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:
Apr. 07, 1992
Filed:
Apr. 23, 1991
Applicant:
Inventor:
Rollin E Hook, Dayton, OH (US);
Assignee:
Armco Steel Company, L.P., Middletown, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
C21D / ; C22C / ;
U.S. Cl.
CPC ...
148-2 ; 148 / ; 148 / ; 148320 ;
Abstract
A non-aging, cold reduced, recrystallization annealed, low manganese, aluminum killed steel having an r.sub.m value greater than 1.8 produced from a slab having a reduced hot rolling temperature. A slab consisting essentially of .ltoreq.0.08% carbon, .ltoreq.0.1% acid sol. aluminum, <0.20% manganese, all percentages by weight, the balance iron and unavoidable impurities, is hot rolled from a temperature less than about 1260.degree. C. Preferably, the steel has an r.sub.m value of greater than 2.0 after batch annealing and is produced from a slab reheated to a temperature less than about 1175.degree. C.