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.:

US 9562274 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 07, 2017

Filed:

Sep. 07, 2011
Applicant:

Warren M. Garrison, Jr., Pittsburgh, PA (US);

Inventor:

Warren M. Garrison, Jr., Pittsburgh, PA (US);

Assignee:

Carnegie Mellon University, Pittsburgh, PA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21D 6/00 (2006.01); C21D 6/04 (2006.01); C21D 9/32 (2006.01);
U.S. Cl.
CPC ...
C21D 6/004 (2013.01); C21D 6/007 (2013.01); C21D 6/04 (2013.01); C21D 9/32 (2013.01); C21D 2211/004 (2013.01); C21D 2211/008 (2013.01);
Abstract

An ultra-high strength stainless steel alloy with enhanced toughness includes in % by weight: 0 to 0.06% carbon (C); 12.0 to 18% chromium (Cr); 16.5 to 31.0% cobalt (Co); 0 to 8% molybdenum (Mo); 0.5 to 5.0% nickel (Ni); 0 to 0.5% titanium (Ti); 0 to 1.0% niobium (Nb); 0 to 0.5% vanadium (V); 0 to 16% tungsten (W); balance iron (Fe) and incidental deoxidizers and impurities. The heat treating method includes the steps of austenitizing at least once followed by quenching, tempering and sub-zero cooling to obtain no more than about 6-8% retained austenite in the finished alloy.


Find Patent Forward Citations

Garrison, Jr., Warren. (2017). Method of making ultra-high strength stainless steels (U.S. Patent No. 9562274). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9562274

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