EP 0914485 B1 20020508 - AUSTENITIC NICKEL-CHROMIUM STEEL ALLOYS
Title (en)
AUSTENITIC NICKEL-CHROMIUM STEEL ALLOYS
Title (de)
AUSTENITISCHE NICKEL-CHROM-STAHLLEGIERUNG
Title (fr)
ALLIAGE AUSTENITIQUE D'ACIER AU NICKEL-CHROME
Publication
Application
Priority
- DE 19629977 A 19960725
- EP 9703975 W 19970723
Abstract (en)
[origin: DE19629977A1] A steel alloy contains 0.3 to 1.0 % carbon, 0.2 to 2.5 % silicium, up to 0.8 % manganese, 30.0 to 48.0 % nickel, 16.0 to 22.0 % chromium, 0.5 to 18.0 % cobalt, 1.5 to 4 % molybdenum, 0.2 to 0.6 %niobium, 0.1 to 0.5 % titanium, 0.1 to 0.6 % zirconium, 0.1 to 1.5 % tantalum and 0.1 to 1.5 % hafnium, the remaining percentage being made up of over 20 % iron when the cobalt content equals or exceeds 10 % and of over 30 % iron when the cobalt content is lower than 10 %. The steel alloy is particularly useful as heat-resistant and heating resistant materials for parts, in particular pipes of petrochemical cracking furnaces for producing ethylene or synthesis gas.
IPC 1-7
IPC 8 full level
C22C 38/00 (2006.01); C22C 19/05 (2006.01); C22C 30/00 (2006.01); C22C 38/44 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01); C22C 38/52 (2006.01)
CPC (source: EP US)
C22C 30/00 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DE 19629977 A1 19980129; DE 19629977 C2 20020919; CA 2261736 A1 19980205; CA 2261736 C 20050614; DE 59707227 D1 20020613; EP 0914485 A1 19990512; EP 0914485 B1 20020508; JP 2000513767 A 20001017; JP 3710097 B2 20051026; US 2001001399 A1 20010524; US 6409847 B2 20020625; WO 9804757 A1 19980205
DOCDB simple family (application)
DE 19629977 A 19960725; CA 2261736 A 19970723; DE 59707227 T 19970723; EP 9703975 W 19970723; EP 97937513 A 19970723; JP 50847098 A 19970723; US 23041799 A 19990510