MUMBAI, India, Sept. 12 -- Intellectual Property India has published a patent application (202517080353 A) filed by Jfe Steel Corporation, Tokyo, on Aug. 25, for 'steel bar, bolt, and method for producing bolt.'
Inventor(s) include Ihara Naoya; and Nakashima Koichi.
The application for the patent was published on Sept. 12, under issue no. 37/2025.
According to the abstract released by the Intellectual Property India: "Provided are: a steel bar suitable as a material for a bolt having a large diameter, high strength, and high toughness; a bolt having a large diameter, high strength, and high toughness; and a method for producing the bolt. The steel bar 1 has a chemical composition, in mass %, of C: 0.35-0.45% inclusive, Si: 0.10-0.50% inclusive, Mn: 0.50-2.00% inclusive, P: 0.030% or less, S: 0.030% or less, Ni: 1.00-3.00% inclusive, Cr: 0.50-2.00% inclusive, and Mo: 0.10-0.50% inclusive, the balance being Fe and impurities, and has a DI value of 420 or more and a diameter of 65 mm or more."
The patent application was internationally filed on Feb. 07, 2024, under International application No.PCT/JP2024/004198.
Disclaimer: Curated by HT Syndication.
