(19)
(11) EP 4 416 312 A1

(12)

(43) Date of publication:
21.08.2024 Bulletin 2024/34

(21) Application number: 22800790.2

(22) Date of filing: 20.10.2022
(51) International Patent Classification (IPC): 
C22C 38/06(2006.01)
C22C 38/46(2006.01)
C21D 1/18(2006.01)
C22C 38/02(2006.01)
 C22C 38/44(2006.01)
C21D 8/02(2006.01)
C21D 6/00(2006.01)
C22C 38/04(2006.01)
(52) Cooperative Patent Classification (CPC):
C22C 38/44; C22C 38/46; C22C 38/06; C21D 2211/008; C21D 8/0226; C21D 8/0263; C21D 8/0205; C21D 1/18; C21D 6/004; C22C 38/02; C22C 38/04
(86) International application number:
PCT/IB2022/060094
(87) International publication number:
WO 2023/067544 (27.04.2023 Gazette 2023/17)
(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(30) Priority: 20.10.2021 IN 202131047704

(71) Applicant: Tata Steel Limited
Jamshedpur, Jharkhand 831001 (IN)

(72) Inventors:
  • GHOSH, Chiradeep
    Jamshedpur 831 001, Jharkhand, India Jamshedpur 831 001 (IN)
  • KUMAR, Rahul
    Jamshedpur 831 001, Jharkhand, India Jamshedpur 831 001 (IN)

(74) Representative: Manitz Finsterwald Patent- und Rechtsanwaltspartnerschaft mbB 
Martin-Greif-Strasse 1
80336 München
80336 München (DE)

   


(54) HIGH HARDNESS LOW ALLOYED HOT ROLLED STEEL AND METHOD OF MANUFACTURING THEREOF