US4089679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel alloy for zinc and aluminum die casting
Assignee: Pennsylvania Steel Corp
•
Filing: 1976-10-18
•
Granted: 1978-05-16
•
Expires: 1996-10-18
Abstract
Abstract A steel alloy composition consists essentially of the following ingredients by weight in the range: Carbon - 0.12 to 0.17%; Manganese - 0.75 to 0.85%; Silicon - 0.15 to 0.35%; Chromium - 1.40 to 1.85%; Molybdenum - 0.40 to 0.50%; Tungsten - 0.10 to 0.15%; Iron - the balance. The method of making nozzles, noses, plungers, and shot sleeves which includes the above composition, for use in zinc and aluminum die casting includes machining the product and heat-treating.
Inventors
- 👤 Kenneth Zecman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:56
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
29 words
A steel alloy composition consisting essentially of the following ingredients by weight approximately: ______________________________________
Carbon .15%
Manganese .67%
Silicon .30%
Chromium 1.77%
Molybdenum .47%
Tungsten .11%
Iron Balance.
______________________________________
Claim 2
Dependent Claim
29 words
A steel alloy composition consisting essentially of the following ingredients by weight approximately: ______________________________________
Carbon .15%
Manganese .67%
Silicon .30%
Chromium 1.77%
Molybdenum .47%
Tungsten .11%
Iron Balance.
______________________________________
Claim 3
Dependent Claim
29 words
A steel alloy composition consisting essentially of the following ingredients by weight approximately: ______________________________________
Carbon .15%
Manganese .76%
Silicon .30%
Chromium 1.83%
Molybdenum .45%
Tungsten .12%
Iron Balance.
______________________________________
Claim 4
Dependent Claim
29 words
A steel alloy composition consisting essentially of the following ingredients by weight approximately: ______________________________________
Carbon .15%
Manganese .76%
Silicon .30%
Chromium 1.83%
Molybdenum .45%
Tungsten .12%
Iron Balance.
______________________________________
Claim 5
Dependent Claim
25 words
The alloy composition as defined in claim 1, wherein the alloy has a Brinell hardness in the range of from about 210 to about 300.
Claim 6
Dependent Claim
25 words
The alloy composition as defined in claim 2, wherein the alloy has a Brinell hardness in the range of from about 210 to about 300.
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) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |