Global Patent Index - EP 2307586 A1

EP 2307586 A1 20110413 - STEEL ALLOY FOR FERRITIC STEEL HAVING EXCELLENT CREEP STRENGTH AND OXIDATION RESISTANCE AT ELEVATED USAGE TEMPERATURES

Title (en)

STEEL ALLOY FOR FERRITIC STEEL HAVING EXCELLENT CREEP STRENGTH AND OXIDATION RESISTANCE AT ELEVATED USAGE TEMPERATURES

Title (de)

STAHLLEGIERUNG FÜR EINEN FERRITISCHEN STAHL MIT AUSGEZEICHNETER ZEITSTANDFESTIGKEIT UND OXIDATIONSBESTÄNDIGKEIT BEI ERHÖHTEN EINSATZTEMPERATUREN

Title (fr)

ALLIAGE D'ACIER POUR UN ACIER FERRITIQUE PRÉSENTANT UNE EXCELLENTE RÉSISTANCE AU FLUAGE ET UNE EXCELLENTE RÉSISTANCE À L'OXYDATION À DES TEMPÉRATURES D'UTILISATION ACCRUES

Publication

EP 2307586 A1 20110413 (DE)

Application

EP 09775941 A 20090703

Priority

  • DE 2009000953 W 20090703
  • DE 102008034817 A 20080723
  • DE 102009031576 A 20090630

Abstract (en)

[origin: WO2010009700A1] The invention relates to a steel alloy for steel that is ferritic at the usage temperature, having excellent creep strength and corrosion resistance, particularly at usage temperatures = 750ºC, having the following chemical composition (in wt. %): C = 1.0%; Si = 1.0%; Mn = 1.0%; P max. 0.05%; S max. 0.01%; 2 = Al = 12%; 3 = Cr < 16%; 2 = Ni = 10% and/or 2 = CO = 10%, where 2 = NI+Co = [%Cr] + 2,07x[%Al] >= 0.95x([%Ni] + [%Co]); N max. 0.0200%; the remainder being iron with steel production-related impurities, with the optional addition of one or more elements of V, Ti, Ta, Zr and Nb; with the optional addition of one or both elements of Mo and W; with the optional addition of one or more elements of Hf, B, Se, Y, Te, Sb, La and Zr in the range of a cumulative content of < 0.1%, with the proviso that the steel structure comprises uniformly distributed coherent precipitations based on a chromium-stabilized (Ni, Co)Al-B2 intermetallic order phase.

IPC 8 full level

C22C 38/06 (2006.01); C22C 38/40 (2006.01); C22C 38/52 (2006.01)

CPC (source: EP US)

C22C 38/06 (2013.01 - EP US); C22C 38/40 (2013.01 - EP US); C22C 38/52 (2013.01 - EP US); Y10T 428/12014 (2015.01 - EP US)

Citation (search report)

See references of WO 2010009700A1

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 RS

DOCDB simple family (publication)

WO 2010009700 A1 20100128; AR 072594 A1 20100908; CN 102137948 A 20110727; CN 102137948 B 20140611; DE 102009031576 A1 20100325; EP 2307586 A1 20110413; EP 2307586 B1 20181010; JP 2011528752 A 20111124; JP 5844150 B2 20160113; US 2011189496 A1 20110804; US 9080230 B2 20150714

DOCDB simple family (application)

DE 2009000953 W 20090703; AR P090102788 A 20090722; CN 200980128791 A 20090703; DE 102009031576 A 20090630; EP 09775941 A 20090703; JP 2011519034 A 20090703; US 200913055345 A 20090703