EP 4180544 A1 20230517 - A HOT-ROLLED STEEL STRIP PRODUCT AND METHOD FOR ITS PRODUCTION
Title (en)
A HOT-ROLLED STEEL STRIP PRODUCT AND METHOD FOR ITS PRODUCTION
Title (de)
WARMGEWALZTES STAHLBANDPRODUKT UND VERFAHREN ZU DESSEN HERSTELLUNG
Title (fr)
PROCÉDÉ DE BANDE D'ACIER LAMINÉE À CHAUD ET SON PROCÉDÉ DE PRODUCTION
Publication
Application
Priority
EP 21207843 A 20211111
Abstract (en)
A hot-rolled steel strip product having a tensile strength (R<sub>m</sub>) above 1400 MPa and a microstructure comprising at least 90 % by volume of martensite. The steel has a composition comprising, in percent by weight (wt.-%):C 0.20 ― 0.26Si 0.05 ― 0.5,Mn 0.2 ― 0.8,Cr 0.2 ― 0.6,Ni 0.2 ― 0.5,Al 0.015 ― 0.065,Ti 0.005 ― 0.02,B 0.001 ― 0.005,optionally Cu <0.30,optionally Mo <0.10,optionally Nb <0.01,optionally V <0.04,balance Fe and unavoidable impurities.
IPC 8 full level
C21D 8/02 (2006.01); C21D 8/04 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C22C 38/42 (2006.01); C23C 2/02 (2006.01); C23C 2/06 (2006.01)
CPC (source: EP)
C21D 1/18 (2013.01); C21D 6/004 (2013.01); C21D 6/02 (2013.01); C21D 8/0205 (2013.01); C21D 8/0226 (2013.01); C21D 8/0247 (2013.01); C21D 8/0263 (2013.01); C21D 9/46 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); C21D 2211/008 (2013.01)
Citation (search report)
- [X] EP 3719149 A1 20201007 - SSAB TECHNOLOGY AB [SE]
- [A] US 2015140358 A1 20150521 - YOKOYAMA TAKAFUMI [JP], et al
- [A] EP 2647730 A2 20131009 - RAUTARUUKKI OYJ [FI]
- [A] JP 4874434 B1 20120215
- [A] JP 2009030093 A 20090212 - JFE STEEL KK
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4180544 A1 20230517; EP 4430223 A1 20240918; WO 2023083898 A1 20230519
DOCDB simple family (application)
EP 21207843 A 20211111; EP 2022081342 W 20221109; EP 22818208 A 20221109