EP 2248919 A1 20101110 - High corrosion-resistant, high-strength and non-magnetic stainless steel
Title (en)
High corrosion-resistant, high-strength and non-magnetic stainless steel
Title (de)
Hoch korrosionsbeständiger, hochfester und nichtmagnetischer Edelstahl
Title (fr)
Acier inoxydable non magnétique à haute résistance à la corrosion
Publication
Application
Priority
- JP 2009108189 A 20090427
- JP 2009123661 A 20090522
- JP 2010015591 A 20100127
Abstract (en)
The present invention provides a high corrosion-resistant, high-strength and non-magnetic stainless steel containing: C: 0.01% to 0.05% by mass, Si: 0.05% to 0.50% by mass, Mn: more than 16.0% by mass but 19.0% by mass or less, P: 0.040% by mass or less, S: 0.010% by mass or less, Cu: 0.50% to 0.80% by mass, Ni: 3.5% to 5.0% by mass, Cr: 17.0% to 21.0% by mass, Mo: 1.80% to 3.50% by mass, B: 0.0010% to 0.0050% by mass, O: 0.010% by mass or less, and N: 0.45% to 0.65% by mass, with the balance substantially composed of Fe and unavoidable impurities, the steel satisfying the following equations (1) to (4): Cr + 3.3 × Mo + 16 × N ‰¥ 30 Cr / C ‰¥ 330 Cr / Mn > 1.0 Ni + 3 × Cu / Cr + Mo > 0.25 wherein [Cr], [Mo], [N], [C], [Mn], [Ni] and [Cu] represent the content of Cr, the content of Mo, the content of N, the content of C, the content of Mn, the content of Ni, and the content of Cu in the steel in terms of mass %, respectively.
IPC 8 full level
C21D 8/12 (2006.01); C21D 9/22 (2006.01); C22C 38/04 (2006.01); C22C 38/18 (2006.01); C22C 38/20 (2006.01)
CPC (source: EP US)
C21D 8/12 (2013.01 - EP US); C21D 9/22 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/18 (2013.01 - EP US); C22C 38/20 (2013.01 - EP US)
Citation (applicant)
- JP S53117618 A 19781014 - NIPPON YAKIN KOGYO CO LTD
- JP S59104455 A 19840616 - NIPPON STEEL CORP, et al
- JP S59205452 A 19841121 - NIPPON YAKIN KOGYO CO LTD, et al
- JP S61143563 A 19860701 - NIPPON STEEL CORP
- JP S61170545 A 19860801 - NIPPON STEEL CORP, et al
- JP S61238943 A 19861024 - KOBE STEEL LTD
- JP 2004052097 A 20040219 - NIPPON SEISEN CO LTD
- JP 2004156086 A 20040603 - DAIDO STEEL CO LTD
Citation (search report)
- [X] WO 9116469 A1 19911031 - CARPENTER TECHNOLOGY CORP [US]
- [A] JP 2004156086 A 20040603 - DAIDO STEEL CO LTD
- [A] JP H02190444 A 19900726 - KOBE STEEL LTD
- [A] EP 1990439 A2 20081112 - DAIDO STEEL CO LTD [JP]
- [A] US 3904401 A 19750909 - MERTZ DAVID L, et al
Designated contracting state (EPC)
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 SE SI SK SM TR
Designated extension state (EPC)
AL BA ME RS
DOCDB simple family (publication)
EP 2248919 A1 20101110; EP 2248919 B1 20151021; CN 101921970 A 20101222; CN 101921970 B 20140312; JP 2011006776 A 20110113; JP 5526809 B2 20140618; US 2010272593 A1 20101028
DOCDB simple family (application)
EP 10004443 A 20100427; CN 201010159146 A 20100426; JP 2010015591 A 20100127; US 76639010 A 20100423