US4652428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant alloy
Assignee: Nippon Steel Nisshin Co Ltd
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Filing: 1985-10-10
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Granted: 1987-03-24
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Expires: 2005-10-10
Abstract
Abstract A corrosion resistant alloy comprising in % by weight up to 0.05% of C, 10.00 to 18.00% of Cr, up to 1.00% of Si, up to 1.00% of Mn, more than 0.040% but not more than 0.150% of P, up to 0.050% of S, up to 0.60% of Ni and 0.005 to 0.50% of sol.Al, the balance being Fe and unavoidable impurities. The alloy has an enhanced pickling performance of the hot rolled material and an improved workability of the cold rolled material.
Inventors
- 👤 Shigeaki Maruhashi
- 👤 Kazuo Hoshino
- 👤 Yoshihiro Uematsu
- 👤 Katsuhisa Miyakusu
- 👤 Takehiko Fujimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:12
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
96 words
A corrosion resistant alloy having enhanced pickling performance when hot rolled and improved workability when cold rolled and annealed consisting essentially of in % by weight of: up to 0.05% of C, 10.00 to 18.00% of Cr, up to 1.00% of Si, up to 1.00% of Mn, more than 0.040% but not more than 0.150% of P, up to 0.050% of S, up to 0.60% of Ni, 0.005 to 0.50% of sol. Al and one or both of up to 1.00% of Cu and up to 1.00% of Mo, the balance being Fe and unavoidable impurities.
Claim 2
Dependent Claim
96 words
A corrosion resistant alloy having enhanced pickling performance when hot rolled and improved workability when cold rolled and annealed consisting essentially of in % by weight of: up to 0.05% of C, 10.00 to 18.00% of Cr, up to 1.00% of Si, up to 1.00% of Mn, more than 0.040% but not more than 0.150% of P, up to 0.050% of S, up to 0.60% of Ni, 0.005 to 0.50% of sol. Al and one or both of up to 1.00% of Cu and up to 1.00% of Mo, the balance being Fe and unavoidable impurities.
Claim 3
Dependent Claim
21 words
The corrosion resistant alloy as set forth in claim 1 which contains P in an amount of from 0.045 to 0.15%.
Claim 4
Dependent Claim
121 words
A corrosion resistant alloy having an enhanced pickling performance when hot rolled and improved workability when cold rolled and annealed consisting essentially of, in % by weight, of up to 0.05% of C, 10.00 to 18.00% of Cr, up to 1.00% of Si, up to 1.00% of Mn, more than 0.040% but not more than 0.150% of P, up to 0.050% of S, up to 0.60% of Ni, 0.005 to 0.50% of sol. Al, one or both of up to 1.00% of Cu and up to 1.00% of Mo and one or both of up to 0.50% of Ti and up to 0.50% of Nb in an amount of up to 0.50% in total, the balance being Fe and unavoidable impurities.
Claim 5
Dependent Claim
121 words
A corrosion resistant alloy having an enhanced pickling performance when hot rolled and improved workability when cold rolled and annealed consisting essentially of, in % by weight, of up to 0.05% of C, 10.00 to 18.00% of Cr, up to 1.00% of Si, up to 1.00% of Mn, more than 0.040% but not more than 0.150% of P, up to 0.050% of S, up to 0.60% of Ni, 0.005 to 0.50% of sol. Al, one or both of up to 1.00% of Cu and up to 1.00% of Mo and one or both of up to 0.50% of Ti and up to 0.50% of Nb in an amount of up to 0.50% in total, the balance being Fe and unavoidable impurities.
Claim 6
Dependent Claim
21 words
The corrosion resistant alloy as set forth in claim 3 which contains P in an amount of from 0.045 to 0.15%.
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) | 1990-03-23 | 1990-09-22 | 1991-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-23 | 1994-09-22 | 1995-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-23 | 1998-09-22 | 1999-03-24 | $7700.00 | Window Closed / Lapsed |