EP 0747495 B1 20000119 - Niobium containing hot rolled steel sheet with high strength and good deep-drawing properties, and process for its manufacture
Title (en)
Niobium containing hot rolled steel sheet with high strength and good deep-drawing properties, and process for its manufacture
Title (de)
Niob enthaltendes warmgewalztes, hochfestes Stahlblech mit gute Tiefziehfähigkeit, und Verfahren zu ihrer Herstellung
Title (fr)
Tôle d'acier laminée à chaud à haute résistance et haute emboutissabilité refermant du niobium, et ses procédés de fabrication
Publication
Application
Priority
FR 9506746 A 19950608
Abstract (en)
[origin: EP0747495A1] Steel sheet comprises 0.5-1.5wt.% Mn, 0.01-0.10, pref. 0.010-0.020% Nb, 0.01-0.1% Al and up to 0.12% C, 0.3% Si, 0.1% P, 0.05% S, 1% Cr, also up to 0.05% of Ti not in the form of nitrides, sulphides or oxides. The structure comprises at least 75% of ferrite hardened by precipitation of carbides or carbonitrides of Nb or of Nb and Ti, the remainder comprising at least 10% martensite and possibly bainite and austenite. Also claimed are methods of making the steel sheet by hot-rolling followed by controlled cooling.
IPC 1-7
IPC 8 full level
C21D 8/02 (2006.01); C21D 8/04 (2006.01); C22C 38/00 (2006.01); C22C 38/12 (2006.01); C22C 38/28 (2006.01)
CPC (source: EP US)
C21D 8/0426 (2013.01 - EP US); C22C 38/12 (2013.01 - EP US); C21D 8/0463 (2013.01 - EP US); C21D 2211/004 (2013.01 - EP US); C21D 2211/005 (2013.01 - EP US); C21D 2211/008 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE DE ES FI FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0747495 A1 19961211; EP 0747495 B1 20000119; AT E189007 T1 20000215; BR 9602713 A 19980422; CA 2178306 A1 19961209; DE 69606226 D1 20000224; DE 69606226 T2 20000907; ES 2143726 T3 20000516; FR 2735148 A1 19961213; FR 2735148 B1 19970711; JP H093609 A 19970107; US 5817196 A 19981006
DOCDB simple family (application)
EP 96401007 A 19960510; AT 96401007 T 19960510; BR 9602713 A 19960607; CA 2178306 A 19960605; DE 69606226 T 19960510; ES 96401007 T 19960510; FR 9506746 A 19950608; JP 17067296 A 19960610; US 64844996 A 19960515