US3833360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Super-high-speed steels of high cutting capacity
Assignee: Individual
•
Filing: 1972-12-29
•
Granted: 1974-09-03
•
Expires: 1992-12-29
Abstract
Abstract Mo-based super-high-speed steel of high cutting capacity, containing, in addition to the iron and the usual alloying and contaminating elements, also 1.05 to 1.50 weight percent of C, 4.0 to 5.0 weight percent of Cr, 5 to 6 weight percent of W, 0.05 to 2.0 weight percent of S, 0.05 to 0.50 weight percent of Pb and optionally being alloyed with Co, improved in that it contains 6.05 to 6.95 weight per cent of Mo, 2.16 to 4.50 weight percent of V, 0.10 to 4.0 weight percent of Nb and 0.11 to 0.25 weight percent of N2.
Inventors
- 👤 H Giflo
- 👤 S Enekes
- 👤 P Zambo
- 👤 J Vamosi
- 👤 J Valko
- 👤 G Ivan
- 👤 J Molnar
- 👤 J Sziklavari
- 👤 I Farkas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:53
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/001; C22C38/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
17 words
A Mo-based super-high-speed steel of high cutting capacity consisting essentially of the following elements in weight percent:
Claim 2
Dependent Claim
26 words
A steel according to claim 1 wherein the V content is 2.16 to 3.0 weight percent and the Nb content is 0.10 to 2.0 weight percent.
Claim 3
Dependent Claim
26 words
A steel according to Claim 1 wherein the V content is 3.05 to 3.50 weight percent and the Nb content is 0.10 to 2.0 weight percent.
Claim 4
Dependent Claim
26 words
A steel according to claim 1 wherein the V content is 3.55 to 4.00 weight percent and the Nb content is 0.10 to 2.0 weight percent.
Claim 5
Dependent Claim
26 words
A steel according to claim 1 wherein the V content is 4.00 to 4.50 weight percent and the Nb content is 2.05 to 4.00 weight percent.
References Cited (Backward Citations)
US1831946A
Cited
US2147121A
Cited
US2343069A
Cited
US2598714A
Cited
US2801916A
Cited
US2983601A
Cited
US3012879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |