US3892541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highly castable, weldable, oxidation resistant alloys
Assignee: Huntington Alloys Corp
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Filing: 1974-12-13
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Granted: 1975-07-01
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Expires: 1994-12-13
Abstract
Abstract Special highly castable and weldable heat resistant alloys containing nickel, manganese, silicon, chromium, carbon, iron, boron and molybdenum afford high temperature oxidation resistance and characteristics which render the alloys particularly suitable for the casting of thin section components for use at elevated temperatures under oxidizing conditions.
Inventors
- 👤 Jones Robin Mackay Forbes
- 👤 Walter Adrian Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:57
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/053; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12611; Y10T428/12771; Y10T428/12861; Y10T428/12986
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
41 words
A HIGHLY CASTABLE AND WELDABLE HEAT RESISTANT ALLOY AFFORDING HIGH TEMPERATURE OXIDATION RESISTANCE CONSISTING ESSENTIALLY OF (BY WEIGHT) UP TO ABOUT 1.4 PERCENT CARBON, LESS THAN 8.5 PERCENT MOLYBDENUM, THE CARBON AND MOLYBDENUM BEING SPECIALLY CORRELATED ACCORDING TO THE FOLLOWING RELATIONSHIP:
Claim 2
Dependent Claim
41 words
A HIGHLY CASTABLE AND WELDABLE HEAT RESISTANT ALLOY AFFORDING HIGH TEMPERATURE OXIDATION RESISTANCE CONSISTING ESSENTIALLY OF (BY WEIGHT) UP TO ABOUT 1.4 PERCENT CARBON, LESS THAN 8.5 PERCENT MOLYBDENUM, THE CARBON AND MOLYBDENUM BEING SPECIALLY CORRELATED ACCORDING TO THE FOLLOWING RELATIONSHIP:
Claim 3
Dependent Claim
24 words
An alloy in accordance with claim 1 wherein the carbon and molybdenum are correlated according to the following relationship: 5.4 <%Mo + 6(%C) <8.5
Claim 4
Dependent Claim
63 words
An alloy in accordance with claim 1 containing from about 0.005 to about 0.05 percent carbon, from about 5 to about 8 percent molybdenum, from about 2 to about 4 percent silicon, from about 0.2 to about 0.8 percent manganese, from about 19 to about 24 percent chromium, up to about 30 percent iron and from about 0.1 to about 0.5 percent boron.
Claim 5
Dependent Claim
24 words
An alloy in accordance with claim 3 wherein the carbon and molybdenum are correlated according to the following relationship: 5.4 <%Mo + 6(%C) <8.5.
Claim 6
Dependent Claim
14 words
An alloy in accordance with claim 1 containing at least about 10 percent iron.
Claim 7
Dependent Claim
14 words
An alloy in accordance with claim 1 containing at least about 15 percent iron.
Claim 8
Dependent Claim
65 words
An alloy in accordance with claim 1 containing from about 0.005 to about 0.05 percent carbon, from about 5 to about 8 percent molybdenum, from about 2 to about 4 percent silicon, from about 0.2 to about 0.8 percent manganese, from about 19 to about 24 percent chromium, from about 10 to about 30 percent iron and from about 0.1 to about 0.5 percent boron.
Claim 9
Dependent Claim
65 words
An alloy in accordance with claim 1 containing from about 0.005 to about 0.05 percent carbon, from about 5 to about 8 percent molybdenum, from about 2 to about 4 percent silicon, from about 0.2 to about 0.8 percent manganese, from about 19 to about 24 percent chromium, from about 15 to about 25 percent iron and from about 0.1 to about 0.5 percent boron.
Claim 10
Dependent Claim
57 words
An alloy in accordance with claim 1 containing from about 0.8 to about 1.2 percent carbon, from about 2.5 to about 3.5 percent silicon, from about 0.5 to about 3.0 percent manganese, from about 19 to about 23 percent chromium, from about 30 to about 47 percent iron, and from about 0.2 to about 0.4 percent boron.
Claim 11
Dependent Claim
14 words
An alloy in accordance with claim 9 containing less than about 45 percent iron.
Claim 12
Dependent Claim
30 words
As a new article of manufacture, a welded assembly of the alloy as set forth in claim 1, exhibiting freedom from cracking in sections of 1/2 -inch and greater thicknesses.
References Cited (Backward Citations)
US2938786A
Cited
US3758296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |