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:
Nov. 15, 1983
Filed:
Feb. 16, 1982
Applicant:
Inventors:
Bruce L Bramfitt, Bethlehem, PA (US);
Steven S Hansen, Bethlehem, PA (US);
Donald L Harper, Easton, PA (US);
Roger R Pradhan, Nazareth, PA (US);
Assignee:
Bethlehem Steel Corporation, Bethlehem, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ; C22C / ;
U.S. Cl.
CPC ...
148 / ; 7512 / ; 148 36 ;
Abstract
This invention is directed to a hot-rolled steel sheet having an essentially refined ferritic grain size, a balanced chemical composition comprising, by weight, 0.06 to 0.09% carbon, 1.0 to 1.6% manganese, 0.5% maximum silicon, 0.03 to 0.05% columbium, 0.06 to 0.12% vanadium, 0.010 to 0.025% nitrogen, 0.004% maximum sulfur, 0.02% maximum phosphorus, 0.02 to 0.08% aluminum, balance essentially iron, and characterized by 80 ksi minimum yield strength, improved transverse bendability, and improved sheared edge stretchability.