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US3941590A
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Precipitation hardening Ni base alloy
Assignee: Proterial Ltd
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Filing: 1974-08-05
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Granted: 1976-03-02
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Expires: 1994-08-05
Abstract
Abstract Precipitation hardening Ni base alloys comprising not more than 0.2% by weight of C, 17 to 19% by weight of Cr, 3.5 to 4.5% by weight of Mo, 5 to 7% by weight of W, 5 to 15% by weight of Co, 1.75 to 2.25% by weight of Al, 2.0 to 3.5% by weight of Ti, not more than 0.02% by weight of B, not more than 0.3% by weight of Zr and the balance of Ni and incidental impurities have good hot workability and high stress rupture strength at high temperatures of about 1,000°C.
Inventors
- 👤 Rikizo Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:54
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/056
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
82 words
A precipitation hardening Ni base alloy consisting essentially of not more than 0.2% by weight of C, 17 to 19% by weight of Cr, 3.5 to 4.5% by weight of Mo, 5to 7% by weight of W, 5 to 15% by weight of Co, 1.75 to 2.25% by weight of A1, 2.0 to 3.5% by weight of Ti, not more than 0.02% by weight of B, not more than 0.3% by weight of Zr and the balance of Ni except incidental impurities.
Claim 2
Dependent Claim
82 words
A precipitation hardening Ni base alloy consisting essentially of not more than 0.2% by weight of C, 17 to 19% by weight of Cr, 3.5 to 4.5% by weight of Mo, 5to 7% by weight of W, 5 to 15% by weight of Co, 1.75 to 2.25% by weight of A1, 2.0 to 3.5% by weight of Ti, not more than 0.02% by weight of B, not more than 0.3% by weight of Zr and the balance of Ni except incidental impurities.
Claim 3
Dependent Claim
83 words
A precipitation hardening Ni base alloy consisting essentially of not more than 0.1% by weight of C, 17.5 to 19% by weight of Cr, 3.5 to 4.5% by weight of Mo, 5.5 to 6.5% by weight of W, 8 to 12% by weight of Co, 1.8 to 2.2% by weight of A1, 2.0 to 3.0% by weight of Ti, not more than 0.01% by weight of B, not more than 0.15% by weight of Zr and the balance of Ni except incidental impurities.
Claim 4
Dependent Claim
83 words
A precipitation hardening Ni base alloy consisting essentially of not more than 0.1% by weight of C, 17.5 to 19% by weight of Cr, 3.5 to 4.5% by weight of Mo, 5.5 to 6.5% by weight of W, 8 to 12% by weight of Co, 1.8 to 2.2% by weight of A1, 2.0 to 3.0% by weight of Ti, not more than 0.01% by weight of B, not more than 0.15% by weight of Zr and the balance of Ni except incidental impurities.
Claim 5
Dependent Claim
71 words
A precipitation hardening Ni base alloy consisting essentially of about 0.05% by weight of C, about 18% by weight of Cr, about 4% by weight of Mo, about 6% by weight of W, about 10% by weight of Co, about 2% by weight of A1, about 2.5% by weight of Ti, about 0.003% by weight of B, about 0.07% by weight of Zr and the balance of Ni except incidental impurities.
Claim 6
Dependent Claim
71 words
A precipitation hardening Ni base alloy consisting essentially of about 0.05% by weight of C, about 18% by weight of Cr, about 4% by weight of Mo, about 6% by weight of W, about 10% by weight of Co, about 2% by weight of A1, about 2.5% by weight of Ti, about 0.003% by weight of B, about 0.07% by weight of Zr and the balance of Ni except incidental impurities.
Claim 7
Dependent Claim
16 words
The alloy of claim 1, wherein the carbon content is not more than 0.1% by weight.
Claim 8
Dependent Claim
15 words
The alloy of claim 1, wherein the chromium content is 17.5 to 19% by weight.
Claim 9
Dependent Claim
15 words
The alloy of claim 1, wherein the tungsten content is 5.5 to 6.5% by weight.
Claim 10
Dependent Claim
15 words
The alloy of claim 1, wherein the cobalt content is 8 to 12% by weight.
Claim 11
Dependent Claim
15 words
The alloy of claim 1, wherein the aluminum content is 1.8 to 2.2% by weight.
Claim 12
Dependent Claim
15 words
The alloy of claim 1, wherein the titanium content is 2.0 to 3.0% by weight.
Claim 13
Dependent Claim
16 words
The alloy of claim 1, wherein the boron content is not more than 0.1% by weight.
Claim 14
Dependent Claim
16 words
The alloy of claim 1, wherein the zirconium content is not more than 0.15% by weight.
References Cited (Backward Citations)
US3385698A
Cited
US3615376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |