EP 4361305 A1 20240501 - AUSTENITIC STAINLESS STEEL AND METHOD FOR MANUFACTURING SAME
Title (en)
AUSTENITIC STAINLESS STEEL AND METHOD FOR MANUFACTURING SAME
Title (de)
AUSTENITISCHER EDELSTAHL UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
ACIER INOXYDABLE AUSTÉNITIQUE ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- KR 20210108635 A 20210818
- KR 2022008906 W 20220623
Abstract (en)
Disclosed is an austenitic stainless steel including, in percent by weight (wt%), 0.005 to 0.03% of C, 0.1 to 1% of Si, 0.1 to 2% of Mn, 0.01 to 0.4 of Cu, 0.01 to 0.2 of Mo, 6 to 9% of Ni, 16 to 19% of Cr, 0.01 to 0.2% of N, and the balance of Fe and inevitable impurities, wherein an austenitic stability parameter (ASP) value calculated by 551-462(C+N)-9.2Si-8.1Mn-13.7Cr-29(Ni+Cu)-18.5Mo is from 30 to 60, a [100*N]/[Ni+Cu] value is 1.4 or more, an average grain size is less than 5 µm, and a fraction (%) of grains with a grain size of 5 µm or more is less than 10%.
IPC 8 full level
C22C 38/58 (2006.01); C21D 8/02 (2006.01); C22C 38/00 (2006.01); C22C 38/44 (2006.01); C23G 1/02 (2006.01)
CPC (source: EP KR)
C21D 1/26 (2013.01 - EP); C21D 6/004 (2013.01 - EP); C21D 8/0205 (2013.01 - EP); C21D 8/0226 (2013.01 - KR); C21D 8/0236 (2013.01 - EP KR); C21D 8/0273 (2013.01 - EP KR); C21D 9/46 (2013.01 - EP); C22C 38/001 (2013.01 - EP KR); C22C 38/02 (2013.01 - EP); C22C 38/04 (2013.01 - EP); C22C 38/42 (2013.01 - EP); C22C 38/44 (2013.01 - EP KR); C22C 38/58 (2013.01 - EP KR); C23G 1/02 (2013.01 - KR); C21D 2211/001 (2013.01 - EP KR)
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 4361305 A1 20240501; CN 117813413 A 20240402; JP 2024529999 A 20240814; KR 20230026705 A 20230227; WO 2023022351 A1 20230223
DOCDB simple family (application)
EP 22858593 A 20220623; CN 202280055970 A 20220623; JP 2024506270 A 20220623; KR 20210108635 A 20210818; KR 2022008906 W 20220623