Ultra high strength alloy for severe oil and gas environments and method of preparation
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United States of America Patent
Stats
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Apr 28, 2015
Grant Date -
Jan 20, 2011
app pub date -
Nov 18, 2008
filing date -
Nov 19, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A high strength, corrosion resistant alloy suitable for use in oil and gas environments includes, in weight %: 0-12% Fe, 18-24% Cr, 3-6.2% Mo, 0.05-3.0% Cu, 4.0-6.5% Nb, 1.1-2.2% Ti, 0.05-0.4% 0.05-0.2% Al, 0.005-0.040% C, balance Ni plus incidental impurities and deoxidizers. A ratio of Nb/(Ti+Al) is equal to 2.5-7.5 to provide a desired volume fraction of γ′ and γ″ phases. The alloy has a minimum yield strength of 145 ksi.
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International Classification(s)
- 2008 Application Filing Year
- F16L Class
- 956 Applications Filed
- 592 Patents Issued To-Date
- 61.93 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- F16L Class
- 16.56 % this patent is cited more than
- 10 Age
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|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 28, 2026 |
