US3953285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel-chromium-silicon brazing filler metal
Assignee: Energy Research and Development Administration ERDA
•
Filing: 1973-04-25
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Granted: 1976-04-27
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Expires: 1993-04-25
Abstract
Abstract A brazing filler metal containing, by weight percent, 23-35% chromium, 9-12% silicon, a maximum of 0.15% carbon, and the remainder nickel. The maximum amount of elements other than those noted above is 1.00%.
Inventors
- 👤 Angelo J. Martini
- 👤 Bruce R. Gourley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:49
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3033; B23K35/304; Y; Y10; Y10S; Y10S376/00; Y10S376/90
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
72 words
A corrosion resistant joint between AM-350 stainless steel fuel rod grid components which exhibits no chromium depleted phase comprising a brazement formed by brazing said components with a nickel-base brazing filler metal having a melting temperature within the range of 2075°F. to 2150°F. consisting essentially of, in weight percent, 23% to 35% chromium, 9% to 12% silicon, a maximum of 0.15% carbon, a maximum of 1.00% other elements and the balance nickel.
Claim 2
Dependent Claim
72 words
A corrosion resistant joint between AM-350 stainless steel fuel rod grid components which exhibits no chromium depleted phase comprising a brazement formed by brazing said components with a nickel-base brazing filler metal having a melting temperature within the range of 2075°F. to 2150°F. consisting essentially of, in weight percent, 23% to 35% chromium, 9% to 12% silicon, a maximum of 0.15% carbon, a maximum of 1.00% other elements and the balance nickel.
Claim 3
Dependent Claim
20 words
The joint of claim 1 wherein said brazing filler metal contains 29.0% to 31.0% chromium and 9.8% to 10.3% silicon.
References Cited (Backward Citations)
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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) | 1979-04-27 | 1979-10-27 | 1980-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-27 | 1983-10-27 | 1984-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-27 | 1987-10-27 | 1988-04-27 | $7700.00 | Window Closed / Lapsed |