MUMBAI, India, Sept. 12 -- Intellectual Property India has published a patent application (202517067973 A) filed by Jfe Steel Corporation, Tokyo, on July 16, for 'high-strength seamless steel pipe for high-pressure hydrogen vessel and manufacturing method therefor.'
Inventor(s) include Inoue Naho; Yussalla Vanadia Irisca; Okano Hiroshi; and Eguchi Kenichiro.
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: "The purpose of the present invention is to provide: a high-strength seamless steel pipe which is for a high-pressure hydrogen vessel and has excellent hydrogen embrittlement resistance; and a manufacturing method therefor. This high-strength seamless steel pipe for a high-pressure hydrogen vessel has a specific composition and has a structure in which the area ratio of tempered martensite is at least 95%, wherein at least 50 mass% of Mo contained in the steel is contained in precipitates, at least 50 mass% of Mo contained in the precipitates is contained in precipitates having a diameter of at most 50 nm, and the tensile strength TS is at least 850 MPa."
The patent application was internationally filed on Feb. 27, 2024, under International application No.PCT/JP2024/007115.
Disclaimer: Curated by HT Syndication.
