US4025314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel-chromium filler metal
Assignee: Huntington Alloys Corp
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Filing: 1975-12-17
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Granted: 1977-05-24
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Expires: 1995-12-17
Abstract
Abstract A nickel-chromium-titanium filler alloy for inert gas shielded-arc welding of 50% Cr, 50% Ni type alloys. The wrought alloy is characterized by a single phase austenitic microstructure and contains, by weight, from about 42 to about 46% chromium, from about 0.1 to about 1.8% titanium, from about 0.01 to about 0.1% carbon, and up to about 0.1% magnesium with the balance, apart from incidental elements, essentially nickel. The alloy provides sound welds having a two phase microstructure that afford elevated temperature strength and corrosion resistance equal to that afforded by base metals of the 50% Cr, 50% Ni type.
Inventors
- 👤 Edward Peter Sadowski
- 👤 Piyush Champakal Shah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:29
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3033; B23K35/304; C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/052; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12639; Y10T428/12771; Y10T428/12861; Y10T428/12944
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
66 words
A wrought inert gas shielded-arc filler alloy consisting essentially of, by weight, from about 42% to about 46% chromium, from about 0.1% to about 1.8% titanium, from about 0.01% to about 0.1% carbon, and up to about 0.1% magnesium, with the balance, apart from incidental elements, nickel; said alloy being characterized by an austenitic microstructure and capability for being hot and cold worked to wire form.
Claim 2
Dependent Claim
66 words
A wrought inert gas shielded-arc filler alloy consisting essentially of, by weight, from about 42% to about 46% chromium, from about 0.1% to about 1.8% titanium, from about 0.01% to about 0.1% carbon, and up to about 0.1% magnesium, with the balance, apart from incidental elements, nickel; said alloy being characterized by an austenitic microstructure and capability for being hot and cold worked to wire form.
Claim 3
Dependent Claim
20 words
A wrought inert gas shielded-arc filler alloy in accordance with claim 1, containing from about 0.3% to about 1% titanium.
Claim 4
Dependent Claim
18 words
A wrought inert gas shielded-arc filler alloy in accordance with claim 1, containing at least about 0.02% carbon.
Claim 5
Dependent Claim
19 words
A wrought gas shielded-arc filler alloy in accordance with claim 1, containing from about 0.005% to about 0.06% magnesium.
Claim 6
Dependent Claim
36 words
A wrought inert gas shielded-arc filler alloy in accordance with claim 1, containing in the presence of at least about 0.005% magnesium, a carbon content above about 0.02%, and from about 0.3% to about 1% titanium.
Claim 7
Independent Claim
110 words
A method for welding a 50% Cr, 50% Ni type alloy with a filler alloy which comprises: using as said filler alloy a chromium-nickel-titanium alloy in which the chromium content is from about 42% to about 46%, the titanium content is from about 0.1% to about 1.8%, the carbon content is from about 0.01% to about 0.1%, and up to about 0.1% magnesium, with the balance, apart from incidental elements, essentially nickel, said alloy being characterized by an austenitic microstructure; and thereafter arc welding said 50% Cr, 50% Ni type alloy with said filler alloy under an inert gas whereupon sound, ductile, corrosion-resistant, oxidation-resistant, substantially crack-free weld deposits are obtained.
Claim 8
Independent Claim
110 words
A method for welding a 50% Cr, 50% Ni type alloy with a filler alloy which comprises: using as said filler alloy a chromium-nickel-titanium alloy in which the chromium content is from about 42% to about 46%, the titanium content is from about 0.1% to about 1.8%, the carbon content is from about 0.01% to about 0.1%, and up to about 0.1% magnesium, with the balance, apart from incidental elements, essentially nickel, said alloy being characterized by an austenitic microstructure; and thereafter arc welding said 50% Cr, 50% Ni type alloy with said filler alloy under an inert gas whereupon sound, ductile, corrosion-resistant, oxidation-resistant, substantially crack-free weld deposits are obtained.
Claim 9
Dependent Claim
27 words
The method for welding a 50% Cr, 50% Ni alloy as defined in claim 6, wherein said filler alloy contains from about 0.3% to about 1% titanium.
Claim 10
Dependent Claim
25 words
A method for welding a 50% Cr, 50% Ni alloy as defined in claim 6, wherein said filler alloy contains at least about 0.02% carbon.
Claim 11
Dependent Claim
43 words
A method for welding a 50% Cr, 50% Ni alloy as defined in claim 6, wherein said filler alloy contains in the presence of at least about 0.005% magnesium, a carbon content above about 0.02% and from about 0.3% to about 1% titanium.
Claim 12
Dependent Claim
82 words
A welded structure, said structure being comprised of at least one member that is a 50% Cr, 50% Ni alloy and a weld deposit having a two phase microstructure, said weld deposit being prepared with a filler alloy characterized by a single phase microstructure and containing from about 42% to about 46% chromium, from about 0.1% to about 1.8% titanium, from about 0.01% to about 0.1% carbon, and up to about 0.1% magnesium with the balance, apart from incidental elements, essentially nickel.
Claim 13
Dependent Claim
82 words
A welded structure, said structure being comprised of at least one member that is a 50% Cr, 50% Ni alloy and a weld deposit having a two phase microstructure, said weld deposit being prepared with a filler alloy characterized by a single phase microstructure and containing from about 42% to about 46% chromium, from about 0.1% to about 1.8% titanium, from about 0.01% to about 0.1% carbon, and up to about 0.1% magnesium with the balance, apart from incidental elements, essentially nickel.
Claim 14
Dependent Claim
31 words
A welded structure as defined in claim 10 wherein said filler alloy contains from about 0.3% to about 1% titanium, at least about 0.02% carbon, and up to about 0.06% magnesium.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |