US4006015A
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Ni-Cr-W alloys
Assignee: Proterial Ltd
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Filing: 1975-07-29
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Granted: 1977-02-01
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Expires: 1995-07-29
Abstract
Abstract The present invention provides Ni-Cr-W alloys consisting essentially of, by weight, 0.001 - 0.1% carbon, 0.05 - 0.7% titanium and/or niobium, 18 - 25% chromium and 16 - 22% tungsten, the total content of chromium plus tungsten being from 38 to 44% and the balance being essentially nickel with incidental impurities.
Inventors
- 👤 Rikizo Watanabe
- 👤 Yoshitaka Chiba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:59
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/055
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
51 words
A Ni-Cr-W alloy, which consists essentially of, by weight, 0.001 - 0.1% carbon, 0.05 - 0.7% titanium, niobium or a mixture thereof, 18 - 25% chromium and 16 - 22% tungsten, the total content of chromium plus tungsten being from 36 to 44%, the balance being essentially nickel with incidental impurities.
Claim 2
Dependent Claim
51 words
A Ni-Cr-W alloy, which consists essentially of, by weight, 0.001 - 0.1% carbon, 0.05 - 0.7% titanium, niobium or a mixture thereof, 18 - 25% chromium and 16 - 22% tungsten, the total content of chromium plus tungsten being from 36 to 44%, the balance being essentially nickel with incidental impurities.
Claim 3
Dependent Claim
84 words
A Ni-Cr-W alloy, which consists essentially of, by weight, 0.001 - 0.1% carbon, 0.05 - 0.7% titanium, niobium or a mixture thereof, 18 - 25% chromium and 16 - 22% tungsten, the total content of chromium plus tungsten being from 36 to 44%, further containing at least one selected from the group consisting of 0.001 - 0.05% magnesium, 0.001 - 0.05% boron, 0.01 - 0.12% zirconium, 0.005 - 0.2% yttrium and 0.01 - 0.5% hafnium, and the balance being essentially nickel with incidental impurities.
Claim 4
Dependent Claim
84 words
A Ni-Cr-W alloy, which consists essentially of, by weight, 0.001 - 0.1% carbon, 0.05 - 0.7% titanium, niobium or a mixture thereof, 18 - 25% chromium and 16 - 22% tungsten, the total content of chromium plus tungsten being from 36 to 44%, further containing at least one selected from the group consisting of 0.001 - 0.05% magnesium, 0.001 - 0.05% boron, 0.01 - 0.12% zirconium, 0.005 - 0.2% yttrium and 0.01 - 0.5% hafnium, and the balance being essentially nickel with incidental impurities.
Claim 5
Dependent Claim
89 words
A Ni-Cr-W alloy, which consists essentially of, by weight, 0.001 - 0.1% carbon, 0.05 - 0.7% titanium, niobium or a mixture thereof, 18 - 25% chromium and 16 - 22% tungsten, the total content of chromium plus tungsten being from 36 to 44%, and 0.1 - 1.0% aluminum, further containing at least one selected from the group consisting of 0.001 - 0.05% magnesium, 0.001 - 0.05% boron, 0.01 - 0.12% zirconium, 0.005 - 0.2% yttrium and 0.01 - 0.5% hafnium, and the balance being essentially nickel with incidental impurities.
Claim 6
Dependent Claim
89 words
A Ni-Cr-W alloy, which consists essentially of, by weight, 0.001 - 0.1% carbon, 0.05 - 0.7% titanium, niobium or a mixture thereof, 18 - 25% chromium and 16 - 22% tungsten, the total content of chromium plus tungsten being from 36 to 44%, and 0.1 - 1.0% aluminum, further containing at least one selected from the group consisting of 0.001 - 0.05% magnesium, 0.001 - 0.05% boron, 0.01 - 0.12% zirconium, 0.005 - 0.2% yttrium and 0.01 - 0.5% hafnium, and the balance being essentially nickel with incidental impurities.
Claim 7
Dependent Claim
51 words
A Ni-Cr-W alloy, which consists essentially of, by weight, 0.001 - 0.06% carbon, 0.1 - 0.6% titanium, niobium or a mixture thereof, 21 - 25% chromium and 16 - 20% tungsten, the total content of chromium plus tungsten being from 39 to 43%, the balance being essentially nickel with incidental impurities.
Claim 8
Dependent Claim
51 words
A Ni-Cr-W alloy, which consists essentially of, by weight, 0.001 - 0.06% carbon, 0.1 - 0.6% titanium, niobium or a mixture thereof, 21 - 25% chromium and 16 - 20% tungsten, the total content of chromium plus tungsten being from 39 to 43%, the balance being essentially nickel with incidental impurities.
Claim 9
Dependent Claim
84 words
A Ni-Cr-W alloy, which consists essentially of, by weight, 0.001 - 0.06% carbon, 0.1 - 0.6% titanium, niobium or a mixture thereof, 21 - 25% chromium and 16 - 20% tungsten, the total content of chromium plus tungsten being from 39 to 43%, further containing at least one selected from the group consisting of 0.001 - 0.02% magnesium, 0.001 - 0.01% boron, 0.02 - 0.08% zirconium, 0.01 - 0.1% yttrium and 0.05 - 0.3% hafnium, and the balance being essentially nickel with incidental impurities.
Claim 10
Dependent Claim
84 words
A Ni-Cr-W alloy, which consists essentially of, by weight, 0.001 - 0.06% carbon, 0.1 - 0.6% titanium, niobium or a mixture thereof, 21 - 25% chromium and 16 - 20% tungsten, the total content of chromium plus tungsten being from 39 to 43%, further containing at least one selected from the group consisting of 0.001 - 0.02% magnesium, 0.001 - 0.01% boron, 0.02 - 0.08% zirconium, 0.01 - 0.1% yttrium and 0.05 - 0.3% hafnium, and the balance being essentially nickel with incidental impurities.
Claim 11
Dependent Claim
87 words
A Ni-Cr-W alloy, which consists essentially of, by weight, 0.001 - 0.06% carbon, 0.1 - 0.6% titanium, niobium or a mixture thereof, 21 - 25% chromium, 16 - 20% tungsten, the total content of chromium plus tungsten being from 39 to 43%, and 0.1 - 0.5% aluminum, additionally at least one selected from the group consisting of 0.001 - 0.02% magnesium, 0.001 - 0.01% boron, 0.02 - 0.08% zirconium, 0.01 - 0.1% yttrium and 0.05 - 0.3% hafnium, and the balance being essentially nickel with incidental impurities.
Claim 12
Dependent Claim
87 words
A Ni-Cr-W alloy, which consists essentially of, by weight, 0.001 - 0.06% carbon, 0.1 - 0.6% titanium, niobium or a mixture thereof, 21 - 25% chromium, 16 - 20% tungsten, the total content of chromium plus tungsten being from 39 to 43%, and 0.1 - 0.5% aluminum, additionally at least one selected from the group consisting of 0.001 - 0.02% magnesium, 0.001 - 0.01% boron, 0.02 - 0.08% zirconium, 0.01 - 0.1% yttrium and 0.05 - 0.3% hafnium, and the balance being essentially nickel with incidental impurities.
Claim 13
Dependent Claim
18 words
The Ni-Cr-W alloy of claim 5, wherein only 0.02 - 0.08% zirconium is selected as an additional element.
Claim 14
Dependent Claim
19 words
The Ni-Cr-W alloy of claim 5, wherein 0.1 - 0.6% titanium is selected from both of titanium and niobium.
Claim 15
Dependent Claim
19 words
The Ni-Cr-W alloy of claim 6, wherein 0.1 - 0.6% titanium is selected from both of titanium and niobium.
Claim 16
Dependent Claim
18 words
The Ni-Cr-W alloy of claim 5, wherein 0.1 - 0.6% titanium and 0.02 - 0.08% zirconium are selected.
Claim 17
Dependent Claim
22 words
The Ni-Cr-W alloy of claim 5, wherein 0.1 - 0.6% titanium, 0.001 - 0.02% magnesium and 0.02 - 0.08% zirconium are selected.
Claim 18
Dependent Claim
13 words
The Ni-Cr-W alloy of claim 4, wherein the chromium content is about 23%.
Claim 19
Dependent Claim
13 words
The Ni-Cr-W alloy of claim 5, wherein the chromium content is about 23%.
Claim 20
Dependent Claim
13 words
The Ni-Cr-W alloy of claim 6, wherein the chromium content is about 23%.
Claim 21
Dependent Claim
25 words
The Ni-Cr-W alloy of claim 5, wherein the chromium content is about 23%, and 0.1 - 0.6% titanium and 0.02 - 0.08% zirconium are selected.
Claim 22
Dependent Claim
29 words
The Ni-Cr-W alloy of claim 5, wherein the chromium content is about 23%, and 0.1 - 0.6% titanium, 0.001 - 0.02% magnesium and 0.02 - 0.08% zirconium are selected.
Claim 23
Dependent Claim
13 words
The Ni-Cr-W alloy of claim 4, wherein the tungsten content is about 18%.
Claim 24
Dependent Claim
13 words
The Ni-Cr-W alloy of claim 5, wherein the tungsten content is about 18%.
Claim 25
Dependent Claim
13 words
The Ni-Cr-W alloy of claim 6, wherein the tungsten content is about 18%.
Claim 26
Dependent Claim
25 words
The Ni-Cr-W alloy of claim 5, wherein the tungsten content is about 18%, and 0.1 - 0.6% titanium and 0.02 - 0.08% zirconium are selected.
Claim 27
Dependent Claim
29 words
The Ni-Cr-W alloy of claim 5, wherein the tungsten content is about 18%, and 0.1 - 0.6% titanium, 0.001 - 0.02% magnesium and 0.02 - 0.08% zirconium are selected.
Claim 28
Dependent Claim
43 words
The Ni-Cr-W alloy of claim 5, wherein the carbon content is about 0.03%, the chromium content about 23%, the tungsten content about 18%, the total content of chromium plus tungsten about 41%, the titanium content about 0.3% and the zirconium content about 0.05%.
Claim 29
Dependent Claim
43 words
The Ni-Cr-W alloy of claim 5, wherein the carbon content is about 0.03%, the chromium content about 23%, the tungsten content about 18%, the total content of chromium plus tungsten about 41%, the titanium content about 0.4% and the zirconium content about 0.1%.
Claim 30
Dependent Claim
47 words
The Ni-Cr-W alloy of claim 5, wherein the carbon content about 0.02%, the chromium content about 23%, the tungsten content about 18%, the total content of chromium plus tungsten about 41%, the titanium content about 0.3%, the magnesium content about 0.004%, and the zirconium content about 0.06%.
Claim 31
Dependent Claim
9 words
Heat resistant parts comprising the alloy of claim 5.
Claim 32
Dependent Claim
13 words
Heat exchangers for atomic energy steel-making process, comprising the alloy of claim 5.
References Cited (Backward Citations)
US3403998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |