EP 4343013 A1 20240327 - AUSTENITIC STAINLESS STEEL AND MANUFACTURING METHOD THEREOF
Title (en)
AUSTENITIC STAINLESS STEEL AND MANUFACTURING METHOD THEREOF
Title (de)
AUSTENITISCHER EDELSTAHL UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
ACIER INOXYDABLE AUSTÉNITIQUE ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- KR 20210080002 A 20210621
- KR 2022008454 W 20220615
Abstract (en)
Disclosed are aa austenitic stainless steel free of surface cracks and having excellent surface roughness in a bent portion and a manufacturing method thereof.The austenitic stainless steel according to an embodiment of the present disclosure includes, in percent by weight (wt%), 0.005 to 0.03% of C, 0.1 to 1% of Si, 0.1 to 2% of Mn, 6 to 12% of Ni, 16 to 20% of Cr, 0.01 to 0.2% of N, 0.25% or less of Nb, and the balance of Fe and inevitable impurities, wherein an average grain size (d) of a central portion in a thickness direction is 5 µm or less, and a martensite area fraction measured in the bent portion after a 180° bending test is 10% or less.
IPC 8 full level
C22C 38/58 (2006.01); C21D 8/02 (2006.01); C22C 38/00 (2006.01); C22C 38/48 (2006.01)
CPC (source: EP KR)
C21D 6/004 (2013.01 - EP); C21D 6/02 (2013.01 - EP); C21D 8/0205 (2013.01 - EP); C21D 8/0226 (2013.01 - EP KR); C21D 8/0236 (2013.01 - EP KR); C21D 8/0263 (2013.01 - EP); C21D 8/0273 (2013.01 - EP); 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 38/40 (2013.01 - EP); C22C 38/42 (2013.01 - EP); C22C 38/44 (2013.01 - EP); C22C 38/48 (2013.01 - EP KR); C22C 38/58 (2013.01 - EP 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 4343013 A1 20240327; CN 117529571 A 20240206; JP 2024522170 A 20240611; KR 20220169655 A 20221228; WO 2022270814 A1 20221229
DOCDB simple family (application)
EP 22828661 A 20220615; CN 202280043970 A 20220615; JP 2023575582 A 20220615; KR 20210080002 A 20210621; KR 2022008454 W 20220615