EP 4265784 A1 20231025 - MARTENSITIC STAINLESS STEEL WITH IMPROVED STRENGTH AND CORROSION RESISTANCE, AND MANUFACTURING METHOD THEREFOR
Title (en)
MARTENSITIC STAINLESS STEEL WITH IMPROVED STRENGTH AND CORROSION RESISTANCE, AND MANUFACTURING METHOD THEREFOR
Title (de)
MARTENSITISCHER EDELSTAHL MIT VERBESSERTER FESTIGKEIT UND KORROSIONSBESTÄNDIGKEIT UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
ACIER INOXYDABLE MARTENSITIQUE AYANT UNE RÉSISTANCE ET UNE RÉSISTANCE À LA CORROSION AMÉLIORÉES, ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- KR 20200180359 A 20201221
- KR 2021017715 W 20211129
Abstract (en)
Disclosed is a martensitic stainless steel with improved strength and corrosion resistance. The disclosed martensitic stainless steel sheet comprises, in percent by weight (wt%), 0.3 to 0.5% of C, 0.01 to 0.025% of N, 0.3 to 0.5% of Si, 0.4 to 0.6 of Mn, 13.1 to 14.5% of Cr, 0.95 to 1.10% of Mo, 0.05 to 0.3% of V, 0.3 to 0.5% of Ni, 0.001 to 0.5% of Cu, and the balance being Fe and inevitable impurities, and satisfies Formula (1). Formula (1): 16.4 ≤ (Cr+3.3Mo+16N)*(Mo+V) ≤ 23.3, wherein Cr, N, Mo, and V denote the contents (wt%) of respective elements.
IPC 8 full level
C22C 38/46 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01)
CPC (source: EP KR US)
C21D 1/18 (2013.01 - EP US); C21D 1/22 (2013.01 - EP); C21D 1/25 (2013.01 - EP); C21D 1/26 (2013.01 - EP); C21D 6/004 (2013.01 - EP US); C21D 6/005 (2013.01 - US); C21D 6/008 (2013.01 - US); C21D 6/02 (2013.01 - EP); C21D 8/0205 (2013.01 - EP US); C21D 8/0226 (2013.01 - EP US); C21D 8/0236 (2013.01 - EP US); C21D 8/0247 (2013.01 - EP KR); C21D 8/0263 (2013.01 - EP US); C21D 8/0268 (2013.01 - US); C21D 9/0081 (2013.01 - US); C21D 9/46 (2013.01 - EP KR); C22C 38/001 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/42 (2013.01 - EP KR US); C22C 38/44 (2013.01 - EP KR US); C22C 38/46 (2013.01 - EP KR US); C21D 2211/004 (2013.01 - EP); C21D 2211/005 (2013.01 - EP); C21D 2211/008 (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 4265784 A1 20231025; EP 4265784 A4 20240925; CN 116745455 A 20230912; JP 2024500865 A 20240110; KR 20220089588 A 20220628; KR 20230123913 A 20230824; US 2024271240 A1 20240815; WO 2022139214 A1 20220630
DOCDB simple family (application)
EP 21911281 A 20211129; CN 202180091082 A 20211129; JP 2023537896 A 20211129; KR 20200180359 A 20201221; KR 2021017715 W 20211129; KR 20230107647 A 20230817; US 202118268557 A 20211129