Patent US3976480A successfully refreshed from Google Patents.
US3976480A
Expired / Lapsed
US
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Nickel base alloy
Assignee: Proterial Ltd
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Filing: 1974-09-18
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Granted: 1976-08-24
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Expires: 1994-09-18
Abstract
Abstract A nickel base alloy containing, in weight percent, from 0.05 to 0.25% carbon, from 15 to 17.5% chrominum, from 5 to 15% cobalt, no more than 6% molybdenum, from 3 to 13% tungsten, from 1.5 to 3% aluminum, from 3.5 to 4.5% titanium, no more than 0.05% boron, no more than 0.5% ziroconium, balance essentially nickel, except for impurities, wherein: The sum of molybdenum and 1/2 tungsten is 5.5 to 7.5%; The sum of aluminum and titanium is 5.0 to 7.5; In case the amount of tungsten is from 7 to 13%, that of aluminum is 1.5 to 2.5%; and In case the amount of tungsten is 3 to 7%, that of aluminum is 2 to 3%. This alloy presents a superb combination of high strength at an elevated temperature and high resistance to sulfurization.
Inventors
- 👤 Rikizo Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:28
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/056
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
107 words
A forgeable nickel base alloy consisting essentially of, in weight percent, from 0.1 to 0.2% carbon, from 15 to 17.5% chromium, from 8 to 12% cobalt, from 1.5 to 5.5% molybdenum, from 7 to 13% tungsten, from 1.5 to 2.5% aluminum, from 3.7 to 4.3% titanium, no more than 0.3% boron, no more than 0.2% zirconium, the balance being essentially nickel, except for impurities, wherein: the sum of molybdenum and 1/2 tungsten is 5.5 to 7.5%; the sum of aluminum and titanium is 5.5 to 7.0%; and in case the amount of tungsten is from 7 to 11%, the amount of aluminum is from 1.7 to 2.3%.
Claim 2
Dependent Claim
107 words
A forgeable nickel base alloy consisting essentially of, in weight percent, from 0.1 to 0.2% carbon, from 15 to 17.5% chromium, from 8 to 12% cobalt, from 1.5 to 5.5% molybdenum, from 7 to 13% tungsten, from 1.5 to 2.5% aluminum, from 3.7 to 4.3% titanium, no more than 0.3% boron, no more than 0.2% zirconium, the balance being essentially nickel, except for impurities, wherein: the sum of molybdenum and 1/2 tungsten is 5.5 to 7.5%; the sum of aluminum and titanium is 5.5 to 7.0%; and in case the amount of tungsten is from 7 to 11%, the amount of aluminum is from 1.7 to 2.3%.
Claim 3
Dependent Claim
46 words
A forgeable nickel base alloy consisting essentially of, in weight percent, about 0.15% carbon, about 16% chromium, about 10% cobalt, about 2% molybdenum, about 10% tungsten, about 2% aluminum, about 4% titanium, about 0.015% boron, about 0.05% zirconium, the balance being essentially nickel, except for impurities.
Claim 4
Dependent Claim
46 words
A forgeable nickel base alloy consisting essentially of, in weight percent, about 0.15% carbon, about 16% chromium, about 10% cobalt, about 2% molybdenum, about 10% tungsten, about 2% aluminum, about 4% titanium, about 0.015% boron, about 0.05% zirconium, the balance being essentially nickel, except for impurities.
Claim 5
Dependent Claim
46 words
A forgeable nickel base alloy consisting essentially of, in weight percent, about 0.15% carbon, about 16% chromium, about 10% cobalt, about 3% molybdenum, about 6% tungsten, about 2.5% aluminum, about 4% titanium, about 0.015% boron, about 0.05% zirconium, the balance being essentially nickel, except for impurities.
Claim 6
Dependent Claim
46 words
A forgeable nickel base alloy consisting essentially of, in weight percent, about 0.15% carbon, about 16% chromium, about 10% cobalt, about 3% molybdenum, about 6% tungsten, about 2.5% aluminum, about 4% titanium, about 0.015% boron, about 0.05% zirconium, the balance being essentially nickel, except for impurities.
Claim 7
Dependent Claim
65 words
A forgeable nickel base alloy consisting essentially of, in weight percent, from 0.1 to 0.2% carbon, from 15 to 17.5% chromium, from 8 to 12% cobalt, from 1.5 to 5.5% molybdenum, from 7 to 11% tungsten, from 1.7 to 2.3% aluminum, from 3.7 to 4.3% titanium, no more than 0.05% boron, no more than 0.5% zirconium, and the balance being essentially nickel, except for impurities.
Claim 8
Dependent Claim
65 words
A forgeable nickel base alloy consisting essentially of, in weight percent, from 0.1 to 0.2% carbon, from 15 to 17.5% chromium, from 8 to 12% cobalt, from 1.5 to 5.5% molybdenum, from 7 to 11% tungsten, from 1.7 to 2.3% aluminum, from 3.7 to 4.3% titanium, no more than 0.05% boron, no more than 0.5% zirconium, and the balance being essentially nickel, except for impurities.
Claim 9
Dependent Claim
31 words
The forgeable nickel base alloy of claim 4, wherein the sum of molybdenum and 1/2 tungsten is 5.5 to 7.5% and the sum of aluminum and titanium is 5.5 to 7.0%.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |