(19)
(11) EP 3 867 417 A1

(12)

(43) Date of publication:
25.08.2021 Bulletin 2021/34

(21) Application number: 19784114.1

(22) Date of filing: 16.10.2019
(51) International Patent Classification (IPC): 
C22C 38/04(2006.01)
C22C 38/06(2006.01)
C22C 38/16(2006.01)
C22C 38/12(2006.01)
C22C 38/38(2006.01)
C21D 8/02(2006.01)
C22C 38/22(2006.01)
C21D 9/46(2006.01)
 C22C 38/02(2006.01)
C22C 38/00(2006.01)
C22C 38/18(2006.01)
C22C 38/14(2006.01)
C22C 38/34(2006.01)
C22C 38/28(2006.01)
C22C 38/32(2006.01)
(86) International application number:
PCT/EP2019/078117
(87) International publication number:
WO 2020/079096 (23.04.2020 Gazette 2020/17)
(84) Designated Contracting States:
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 States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 19.10.2018 EP 18201558

(71) Applicant: Tata Steel Nederland Technology B.V.
1951 JZ Velsen-Noord (NL)

(72) Inventors:
  • CHEN, Shangping
    1970 CA IJmuiden (NL)
  • MOSTERT, Richard
    1970 CA IJmuiden (NL)
  • RANA, Radhakanta
    1970 CA IJmuiden (NL)

(74) Representative: Group Intellectual Property Services 
c/o Tata Steel Nederland Technology B.V. P.O. Box 10000 - 3G.37
1970 CA IJmuiden
1970 CA IJmuiden (NL)

   


(54) HOT ROLLED STEEL SHEET WITH ULTRA-HIGH STRENGTH AND IMPROVED FORMABILITY AND METHOD FOR PRODUCING THE SAME