EP 0835946 B1 20011128 - Use of a weldable low-chromium ferritic cast steel, having excellent high-temperature strength
Title (en)
Use of a weldable low-chromium ferritic cast steel, having excellent high-temperature strength
Title (de)
Verwendung eines schweissbaren ferritischen Gussstahls mit niedrigem Chromgehalt und mit sehr gute Warmfestigkeit
Title (fr)
Utilisation d'un acier de moulage ferritique soudable, à basse teneur en chrome et présentant une haute résistance mécanique aux températures élevées
Publication
Application
Priority
JP 26852996 A 19961009
Abstract (en)
[origin: EP0835946A1] This invention relates to low-Cr ferritic cast steels having excellent high-temperature strength, weldability, oxidation resistance and high-temperature corrosion resistance. These low-Cr ferritic cast steels consist essentially of, on a weight percentage basis, 0.03 to 0.12% C, 0.03 to 0.7% Si, 0.02 to 1% Mn, up to 0.3% Co, up to 0.025% P, up to 0.015% S, 0.8 to 3% Cr, 0.01 to 1% Ni, 0.01 to 0.5% V, 0.1 to 3% W, 0.01 to 0.2% Nb, 0.001 to 0.05% Al, 0.0001 to 0.02% B, 0.001 to 0.05% N, up to 0.03% O, 0.0005 to 0.05% Mg, and the balance being iron and incidental impurities, provided that the Mg content satisfies the following inequality as expressed on a weight percentage basis: <MATH> As a result, they exhibit excellent weldability and markedly improved high-temperature strength.
IPC 1-7
IPC 8 full level
C22C 38/00 (2006.01); C22C 38/46 (2006.01); C22C 38/54 (2006.01)
CPC (source: EP)
C22C 38/46 (2013.01); C22C 38/54 (2013.01)
Designated contracting state (EPC)
CH DE FR GB LI
DOCDB simple family (publication)
EP 0835946 A1 19980415; EP 0835946 B1 20011128; DE 69708574 D1 20020110; DE 69708574 T2 20020704; JP 3572152 B2 20040929; JP H10121188 A 19980512
DOCDB simple family (application)
EP 97306432 A 19970822; DE 69708574 T 19970822; JP 26852996 A 19961009