EP 2103704 A1 20090923 - Hot-rolled long product and method for its manufacture
Title (en)
Hot-rolled long product and method for its manufacture
Title (de)
Warmgewalztes Langprodukt und Verfahren zu dessen Herstellung
Title (fr)
Produit longitudinal laminé à chaud et son procédé de fabrication
Publication
Application
Priority
EP 08004335 A 20080310
Abstract (en)
Hot-rolled longitudinal product contains (in wt.%) 0.20-0.25 carbon, 0.90-1.35 silicon, up to 0.20 nickel, up to 0.50 molybdenum, 0.04-0.25 sulfur, up to 0.01 aluminum, up to 0.035 phosphorus, up to 0.0008 boron, up to 0.02 titanium, up to 0.3 lead, up to 0.3 bismuth, up to 1.93 manganese, up to 4.0 chromium, up to 0.02 nitrogen and up to 0.01 oxygen bound in oxidic inclusions. Manganese content - 1.72 sulfur content 1.50% and chromium content + (manganese content - 1.72 sulfur content) 2.6 wt.%. The product has the following constituents: 50-90% bainite, up to 50% martensite, up to 10% ferrite and up to 10% residual austenite. An independent claim is also included for a method for the production of a hot-rolled longitudinal product.
Abstract (de)
Ein warmgewalztes Langprodukt weist Gewichtsanteile von 0.20 bis 0.25% Kohlenstoff, 0.90 bis 1.35% Silizium, bis zu 0.20% Nickel, 0.1 bis 0.5% Molybdän, 0.04 bis 0.25% Schwefel, bis zu 0.01% Aluminium, bis zu 0.035% Phosphor, bis zu 0.0008% Bor, bis zu 0.02% Titan, bis zu 0.3% Blei, bis zu 0.3% Wismut, bis zu 0.02% Stickstoff, bis zu 1.93% Mangan bis zu 4.0% Chrom bis zu 0.02% Stickstoff und bis zu 0.01% in oxidischen Einschlüssen gebundener Sauerstoff sowie weitere stahlübliche Beimengungen auf, wobei (Mangangehalt-1.72 Schwefelgehalt) < 1.50% und Chromgehalt + (Mangangehalt - 1.72 Schwefelgehalt) > 2.6 Gew.-% ist Es liegen folgende Gefügebestandteile vor: 50 bis 90% Bainit, bis 50% Martensit, bis zu 10% Ferrit und bis zu 10% Restaustenit.
IPC 8 full level
C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/18 (2006.01)
CPC (source: EP)
C21D 6/002 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/0226 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/18 (2013.01); C21D 2211/002 (2013.01); C21D 2211/004 (2013.01); C21D 2211/008 (2013.01)
Citation (applicant)
- WO 9622396 A1 19960725 - BRITISH STEEL PLC [GB], et al
- CN 1477226 A 20040225 - UNIV TSINGHUA [CN]
- EP 0845544 A1 19980603 - ASCOMETAL SA [FR]
- DE 102005052069 A1 20070503 - SAARSTAHL AG [DE]
Citation (search report)
- [A] US 2003084965 A1 20030508 - NISHI TAKAYUKI [JP], et al
- [A] US 5922145 A 19990713 - WATARI KOJI [JP], et al
- [A] US 2006144483 A1 20060706 - BEGUINOT JEAN [FR], et al
- [A] EP 0903418 A1 19990324 - SUMITOMO METAL IND [JP]
- [A] US 2006162825 A1 20060727 - BEGUINOT JEAN [FR], et al
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 MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 2103704 A1 20090923; EP 2103704 B1 20120711; ES 2391312 T3 20121123; PL 2103704 T3 20121231; SI 2103704 T1 20121130
DOCDB simple family (application)
EP 08004335 A 20080310; ES 08004335 T 20080310; PL 08004335 T 20080310; SI 200830770 T 20080310