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:
Dec. 14, 1976
Filed:
Jun. 12, 1975
Stephen J Matas, Independence, OH (US);
Raymond E Mintus, Warren, OH (US);
John B Ballance, Bedford Heights, OH (US);
George J Klems, Bethel Park, PA (US);
Republic Steel Corporation, Cleveland, OH (US);
Abstract
A low alloy steel having a composition containing columbium, vanadium and silicon, advantageously in specified ranges of content, has demonstrated superior mechanical properties, comprising yield strength above 80 ksi, excellent toughness including good impact strength at low temperatures, and good formability evidenced by a suitably high percent elongation. The steel in its preferred embodiments includes a significant amount of manganese, and is economically producible in as-hot-rolled state to achieve the stated properties, subject to attainment of even higher strength by an aging treatment.