EP 4119693 A1 20230118 - LOW-COST AUSTENITIC STAINLESS STEEL HAVING HIGH STRENGTH AND HIGH FORMABILITY, AND METHOD FOR MANUFACTURING SAME
Title (en)
LOW-COST AUSTENITIC STAINLESS STEEL HAVING HIGH STRENGTH AND HIGH FORMABILITY, AND METHOD FOR MANUFACTURING SAME
Title (de)
KOSTENGÜNSTIGER AUSTENITISCHER EDELSTAHL MIT HOHER FESTIGKEIT UND HOHER VERFORMBARKEIT UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
ACIER AUSTÉNITIQUE INOXYDABLE PEU COÛTEUX PRÉSENTANT UNE RÉSISTANCE ÉLEVÉE ET UNE GRANDE APTITUDE AU FAÇONNAGE ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- KR 20200048614 A 20200422
- KR 2021001345 W 20210202
Abstract (en)
Disclosed are a low-cost austenitic stainless steel having high strength and high formability and a method for manufacturing same. The low-cost austenitic stainless steel having high strength and high formability according to an embodiment includes, greater than 0% and at most 0.08% of C, 0.2 to 0.25% of N, 0.8 to 1.5% of Si, 8.0 to 9.5% of Mn, 15.0 to 16.5% of Cr, greater than 0% and at most 1.0% of Ni, 0.8 to 1.8% of Cu, and the remainder of Fe and other unavoidable impurities and satisfies Expressions (1) to (4) below. (1) Ni+0.47Mn+15N ≥ 7.5 (2) 23(C+N)+1.3Si+0.24(Cr+Ni+Cu)+0.1Mn ≥ 12 (3) 551-462(C+N)-9.2Si-8.1Mn-13.7Cr-29(Ni+Cu) ≤ 70 (4) 11 ≤ 1+45C-5Si+0.09Mn+2.2Ni-0.28Cr-0.67Cu+88.6N ≤ 17Here, C, N, Si, Mn, Cr, Ni, and Cu represent contents (wt%) of the elements, respectively.
IPC 8 full level
C22C 38/58 (2006.01); C21D 8/02 (2006.01); C22C 38/00 (2006.01); C22C 38/42 (2006.01)
CPC (source: EP KR US)
C21D 1/26 (2013.01 - EP); C21D 6/004 (2013.01 - EP); C21D 8/0205 (2013.01 - EP US); C21D 8/0226 (2013.01 - EP KR US); C21D 8/0236 (2013.01 - EP KR US); C21D 8/0242 (2013.01 - EP); C21D 8/0247 (2013.01 - EP); 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 US); C22C 38/02 (2013.01 - EP US); C22C 38/20 (2013.01 - EP); C22C 38/38 (2013.01 - EP); C22C 38/42 (2013.01 - EP KR US); C22C 38/58 (2013.01 - EP KR US); C21D 2211/001 (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
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4119693 A1 20230118; EP 4119693 A4 20240424; CN 115398022 A 20221125; CN 115398022 B 20231128; JP 2023522999 A 20230601; JP 7395769 B2 20231211; KR 102385472 B1 20220413; KR 20210130426 A 20211101; US 2023142021 A1 20230511; WO 2021215630 A1 20211028
DOCDB simple family (application)
EP 21793437 A 20210202; CN 202180028609 A 20210202; JP 2022564367 A 20210202; KR 20200048614 A 20200422; KR 2021001345 W 20210202; US 202117918014 A 20210202