Global Patent Index - EP 2027300 A2

EP 2027300 A2 2009-02-25 - STEEL COMPOSITIONS FOR SPECIAL USES

Title (en)

STEEL COMPOSITIONS FOR SPECIAL USES

Title (de)

STAHLZUSAMMENSETZUNGEN FÜR SPEZIELLE ANWENDUNGEN

Title (fr)

COMPOSITIONS D'ACIERS POUR USAGES SPECIAUX

Publication

EP 2027300 A2 (FR)

Application

EP 07788846 A

Priority

  • FR 2007000941 W
  • FR 0605133 A

Abstract (en)

[origin: WO2007141427A2] The invention concerns steels having excellent resistance over time, in a corrosive atmosphere due to oxidizing environments such as, for example, fumes or water vapour, under high pressure and/or temperature. The invention concerns a steel composition for special applications, said composition containing, by weight, about 1.8 to 11% of chromium (and preferably between about 2.3 and 10% of chromium), less than 1% of silicon, and between 0.20 and 0.45% of manganese. It has been found that it is possible to adjust the contents of the composition based on a predetermined model, selected to obtain substantially optimal properties with respect to corrosion in specific conditions of high temperature performances. Said model can involve as additive of as residue at least one element selected among molybdenum, tungsten, cobalt, and nickel.

IPC 8 full level (invention and additional information)

C22C 38/22 (2006.01)

CPC (invention and additional information)

C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/22 (2013.01); C22C 38/44 (2013.01); Y10S 148/909 (2013.01)

Citation (search report)

See references of WO 2007141427A3

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

Designated extension state (EPC)

HR

DOCDB simple family

WO 2007141427 A2 20071213; WO 2007141427 A3 20080731; AT 520796 T 20110915; AU 2007255279 A1 20071213; AU 2007255279 B2 20111013; BR PI0712148 A2 20120222; BR PI0712148 B1 20180911; CA 2654521 A1 20071213; CA 2654521 C 20141014; CN 101466859 A 20090624; CN 101466859 B 20120822; EA 015633 B1 20111031; EA 200870608 A1 20090428; EP 2027300 A2 20090225; EP 2027300 B1 20110817; EP 2027300 B8 20121114; ES 2371534 T3 20120104; FR 2902111 A1 20071214; FR 2902111 B1 20090306; HR P20110850 T1 20111231; JP 2009540118 A 20091119; KR 20090023475 A 20090304; MX 2008015740 A 20090302; PL 2027300 T3 20120131; UA 97368 C2 20120210; US 2010307430 A1 20101209; US 9005520 B2 20150414