Ultra-high strength hot-rolled steel with toughness and method of making same

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United States of America Patent

PATENT NO 11802327
SERIAL NO

17062078

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Abstract

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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.

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Patent Owner(s)

  • BIG RIVER STEEL, LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
De, Amar K Cordova, US 4 1
Hennessy, Denis Marion, US 3 39
Mahimkar, Chirag R Memphis, US 2 0

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