Invention Grant
- Patent Title: Ultra-high strength hot-rolled steel with toughness and method of making same
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Application No.: US18202587Application Date: 2023-05-26
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Publication No.: US12104232B2Publication Date: 2024-10-01
- Inventor: Amar K. De , Denis Hennessy , Chirag R. Mahimkar
- Applicant: Big River Steel, LLC
- Applicant Address: US AR Osceola
- Assignee: Big River Steel, LLC
- Current Assignee: Big River Steel, LLC
- Current Assignee Address: US AR Osceola
- Agency: Simonelli IP, PLLC
- The original application number of the division: US17062078 2020.10.02
- Main IPC: C22C38/28
- IPC: C22C38/28 ; B21B3/02 ; B22D11/00 ; C21D6/02 ; C21D8/02 ; C22C38/04 ; C22C38/06 ; C22C38/26 ; C21D6/00
Abstract:
A method is used to fabricate a hot-rolled steel having a yield strength greater than 550 MPa and an impact toughness of at least 27 J at a temperature of −40° F. In one embodiment, the yield strength is greater than 690 MPa. The method includes melting steel to create melted steel. The melted steel is poured into a mold. The metal steel is continuously cast into a steel slab. The steel slab is heated to maintain a predetermined temperature. The steel slab is rolled to reduce the thickness to a predetermined thickness to create a hot-rolled steel sheet.
Public/Granted literature
- US20230295785A1 Ultra-High Strength Hot-Rolled Steel with Toughness and Method of Making Same Public/Granted day:2023-09-21
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