MUMBAI, India, June 27 -- Intellectual Property India has published a patent application (202331088341 A) filed by Tata Steel Limited, Jamshedpur, Jharkhand, on Dec. 22, 2023, for 'complex phase high strength hot rolled steel and method of manufacturing thereof.'
Inventor(s) include Basudev Bhattacharya; Santigopal Samanta; Ravi Ranjan; and Sarbari Ganguly.
The application for the patent was published on June 27, under issue no. 26/2025.
According to the abstract released by the Intellectual Property India: "The present invention relates to a complex phase high strength hot rolled steel and a method (100) for manufacturing complex phase high strength hot rolled steel. The complex phase high strength hot rolled steel comprises the following composition expressed in weight %: (C): 0.16%, (Mn): 1.2% - 2.8%, (Cr): 0.1-1.0%, (Si): 0.2%-0.8%, (S): 0.006%, (P): 0.02%, (Ni): 0.0 - 0.08%, (Al): 0.02-0.06%, (Ti): 0.05%, (Mo): 0.5%, (N) 80 ppm, and the remaining being substantially iron and incidental impurities. The complex phase high strength hot rolled steel comprises a microstructure of 5-20% ferrite, 5-20% martensite, and 60-90% bainite. The complex phase high strength hot rolled steel exhibits ultimate tensile strength (UTS) in the range of 980-1150 MPa, yield strength (YS) 750 MPa, and minimum %Elongation - 10."
Disclaimer: Curated by HT Syndication.
