impurities, in which γ<sub>I</sub>[%] represented by formula (1) below is 65% or more, and a metal structure has an average crystal grain size of 45 µm or less:γI%=24Ni+12Mn+6Cu−18Si−12Cr−12Mo+188where Ni, Mn, Cu, Si, Cr, and Mo represent contents of the respective elements (percent by mass), and an element not contained represents 0. The ferritic stainless steel sheet is manufactured by subjecting a steel slab having the composition to hot rolling, and performing hot-rolled sheet annealing at 750 to 1,050°C.
IPC 8 full level
C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/50 (2006.01); C22C 38/54 (2006.01)
CPC (source: EP KR US)
C21D 6/00 (2013.01 - EP); C21D 6/004 (2013.01 - US); C21D 6/005 (2013.01 - US); C21D 6/007 (2013.01 - US); C21D 6/008 (2013.01 - US); C21D 8/02 (2013.01 - EP); C21D 8/0205 (2013.01 - KR US); C21D 8/0226 (2013.01 - KR US); C21D 8/0263 (2013.01 - US); C21D 8/0278 (2013.01 - KR); C21D 9/46 (2013.01 - EP KR US); C22C 38/00 (2013.01 - EP); C22C 38/001 (2013.01 - KR US); C22C 38/002 (2013.01 - US); C22C 38/02 (2013.01 - US); C22C 38/04 (2013.01 - US); C22C 38/06 (2013.01 - US); C22C 38/42 (2013.01 - KR US); C22C 38/44 (2013.01 - KR US); C22C 38/46 (2013.01 - KR US); C22C 38/48 (2013.01 - KR US); C22C 38/50 (2013.01 - EP KR US); C22C 38/52 (2013.01 - US); C22C 38/54 (2013.01 - EP KR US); C22F 1/002 (2013.01 - EP); C22F 1/08 (2013.01 - EP); C21D 2211/005 (2013.01 - KR US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3666917 A1 20200617; EP 3666917 A4 20200805; EP 3666917 B1 20210707; CN 111295458 A 20200616; ES 2883114 T3 20211207; JP 6536763 B1 20190703; JP WO2019087761 A1 20191114; KR 102603113 B1 20231116; KR 20200057760 A 20200526; KR 20220065904 A 20220520; MX 2020004428 A 20200806; US 2020347475 A1 20201105; WO 2019087761 A1 20190509
DOCDB simple family (application)
EP 18873329 A 20181016; CN 201880070416 A 20181016; ES 18873329 T 20181016; JP 2018038400 W 20181016; JP 2019505000 A 20181016; KR 20207011817 A 20181016; KR 20227016128 A 20181016; MX 2020004428 A 20181016; US 201816758551 A 20181016