EP 4257719 A1 20231011 - FERRITIC STAINLESS STEEL WITH IMPROVED GRAIN BOUNDARY EROSION, AND MANUFACTURING METHOD THEREOF
Title (en)
FERRITIC STAINLESS STEEL WITH IMPROVED GRAIN BOUNDARY EROSION, AND MANUFACTURING METHOD THEREOF
Title (de)
FERRITISCHER EDELSTAHL MIT VERBESSERTER KORNGRENZENEROSION UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
ACIER INOXYDABLE FERRITIQUE PRÉSENTANT UNE ÉROSION DE JOINT DE GRAIN AMÉLIORÉE, ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- KR 20200167400 A 20201203
- KR 2021015393 W 20211029
Abstract (en)
Disclosed is a ferritic stainless steel with reduced grain boundary erosion.A ferritic stainless steel with reduced grain boundary erosion according to an embodiment includes, in percent by weight (wt%), 0.005 to 0.1% of C, 0.01 to 1.0% of Si, 0.01 to 1.5% of Mn, 13 to 18% of Cr, 0.005 to 0.1% of N, 0.005 to 0.2% of Al, 0.005 to 0.1% of Ni, 0.003% or less of Mo, 0.05% or less of P, 0.005% or less of S, and the remainder being Fe and impurities, and satisfies an Ac1, defined by Formula (1) below, of 900 or more and 990 or less: Ac1=36Cr+90Si+76Mo+760Al+350−800C+1300N+150Ni+50Mn (wherein C, N, Si, Mn, Cr, Ni, Al, Mn, and Mo represent a content (wt%) of each element).
IPC 8 full level
C22C 38/04 (2006.01); C21D 8/02 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/12 (2006.01)
CPC (source: EP KR US)
C21D 1/26 (2013.01 - EP); C21D 6/002 (2013.01 - EP); C21D 8/0205 (2013.01 - EP); C21D 8/021 (2013.01 - EP); C21D 8/0226 (2013.01 - EP KR US); C21D 8/0263 (2013.01 - EP US); C21D 8/0273 (2013.01 - EP KR US); C21D 9/46 (2013.01 - EP); C22C 38/001 (2013.01 - EP KR US); C22C 38/02 (2013.01 - EP KR US); C22C 38/04 (2013.01 - EP KR US); C22C 38/06 (2013.01 - EP KR US); C22C 38/12 (2013.01 - KR); C22C 38/40 (2013.01 - EP); C22C 38/44 (2013.01 - US); C21D 2211/005 (2013.01 - EP 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
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4257719 A1 20231011; CN 116829755 A 20230929; JP 2023551960 A 20231213; KR 102523533 B1 20230419; KR 20220078166 A 20220610; US 2024026507 A1 20240125; WO 2022119134 A1 20220609
DOCDB simple family (application)
EP 21900822 A 20211029; CN 202180087874 A 20211029; JP 2023534049 A 20211029; KR 20200167400 A 20201203; KR 2021015393 W 20211029; US 202118265167 A 20211029