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US4288247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel-base superalloys
Assignee: Huntington Alloys Corp
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Filing: 1979-07-02
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Granted: 1981-09-08
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Expires: 1999-07-02
Abstract
Abstract A nickel-base superalloy containing 14 to 22% chromium, 5 to 25% cobalt, 1 to 5% tungsten, 0.5 to 3% tantalum, 2 to 5% titanium, 1 to 4.5% aluminum, the sum of the titanium plus aluminum being 4.5 to 9%, up to 2% niobium, about 0.35 to 1.2% boron, up to 3.5% molybdenum, up to 0.5% zirconium, up to 0.2% total of yttrium and lanthanum, up to 0.1% carbon, at least 0.05% of at least one element of the group of hafnium and vanadium with the maximum being about 2.2% hafnium and 2% vanadium, the balance of the alloy being essentially nickel.
Inventors
- 👤 Stuart W. Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:35
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/055
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
108 words
An alloy consisting essentially of, by weight, 19 to 21% chromium, 5 to 25% cobalt, 1 to 5% tungsten, 0.5 to 3% tantalum, 2 to 5% titanium, 1 to 4.5% aluminum, the sum of the titanium plus aluminum being from 4.5 to 9%, 0 to 2% niobium, 0.35 to 1.2% boron, 0 to 3.5% molybdenum, 0 to 0.5% zirconium, 0 to 0.2% in total of yttrium or lanthanum or both, and 0 to 0.1% carbon, the balance, apart from impurities, being nickel, characterized in that the alloy additionally contains one or both of hafnium in an amount up to 2.2% and vanadium in an amount up to 2.0%.
Claim 2
Dependent Claim
108 words
An alloy consisting essentially of, by weight, 19 to 21% chromium, 5 to 25% cobalt, 1 to 5% tungsten, 0.5 to 3% tantalum, 2 to 5% titanium, 1 to 4.5% aluminum, the sum of the titanium plus aluminum being from 4.5 to 9%, 0 to 2% niobium, 0.35 to 1.2% boron, 0 to 3.5% molybdenum, 0 to 0.5% zirconium, 0 to 0.2% in total of yttrium or lanthanum or both, and 0 to 0.1% carbon, the balance, apart from impurities, being nickel, characterized in that the alloy additionally contains one or both of hafnium in an amount up to 2.2% and vanadium in an amount up to 2.0%.
Claim 3
Dependent Claim
13 words
An alloy according to claim 1 containing a maximum of about 1.7% hafnium.
Claim 4
Dependent Claim
11 words
An alloy according to claim 1 containing at least 0.05% hafnium.
Claim 5
Dependent Claim
11 words
An alloy according to claim 1 containing at least 0.3% hafnium.
Claim 6
Dependent Claim
11 words
An alloy according to claim 1 containing at least 0.05% vanadium.
Claim 7
Dependent Claim
13 words
An alloy according to claim 5 containing a maximum of about 1.5% vanadium.
Claim 8
Dependent Claim
14 words
An alloy as in claim 1 containing about 20% chromium and about 15% cobalt.
References Cited (Backward Citations)
US4127410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |