MUMBAI, India, May 30 -- Intellectual Property India has published a patent application (202517035197 A) filed by Jfe Steel Corporation, Tokyo, on April 10, for 'high strength hot rolled steel sheet and method for producing same.'
Inventor(s) include Hasegawa Hiroshi; Matsuda Hiroshi; and Tobita Shunsuke.
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 purpose of the present invention is to provide a high strength hot rolled steel sheet having excellent toughness and punchability and also having excellent strength and toughness after post heating; and a method for producing the high strength hot rolled steel sheet.???Provided is a high strength hot rolled steel sheet having a chemical composition comprising in % by mass 0.04 to 0.18% of C 0.1 to 3.0% of Si 0.5 to 3.5% of Mn more than 0% and 0.050% or less of P more than 0% and 0.010% or less of S more than 0% and 1.5% or less of Al more than 0% and 0.010% or less of N more than 0% and 0.003% or less of O 0.040 to 0.150% of Ti and a remainder comprising Fe and unavoidable impurities in which a steel structure contains bainite as a main phase retained austenite is contained in an amount less than 3% by volume a ((solid solution Ti amount)/(total Ti amount)) ratio is 0.30 or more and less than 0.80 and the amount of Ti that is present in the form of precipitates each having a grain diameter of 100 nm or more is 0.010 to 0.030% by mass."
The patent application was internationally filed on Nov. 17, 2023, under International application No.PCT/JP2023/041536.
Disclaimer: Curated by HT Syndication.
