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. 18, 1997
Filed:
Aug. 14, 1996
Applicant:
Inventors:
John Scott Smith, Proctorville, OH (US);
Ladonna Sheree Hillis, Orlando, FL (US);
Melissa Ann Moore, Littleton, CO (US);
Assignee:
Inco Alloys International, Inc., Huntington, WV (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ; C22C / ;
U.S. Cl.
CPC ...
420 94 ; 420 95 ; 420 97 ; 420581 ; 4205841 ; 420586 ;
Abstract
The alloy of the invention provides a low coefficient of thermal expansion alloy having a CTE of about 4.9.times.10.sup.-6 m/m/.degree.C. or less at 204.degree. C. and a relatively high strength. The alloy contains about 40.5 to about 48 nickel, about 2 to about 3.7 niobium, about 0.75 to about 2 titanium, about 0 to about 1 aluminum, about 3.7 or less total niobium plus tantalum and a balance of iron and incidental impurities. Alloys of the invention may be aged to a Rockwell C hardness of at least about 30.