Global Patent Index - EP 1398390 B1

EP 1398390 B1 20060118 - Steel with a very fine ferritic and martensitic microstructure having a high tensile strength

Title (en)

Steel with a very fine ferritic and martensitic microstructure having a high tensile strength

Title (de)

Ferritisch/martensitischer Stahl mit hoher Festigkeit und sehr feinem Gefüge

Title (fr)

Acier ferritique-martensitique possédant une resistance élevée ayant une fine microstructure

Publication

EP 1398390 B1 (DE)

Application

EP 02020294 A

Priority

EP 02020294 A

Abstract (en)

[origin: EP1398390A1] The following composition (wt. %) is cast into optionally flat ingots: C 0.05-2, Si up to 0.9, P up to 0.06, Mn 0.6-1.2, Al up to 0.05%, Cr 0.02-0.6, Nb up to 0.08%, Ti up to 0.08%, V up to 0.08%, Mo up to 0.4%, Cu up to 1%, Ni up to 1%, remainder Fe and inevitable impurities. The ingot is heated to hot-rolling temperature of 750-950 degrees C. The hot sheet is cooled to normal temperatures, up to 250 degrees C, at the rate of at least 10 K/s, for winding into rolls. An Independent claim is included for corresponding sheet.

IPC 8 full level

C21D 8/02 (2006.01); C21D 8/04 (2006.01)

CPC (source: EP)

C21D 8/0226 (2013.01); C21D 8/0263 (2013.01); C21D 2201/00 (2013.01); C21D 2211/005 (2013.01); C21D 2211/008 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

DOCDB simple family (publication)

EP 1398390 A1 20040317; EP 1398390 B1 20060118; AT 316157 T 20060215; DE 50205631 D1 20060406; ES 2256378 T3 20060716

DOCDB simple family (application)

EP 02020294 A 20020911; AT 02020294 T 20020911; DE 50205631 T 20020911; ES 02020294 T 20020911