US4127410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel based alloy
Assignee: Huntington Alloys Corp
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Filing: 1976-11-16
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Granted: 1978-11-28
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Expires: 1996-11-16
Abstract
Abstract Nickel-base alloy containing chromium, aluminum, titanium and molybdenum, and desirably including cobalt and metal from group tungsten and tantalum, has combination of strength and ductility at elevated temperatures, particularly including stress-rupture strength at 1800° F. and ductility at 1400° F., along with resistance against oxidation and to hot corrosion by combustion products from jet propulsion fuels. Alloy is especially useful in production of gas turbine rotor blade castings.
Inventors
- 👤 Howard F. Merrick
- 👤 LeRoy R. Curwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:19
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/056
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
108 words
A nickel-base alloy consisting essentially of 11.5% to 16% chromium, up to 5% metal from the group tantalum and tungsten and mixtures thereof provided the amount of any tungsten does not exceed 3% and further provided the amounts of chromium and any tantalum and tungsten are in proportions in accordance with the relationship %Cr+1/3(%Ta+%W) equal 13.5% to 17.5%, 4.3% to about 5% aluminum and 4% to about 5% titanium provided the sum of aluminum plus titanium is at least 8.5%, 2% to 4% molybdenum, up to 2% hafnium up to 10% cobalt, 0.08% to 0.2% carbon, up to 0.4% boron, up to 0.2% zirconium and balance essentially nickel.
Claim 2
Dependent Claim
108 words
A nickel-base alloy consisting essentially of 11.5% to 16% chromium, up to 5% metal from the group tantalum and tungsten and mixtures thereof provided the amount of any tungsten does not exceed 3% and further provided the amounts of chromium and any tantalum and tungsten are in proportions in accordance with the relationship %Cr+1/3(%Ta+%W) equal 13.5% to 17.5%, 4.3% to about 5% aluminum and 4% to about 5% titanium provided the sum of aluminum plus titanium is at least 8.5%, 2% to 4% molybdenum, up to 2% hafnium up to 10% cobalt, 0.08% to 0.2% carbon, up to 0.4% boron, up to 0.2% zirconium and balance essentially nickel.
Claim 3
Dependent Claim
22 words
An alloy as set forth in claim 1 containing at least 1.5% metal from the group tantalum and tungsten and mixtures thereof.
Claim 4
Dependent Claim
17 words
An alloy as set forth in claim 1 containing 13.5% to 15.5% chromium 4% to 7% cobalt.
Claim 5
Dependent Claim
112 words
A nickel-base alloy consisting essentially of 11.5% to 16% chromium, up to 5% metal from the group tantalum and tungsten and mixtures thereof provided the amount of any tungsten does not exceed 3% and further provided the amounts of chromium and any tantalum and tungsten are in proportions in accordance with the relationship: %Cr + 1/3(%Ta + %W) equal 13.5% to 17.5%, 4.3% to about 5% aluminum and 4% to about 5% titanium provided the sum of aluminum plus titanium is at least 8.5%, 2% to 4% molybdenum, up to 2% hafnium, up to 10% cobalt, up to 0.2% carbon, 0.01% to 0.02% boron, up to 0.2% zirconium and balance essentially nickel.
Claim 6
Dependent Claim
112 words
A nickel-base alloy consisting essentially of 11.5% to 16% chromium, up to 5% metal from the group tantalum and tungsten and mixtures thereof provided the amount of any tungsten does not exceed 3% and further provided the amounts of chromium and any tantalum and tungsten are in proportions in accordance with the relationship: %Cr + 1/3(%Ta + %W) equal 13.5% to 17.5%, 4.3% to about 5% aluminum and 4% to about 5% titanium provided the sum of aluminum plus titanium is at least 8.5%, 2% to 4% molybdenum, up to 2% hafnium, up to 10% cobalt, up to 0.2% carbon, 0.01% to 0.02% boron, up to 0.2% zirconium and balance essentially nickel.
Claim 7
Dependent Claim
112 words
A nickel-base alloy consisting essentially of 11.5% to 16% chromium, up to 5% metal from the group tantalum and tungsten and mixtures thereof provided the amount of any tungsten does not exceed 3% and further provided the amounts of chromium and any tantalum and tungsten are in proportions in accordance with the relationship: %Cr + 1/3(%Ta + %W) equal 13.5% to 17.5%, 4.3% to about 5% aluminum and 4% to about 5% titanium provided the sum of aluminum plus titanium is at least 8.5%, 2% to 4% molybdenum, up to 2% hafnium, up to 10% cobalt, 0.02% to 0.2% carbon, 0.01% to 0.02% boron, 0.06% to 0.1% zirconium and balance essentially nickel.
Claim 8
Dependent Claim
112 words
A nickel-base alloy consisting essentially of 11.5% to 16% chromium, up to 5% metal from the group tantalum and tungsten and mixtures thereof provided the amount of any tungsten does not exceed 3% and further provided the amounts of chromium and any tantalum and tungsten are in proportions in accordance with the relationship: %Cr + 1/3(%Ta + %W) equal 13.5% to 17.5%, 4.3% to about 5% aluminum and 4% to about 5% titanium provided the sum of aluminum plus titanium is at least 8.5%, 2% to 4% molybdenum, up to 2% hafnium, up to 10% cobalt, 0.02% to 0.2% carbon, 0.01% to 0.02% boron, 0.06% to 0.1% zirconium and balance essentially nickel.
References Cited (Backward Citations)
US3869284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-27 | 1982-05-29 | 1982-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-27 | 1986-05-29 | 1986-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-27 | 1990-05-29 | 1990-11-28 | $7700.00 | Window Closed / Lapsed |