US4062704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum alloys possessing improved resistance weldability
Assignee: Rio Tinto Switzerland AG
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Filing: 1976-07-09
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Granted: 1977-12-13
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Expires: 1996-07-09
Abstract
Abstract Aluminum alloys exhibiting improved resistance weldability are prepared which comprise 1.9-5.5% copper, up to 1.5% iron, up to 1.2% silicon, up to 1.2% manganese, 0.02-2.0% magnesium, and from 0.03-0.20% vanadium, balance essentially aluminum. The alloys of the present invention are particularly suited for automotive metal working applications.
Inventors
- 👤 Philip R. Sperry
- 👤 William C. Setzer
- 👤 Lloyd E. Damon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:56
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/12; C22C21/16
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
63 words
A wrought article exhibiting reduced electrical conductivity, increased electrical resistivity, improved resistance weldability plus good tensile properties prepared from an aluminum base alloy consisting essentially of from 2.2 to 3.0% copper, up to 1.5% iron, up to 1.2% silicon, up to 1.2% manganese, from 0.02 to 2.0% magnesium, and from 0.03 to 0.20% vanadium, balance aluminum, wherein vanadium is retained in solid solution.
Claim 2
Dependent Claim
63 words
A wrought article exhibiting reduced electrical conductivity, increased electrical resistivity, improved resistance weldability plus good tensile properties prepared from an aluminum base alloy consisting essentially of from 2.2 to 3.0% copper, up to 1.5% iron, up to 1.2% silicon, up to 1.2% manganese, from 0.02 to 2.0% magnesium, and from 0.03 to 0.20% vanadium, balance aluminum, wherein vanadium is retained in solid solution.
Claim 3
Dependent Claim
42 words
The article of claim 1 wherein said alloy in addition consists of up to 0.10% chromium, up to 2.3% nickel, up to 0.3% zinc, up to 0.15% zirconium, up to 0.2% titanium, and others up to 0.05% each, total up to 0.15%.
Claim 4
Dependent Claim
32 words
The article of claim 1 wherein said alloy consists essentially of from 0.25 to 0.50% iron, from 0.2 to 0.50% silicon, from 0.10 to 0.40% manganese, and from 0.30 to 0.60% magnesium.
Claim 5
Dependent Claim
38 words
The article of claim 3 wherein said alloy in addition consists of up to 0.10% chromium, up to 0.15% zirconium, up to 0.25% zinc, up to 0.15% titanium, and others up to 0.05% each, total up to 0.15%.
Claim 6
Dependent Claim
13 words
The article of claim 1 wherein said alloy is in the annealed condition.
Claim 7
Dependent Claim
16 words
The article of claim 1 wherein said alloy is in the annealed and cold worked condition.
Claim 8
Dependent Claim
64 words
A resistance welded article having reduced electrical conductivity, increased electrical resistivity, improved resistance weldability plus good tensile properties prepared from an aluminum base alloy consisting essentially of from 2.2 to 3.0% copper, up to 1.5% iron, up to 1.2% silicon, up to 1.2% manganese, from 0.02 to 2.0% magnesium, and from 0.03 to 0.20% vanadium, balance aluminum, wherein vanadium is retained in solid solution.
Claim 9
Dependent Claim
64 words
A resistance welded article having reduced electrical conductivity, increased electrical resistivity, improved resistance weldability plus good tensile properties prepared from an aluminum base alloy consisting essentially of from 2.2 to 3.0% copper, up to 1.5% iron, up to 1.2% silicon, up to 1.2% manganese, from 0.02 to 2.0% magnesium, and from 0.03 to 0.20% vanadium, balance aluminum, wherein vanadium is retained in solid solution.
Claim 10
Dependent Claim
42 words
The article of claim 7 wherein said alloy in addition consists of up to 0.10% chromium, up to 2.3% nickel, up to 0.3% zinc, up to 0.15% zirconium, up to 0.2% titanium, and others up to 0.05% each, total up to 0.15%.
Claim 11
Dependent Claim
32 words
The article of claim 7 wherein said alloy consists essentially of from 0.25 to 0.50% iron, from 0.2 to 0.50% silicon, from 0.10 to 0.40% manganese, and from 0.30 to 0.60% magnesium.
Claim 12
Dependent Claim
38 words
The article of claim 9 wherein said alloy in addition consists of up to 0.10% chromium, up to 0.15% zirconium, up to 0.25% zinc, up to 0.15% titanium, and others up to 0.05% each, total up to 0.15%.
Claim 13
Dependent Claim
13 words
The article of claim 7 wherein said alloy is in the annealed condition.
Claim 14
Dependent Claim
16 words
The article of claim 7 wherein said alloy is in the annealed and cold worked condition.
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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) | 1980-12-12 | 1981-06-13 | 1981-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-12 | 1985-06-13 | 1985-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-12 | 1989-06-13 | 1989-12-13 | $7700.00 | Window Closed / Lapsed |