US3201233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crack resistant stainless steel alloys
Assignee: Westinghouse Electric Corp
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Filing: 1962-06-13
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Granted: 1965-08-17
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Expires: 1982-06-13
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:45
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/001; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053; B23K35/308; B23K35/3086; C22C38/18; C22C38/40; C22C38/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
AN AUSTENITIC STAINLESS STEEL ALLOY OF GOOD WELDABILITY COMPRISING, BY WEIGHT, FROM 14% TO 20% CHROMIUM, FROM 15% TO 30% NICKEL, FROM 7.5% TO 15% MANGANESE, FROM 0.5% TO 3.75% MOLYBDENUM, THE TOTAL OF MANGANESE AND MOLYBDENUM LYING IN THE RANGE FROM 9% TO 16%, FROM 0.01% TO 0.08% CARBON, FROM 0.01% TO 0.35% NITROGEN, UP TO ABOUT 1% SILICON, UP TO 1% VANADIUM, UP TO 0.03% BORON, UP TO 0.06% ZIRCONIUM, UP TO 1.5% COLUMBIUM, UP TO 2.5% TITANIUM AND THE BALANCE IRON AND SMALL AMOUNTS OF INCIDENTAL IMPURITIES, THE $(C) VALUE OF THE ALLOY BEING GREATER THAN 1 TO INSURE AN ADEQUATE LEVEL OF STRENGTH AND RUPTURE DUCTILITY AND BEING LESS THAN 3.75 TO INSURE THAT SERIOUS LOSS OF IMPACT STRENGTH AFTER LONG TIME SERVICE AT ELEVATED TEMPERATURES DOES NOT OCCUR, THE F (C) VALUE OF THE ALLOY BEING GREATER THAN 14 TO ASSURE THAT THE ALLOY IS FULLY AUSTENITIC.
Claim 2
Dependent Claim
152 words
AN AUSTENITIC STAINLESS STEEL ALLOY OF GOOD WELDABILITY COMPRISING, BY WEIGHT, FROM 14% TO 20% CHROMIUM, FROM 15% TO 30% NICKEL, FROM 7.5% TO 15% MANGANESE, FROM 0.5% TO 3.75% MOLYBDENUM, THE TOTAL OF MANGANESE AND MOLYBDENUM LYING IN THE RANGE FROM 9% TO 16%, FROM 0.01% TO 0.08% CARBON, FROM 0.01% TO 0.35% NITROGEN, UP TO ABOUT 1% SILICON, UP TO 1% VANADIUM, UP TO 0.03% BORON, UP TO 0.06% ZIRCONIUM, UP TO 1.5% COLUMBIUM, UP TO 2.5% TITANIUM AND THE BALANCE IRON AND SMALL AMOUNTS OF INCIDENTAL IMPURITIES, THE $(C) VALUE OF THE ALLOY BEING GREATER THAN 1 TO INSURE AN ADEQUATE LEVEL OF STRENGTH AND RUPTURE DUCTILITY AND BEING LESS THAN 3.75 TO INSURE THAT SERIOUS LOSS OF IMPACT STRENGTH AFTER LONG TIME SERVICE AT ELEVATED TEMPERATURES DOES NOT OCCUR, THE F (C) VALUE OF THE ALLOY BEING GREATER THAN 14 TO ASSURE THAT THE ALLOY IS FULLY AUSTENITIC.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |