Corrosion-resistant nickel-base alloy

Details Corrosion-resistant nickel-base alloy Corrosion-resistant nickel-base alloy

2011-04-12

2011-04-12

Wyszomierski, George (Department: 1733)

Alloys or metallic compositions

Nickel base

Chromium containing

C420S453000, C148S410000, C148S427000

Reexamination Certificate

active

07922969

ABSTRACT:
The corrosion-resistant nickel-base alloy combines thermal stability with corrosion resistance and mechanical strength. The alloy contains balanced proportions of nickel, molybdenum, chromium, and iron with an effective amount of yttrium to stabilize grain boundaries against unwanted reactions, which might degrade corrosion resistance, and an effective amount of boron to maintain an acceptable level of ductility. The alloy may contain minor amounts of additives or impurities, such as silicon, manganese, and aluminum. The alloy may contain between about 25-45% molybdenum, 2-6% chromium, 2-4% iron, 0.01-0.03% boron, 0.005-0.015% yttrium, and up to a maximum of 1% manganese, silicon, and aluminum, respectively, by weight, the balance being nickel. It is preferred that the combined ratio of molybdenum, chromium, and iron to nickel be in the range of about 25% to 45%.

REFERENCES:
patent: 1710445 (1929-04-01), Becket
patent: 1836317 (1931-12-01), Franks
patent: 1924245 (1933-08-01), Koster
patent: 2109285 (1938-02-01), Brown
patent: 2196699 (1940-04-01), Franks
patent: 2207380 (1940-07-01), Kurtz
patent: 2237872 (1941-04-01), Badger, Jr.
patent: 2315497 (1943-04-01), Brennan
patent: 2959480 (1960-11-01), Flint
patent: 3649255 (1972-03-01), Ecer
patent: 3988118 (1976-10-01), Grierson et al.
patent: 4692305 (1987-09-01), Rangaswamy et al.
patent: 4818486 (1989-04-01), Rothman et al.
patent: 5424029 (1995-06-01), Kennedy et al.
patent: 5529642 (1996-06-01), Sugahara et al.
patent: 5556594 (1996-09-01), Frank et al.
patent: 5599385 (1997-02-01), Czech et al.
patent: 6106643 (2000-08-01), Suarez et al.
patent: 6503345 (2003-01-01), Klarstrom
patent: 6610119 (2003-08-01), Klarstrom
patent: 6632299 (2003-10-01), Harris
patent: 6635362 (2003-10-01), Zheng
patent: 6682780 (2004-01-01), Tzatzov
patent: 6756012 (2004-06-01), Prasad
patent: 6761854 (2004-07-01), Smith et al.
patent: 6905559 (2005-06-01), O'Hara et al.
patent: 7011721 (2006-03-01), Harris et al.
patent: 61-014100 (1986-01-01), None
patent: 02-259037 (1990-10-01), None
Haynes Alloy 242 Technical Brief, Published 2009, 2 pages.
Haynes Hastelloy B-3 Alloy Technical Brief, Published 2009, 2 pages.
English translation of Yoshimoto—JP 02-259037, published Oct. 19th, 1990, 13 pages.
Hayes International Inc. web page, www.hayesintl.com/HB116ahra/H3116Ap3.htm, printed Dec. 2, 2006.

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