The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 1996
Filed:
Jun. 07, 1995
Richard L Bodnar, Bethlehem, PA (US);
Steven S Hansen, Bethlehem, PA (US);
Bethlehem Steel Corporation, , DE (US);
Abstract
A fully killed steel has a composition that is tailored to meet a 50 KSI minimum yield strength after hot rolling and accelerated cooling. The steel has a carbon content in the range of from about 0.05 to about 0.10 percent or from about 0.15 to about 0.27 percent, from about 0.005 to about 0.020 percent titanium, from about 0.004 to about 0.015 percent nitrogen, from 0 to about 0.02 percent vanadium, and the remainder iron plus incidental impurities. The steel is continuously cast, hot rolled to plate, and cooled to a temperature of less than about 1100.degree. F. at a cooling rate lying in a cooling rate band extending from about 2.degree. to about 14.degree. F./sec at 2 inches plate thickness, from about 7.degree. to about 26.degree. F./sec at 1 inch plate thickness, and from about 13.degree. to about 45.degree. F./sec at 1/2 inch plate thickness.