Global Patent Index - EP 0747496 B1

EP 0747496 B1 2000-01-19 - Hot rolled steel sheet with high strength and good deep-drawing properties, containing titanium and process for its manufacturing

Title (en)

Hot rolled steel sheet with high strength and good deep-drawing properties, containing titanium and process for its manufacturing

Title (de)

Titan 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 renfermant du titane, et ses procédés de fabrication

Publication

EP 0747496 B1 (FR)

Application

EP 96401006 A

Priority

FR 9506745 A

Abstract (en)

[origin: EP0747496A1] Steel sheet comprises 0.5-1.5wt.% Mn, 0.01-0.1% Al and up to 0.12% C, 0.3% Si, 0.1% P, 0.05% S, 1% Cr, 0.05% Nb, also 0.03-0.15% 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 Ti or of Ti and Nb, 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 (main, further and additional classification)

C22C 38/14; C21D 8/04

IPC 8 full level (invention and additional information)

C21D 8/04 (2006.01); C22C 38/00 (2006.01); C22C 38/14 (2006.01); C22C 38/28 (2006.01)

CPC (invention and additional information)

C22C 38/14 (2013.01); C21D 8/0426 (2013.01); C21D 8/0463 (2013.01); C21D 2211/004 (2013.01); C21D 2211/005 (2013.01); C21D 2211/008 (2013.01)

Designated contracting state (EPC)

AT BE DE ES FI FR GB IT LU NL SE

DOCDB simple family

EP 0747496 A1 19961211; EP 0747496 B1 20000119; AT 189008 T 20000215; CA 2178305 A1 19961209; DE 69606227 D1 20000224; DE 69606227 T2 20000907; ES 2143725 T3 20000516; FR 2735147 A1 19961213; FR 2735147 B1 19970711; JP H08337840 A 19961224; US 5759297 A 19980602