EP 2889390 A4 20160511 - HIGHLY STRONG, HIGHLY TOUGH AND HIGHLY CORROSION-RESISTANT MARTENSITIC STAINLESS STEEL
Title (en)
HIGHLY STRONG, HIGHLY TOUGH AND HIGHLY CORROSION-RESISTANT MARTENSITIC STAINLESS STEEL
Title (de)
HOCHFESTER, HOCHZÄHER UND HOCH KORROSIONSBESTÄNDIGER MARTENSITISCHER EDELSTAHL
Title (fr)
ACIER INOXYDABLE MARTENSITIQUE À HAUTE RÉSISTANCE, HAUTE TÉNACITÉ ET HAUTE RÉSISTANCE À LA CORROSION
Publication
Application
Priority
- JP 2012184802 A 20120824
- JP 2013062004 W 20130424
Abstract (en)
[origin: EP2889390A1] It is an object of the present invention to provide a high performance-stainless steel exhibiting a corrosion resistance even under a very severe corrosion environment at temperatures of equal to or higher than 180 °C, for example, 220 °C while maintaining a strength and a toughness by improving a corrosion resistance of a conventional martensitic stainless steel with high strength. The present invention provides a martensitic stainless steel containing, in mass %, C: 0.005 % to 0.05 %, Si: equal to or less than 1.0 %, Mn: equal to or less than 2.0 %, Cr: 16 to 18 %, Ni: 2.5 to 6.5 %, Mo: 1.5 to 3.5 %, W: equal to or less than 3.5 %, Cu: equal to or less than 3.5 %, V: 0.01 to 0.08 %, Sol.Al: 0.005 to 0.10 %, N: equal to or less than 0.05 %, and Ta: 0.01 to 0.06 %, and the balance Fe with inevitable impurities.
IPC 8 full level
C22C 38/00 (2006.01); C21D 6/00 (2006.01); C21D 8/00 (2006.01); C21D 8/02 (2006.01); C21D 9/08 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP US)
C21D 6/004 (2013.01 - EP US); C21D 6/005 (2013.01 - EP US); C21D 6/008 (2013.01 - EP US); C21D 8/005 (2013.01 - EP US); C21D 8/0263 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/004 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/42 (2013.01 - EP US); C22C 38/44 (2013.01 - EP US); C22C 38/46 (2013.01 - EP US); C22C 38/48 (2013.01 - EP US); C22C 38/58 (2013.01 - EP US)
Citation (search report)
- [XY] GB 1294336 A 19721025 - CARPENTER TECHNOLOGY CORP [US]
- [YA] JP 2008081793 A 20080410 - JFE STEEL KK
- [YA] JP H02243739 A 19900927 - SUMITOMO METAL IND
- [YA] JP H0375336 A 19910329 - NIPPON STEEL CORP
- [AP] EP 2565287 A1 20130306 - NIPPON STEEL & SUMITOMO METAL CORP [JP]
- [A] JP 2000178692 A 20000627 - NIPPON KOKAN KK
- [A] US 2007006945 A1 20070111 - MORI NOBUYUKI [JP], et al
- [AP] US 2012328897 A1 20121227 - OHE TARO [JP], et al
- See references of WO 2014030392A1
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
DOCDB simple family (publication)
EP 2889390 A1 20150701; EP 2889390 A4 20160511; EP 2889390 B1 20180418; BR 112015003178 A2 20180522; BR 112015003178 B1 20190424; JP 2014043595 A 20140313; JP 6045256 B2 20161214; US 2015191809 A1 20150709; US 2018002791 A1 20180104; WO 2014030392 A1 20140227
DOCDB simple family (application)
EP 13830674 A 20130424; BR 112015003178 A 20130424; JP 2012184802 A 20120824; JP 2013062004 W 20130424; US 201314421927 A 20130424; US 201715704461 A 20170914