MUMBAI, India, Aug. 10 -- Intellectual Property India has published a patent application (202617074952 A) filed by Nippon Steel Corporation on June 17, 2026, for Steel Sheet, Component Including Same, And Method For Manufacturing Steel Sheet.
Inventors include Murata, Shinichi; Yasutomi, Takashi; and Sakurada, Eisaku.
The application for the patent was published on July 31, 2026, under issue no. 31/2026.
Abstract: Provided is a steel sheet characterized by having a prescribed chemical composition and in that: the metal structure thereof contains, in terms of area%, 10-40% of ferrite, 60-90% of martensite, 0-10% of bainite, and a total of 0-5% of at least one among pearlite and retained austenite; and when a 150 µm × 150 µm region at a position at 1/4 of the sheet thickness in a cross section perpendicular to the sheet surface is equally divided into nine regions, the number density of ferrite in each of the divided regions is calculated, and the average value thereof is indicated by Nam, the difference in the number density of ferrite between divided regions adjacent to each other in the sheet thickness direction is Nam × 0.60 or less in all cases. Also provided are a component including the steel sheet, and a method for manufacturing the steel sheet.
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