EP 1561834 B1 20110420 - DUPLEX STAINLESS STEEL AND METHOD FOR PRODUCTION THEREOF
Title (en)
DUPLEX STAINLESS STEEL AND METHOD FOR PRODUCTION THEREOF
Title (de)
DUPLEX-EDELSTAHL UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
ACIER NON OXYDABLE DUPLEX ET PROCEDE DE PRODUCTION CORRESPONDANT
Publication
Application
Priority
- JP 2004011070 W 20040803
- JP 2003289418 A 20030807
Abstract (en)
[origin: EP1561834A1] A duplex stainless steel containing C, Si, Mn, P, S, Al, Ni, Cr, Mo, N (nitrogen, O (oxygen),Ca, Mg, Cu, B, and W, and the balance Fe and impurities, where a number of oxide-based inclusions, which have a total content of Ca and Mg of 20 to 40 % by mass and also have a long diameter of not less than 7 mu m, is not more than a 10 per 1 mm<2> of the cross section perpendicular to the working direction, or further, the number of oxide-based inclusions, which have a content of S of not less than 15% by mass and also have a long diameter of not less than 1 mu m, is not more than 10 per 0.1 mm<2> of the cross section perpendicular to the working direction.. Particularly, the contents of Cu, B and W are desirably 0.2 to 2%, 0:001 to 0.01%, and 0.1 to 4% by mass, respectively. <IMAGE>
IPC 8 full level
C22C 38/00 (2006.01); C21C 7/00 (2006.01); C21C 7/06 (2006.01); C21C 7/064 (2006.01); C21C 7/068 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP KR)
C21C 7/0087 (2013.01 - EP); C21C 7/06 (2013.01 - EP); C21C 7/064 (2013.01 - EP); C22C 38/001 (2013.01 - EP); 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)
Designated contracting state (EPC)
GB IT SE
DOCDB simple family (publication)
EP 1561834 A1 20050810; EP 1561834 A4 20070711; EP 1561834 B1 20110420; AU 2004262702 A1 20050217; AU 2004262702 B2 20070503; BR PI0406423 A 20051004; BR PI0406423 B1 20121211; CN 100427627 C 20081022; CN 1701126 A 20051123; JP 4155300 B2 20080924; JP WO2005014872 A1 20061005; KR 100661328 B1 20061227; KR 20060024316 A 20060316; NO 20052266 D0 20050510; NO 20052266 L 20050706; NO 336117 B1 20150518; WO 2005014872 A1 20050217
DOCDB simple family (application)
EP 04748203 A 20040803; AU 2004262702 A 20040803; BR PI0406423 A 20040803; CN 200480000968 A 20040803; JP 2004011070 W 20040803; JP 2005512929 A 20040803; KR 20057004913 A 20050322; NO 20052266 A 20050510