Titanium-bearing chromium-nickel-copper stainless steel
Abstract
Abstract CHROMIUM-NICKEL-COPPER STAINLESS STEEL, ADDITIONALLY CONTAINING TITANIUM, AND OF SUCH COMPOSITION BALANCE, I.E., AMOUNT AND RELATION BETWEEN THE SEVERAL INGREDIENTS CHROMIUM, NICKEL, COPPER AND TITANIUM, AS TO BE COMPARATIVELY DUCTILE AND READILY WORKABLE IN ONE CONDITION OF HEAT-TREATMENT (ANNEALED CONDITION) WITH A MINIMUM OF HARDENING DURING SUCH WORKING AND YET READILY PRECIPITATION-HARDENED WITHIN THE COLD-WORKED PORTIONS THEREOF BY SIMPLE HEAT-TREATMENT AT COMPARATIVELY LOW TEMPERATURES (BELOW THE TEMPERATURE RESULTING IN HEAT TINT AND SCALING), GIVING DESIRED ARTICLES OF ULTIMATE USE WITH HARDENED SURFACES BUT WITH OTHER PORTIONS OF GOOD RETAINED DUCTILITY AND TOUGHNESS. MORE PARTICULARLY, STEEL, AND ARTICLES FASHIONED THEREOF, ESSENTIALLY CONSISTING OF 10% TO 25% CHROMIUM-MOLYBDENUM, WITH CHROMIUM AT LEAST 10% AND MOLYBDENUM UP TO 5%; 5% TO 20% NICKELMANGANESE, WITH NICKEL AT LEAST 4% AND MAGANESE UP TO 15%; 1% TO 5% COPPER; .3% TO 4% TITANIUM; AND REMAINDER SUBSTANTIALLY ALL IRON.
Inventors
- 👤 Harry Tanczyn
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |