MUMBAI, India, Sept. 28 -- Intellectual Property India has published a patent application (202647105308 A) filed by Jfe Steel Corporation on September 01, 2026, for Steel For Machine Structure.
Inventor includes Imanami Yuta.
The application for the patent was published on September 25, 2026, under issue no. 39/2026.
Abstract: The purpose of the present invention is to provide a steel for a machine structure, the steel being capable of suppressing chevron cracks during extrusion by controlling the degree of segregation, inclusions, and dislocation density in the steel after hot rolling. The steel for a machine structure has a specific chemical composition, in which: the average value of the degree of segregation, which is obtained by dividing the maximum C, Si, and Mn contents as measured by an electron probe micro analyzer (EPMA), by the respective average C, Si, and Mn contents as measured by the EPMA, satisfies a predetermined formula; the ID, which is the predicted maximum diameter of inclusions obtained by an extreme value statistical method, satisfies a predetermined formula; and the dislocation density satisfies a predetermined formula.
Disclaimer: Curated by HT Syndication.
