MUMBAI, India, May 30 -- Intellectual Property India has published a patent application (202517044408 A) filed by Arcelormittal, Luxembourg, on May 7, for 'cold rolled, annealed and tempered steel sheet and method of manufacturing the same.'
Inventor(s) include Perlade, Astrid Bureau; Zhu, Kangying ; Remy, Blandine Intellectual; and Stoltz, Michael.
The application for the patent was published on May 30, under issue no. 22/2025.
According to the abstract released by the Intellectual Property India: "The invention deals with a cold rolled, annealed and tempered steel sheet, made of a steel having a composition comprising, by weight percent: C: 0.03 - 0.18 % Mn: 4.5 - 10.0 % B: 0.0005 - 0.005% Ti 0.010 - 0.050 % Si 0.1 - 1.20 % S = 0.010 % P = 0.020 % N = 0.010 % and comprising optionally one or more of the following elements, in weight percentage: Al = 2.5% Mo = 0.4% Nb = 0.050 % Cr = 0.5 % V = 0.2 % the remainder of the composition being iron and unavoidable impurities resulting from the smelting, said steel sheet having a microstructure comprising, in surface fraction, - from 0% to 30% of ferrite, - from 3% to 30% of retained austenite, with a manganese content in austenite [Mn]?, expressed in weight percent, such that F? ([Mn]?-1.3 x %Mn) 1.00 - the balance being tempered martensite."
The patent application was internationally filed on Nov. 13, 2023, under International application No.PCT/IB2023/061438.
Disclaimer: Curated by HT Syndication.
