Patent US4043840A successfully refreshed from Google Patents.
US4043840A
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Aluminum alloys possessing improved resistance weldability
Assignee: Rio Tinto Switzerland AG
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Filing: 1976-07-09
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Granted: 1977-08-23
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Expires: 1996-07-09
Abstract
Abstract Aluminum alloys exhibiting improved resistance weldability are prepared which comprise 2.0-6.0% magnesium, up to 0.40% iron, up to 0.40% silicon, 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
2026-11-05 06:21
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/06; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
54 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 2.0 to 6.0% magnesium, up to 0.40% iron, up to 0.40% silicon, and from 0.03 to 0.20% vanadium, balance aluminum, wherein vanadium is retained in solid solution.
Claim 2
Dependent Claim
54 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 2.0 to 6.0% magnesium, up to 0.40% iron, up to 0.40% silicon, and from 0.03 to 0.20% vanadium, balance aluminum, wherein vanadium is retained in solid solution.
Claim 3
Dependent Claim
50 words
The article of claim 1 wherein said article in addition consists of up to 0.4% copper, up to 6.0% manganese, up to 0.4% chromium, up to 0.3% zinc, up to 0.3% titanium, up to 0.15% zirconium, up to 0.3% nickel, and others up to 0.05% each, total up to 0.15%.
Claim 4
Dependent Claim
36 words
The article of claim 1 wherein said alloy consists essentially of from about 2.0 to 5.0% magnesium, from about 0.05 to 0.40% iron, from about 0.05 to 0.40% silicon, and from about 0.03 to 0.20% vanadium.
Claim 5
Dependent Claim
62 words
The article of claim 3 wherein said article in addition consists of from about 0.05 to 0.2% copper, from about 0.1 to 0.5% manganese, from about 0.1 to 0.4% chromium, up to about 0.3% nickel, from about 0.1 to 0.3% zinc, up to 0.15% zirconium, from about 0.1 to 0.3% titanium, and others up to 0.05% each, total up to about 0.15%.
Claim 6
Dependent Claim
37 words
The article of claim 1 wherein said alloy consists essentially of from 2.0 to 3.0% magnesium, up to about 0.45% of an element selected from the group consisting of iron, silicon, and mixtures thereof, balance essentially aluminum.
Claim 7
Dependent Claim
53 words
The article of claim 5 wherein said article in addition consists of up to about 0.01% copper, up to about 0.6% manganese, up to about 0.35% chromium, up to about 0.25% zinc, up to about 0.15% zirconium, up to about 0.20% titanium, others up to about 0.05% each, total up to about 0.15%.
Claim 8
Dependent Claim
59 words
The article of claim 1 wherein said alloy consists essentially of from 4.0 to 5.0% magnesium, up to about 0.35% iron, up to about 0.20% silicon, up to about 0.15% copper, from 0.20 to 0.50% manganese, up to about 0.10% chromium, up to about 0.25% zinc, up to about 0.15% zirconium, and up to about 0.10% titanium, balance aluminum.
Claim 9
Dependent Claim
13 words
The article of claim 1 wherein said article is in the annealed condition.
Claim 10
Dependent Claim
16 words
The article of claim 1 wherein said article is in the annealed and cold worked condition.
Claim 11
Dependent Claim
55 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 2.0 to 6.0% magnesium, up to 0.40% iron, up to 0.40% silicon, and from 0.03 to 0.20% vanadium, balance aluminum, wherein vanadium is retained in solid solution.
Claim 12
Dependent Claim
55 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 2.0 to 6.0% magnesium, up to 0.40% iron, up to 0.40% silicon, and from 0.03 to 0.20% vanadium, balance aluminum, wherein vanadium is retained in solid solution.
Claim 13
Dependent Claim
52 words
The article of claim 10 wherein said aluminum base alloy in addition consists of up to 0.4% copper, up to 6.0% manganese, up to 0.4% chromium, up to 0.3% zinc, up to 0.3% titanium, up to 0.15% zirconium, up to 0.3% nickel, and others up to 0.05% each, total up to 0.15%.
Claim 14
Dependent Claim
38 words
The article of claim 10 wherein said aluminum base alloy consists essentially of from about 2.0 to 5.0% magnesium, from about 0.05 to 0.40% iron, from about 0.05 to 0.40% silicon, and from about 0.03 to 0.20% vanadium.
Claim 15
Dependent Claim
65 words
The article of claim 12 wherein said aluminum base alloy in addition consists of from about 0.05 to 0.2% copper, from about 0.1 to 0.5% manganese, from about 0.1 to 0.4% chromium, up to about 0.3% nickel, from about 0.1 to 0.3% zinc, up to 0.15 % zirconium, from about 0.1 to 0.3% titanium, and others up to 0.05% each, total up to about 0.15%.
Claim 16
Dependent Claim
39 words
The article of claim 10 wherein said aluminum base alloy consists essentially of from 2.0 to 3.0% magnesium, up to about 0.45% of an element selected from the group consisting of iron, silicon, and mixtures thereof, balance essentially aluminum.
Claim 17
Dependent Claim
55 words
The article of claim 14 wherein said aluminum base alloy in addition consists of up to about 0.10% copper, up to about 0.6% manganese, up to about 0.35% chromium, up to about 0.25% zinc, up to about 0.15% zirconium, up to about 0.20% titanium, others up to about 0.05% each, total up to about 0.15%.
Claim 18
Dependent Claim
61 words
The article of claim 10 wherein said aluminum base alloy consists essentially of from 4.0 to 5.0% magnesium, up to about 0.35% iron, up to about 0.20% silicon, up to about 0.15% copper, from 0.20 to 0.50% manganese, up to about 0.10% chromium, up to about 0.25% zinc, up to about 0.15% zirconium, and up to about 0.10% titanium, balance aluminum.
Claim 19
Dependent Claim
15 words
The article of claim 10 wherein said aluminum base alloy is in the annealed condition.
Claim 20
Dependent Claim
18 words
The article of claim 10 wherein said aluminum base 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) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |