Patent DE961235C successfully refreshed from Google Patents.
Patent US3868250A successfully refreshed from Google Patents.
US3868250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat resistant alloys
Assignee: Honsel Werke AG
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Filing: 1972-06-07
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Granted: 1975-02-25
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Expires: 1992-06-07
Abstract
Abstract An aluminum-magnesium-silicon alloy with the customary additions for the production of parts such as cylinder heads, for resisting high alternating stressing and also high thermal stressing, wherein the improvement comprises the presence of grain-refined Mg2Si and a component for reducing the solubility of hydrogen.
Inventors
- 👤 Paul Zimmermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:50
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/06; C22C21/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
71 words
A HIGH-STRENGTH MANGANESE-CONTAINING AL-MG-SI ALLOY HAVING A FREE MAGNESIUM CONTENT OF 1.5 TO 4%, SAID ALLOY CONSISTING ESSENTIALLY OF 0.6 TO 1.8% MANGANESE, 2 TO 7% MAGNESIUM, 0.6 TO 2.5% SILICON, 0.1 TO 0.3% TITANIUM, AND HAVING BEEN SUBJECTED TO ONE OF THE FOLLOWING STEPS (A) AND (B): A. A SOLUTION TREATMENT UP TO 565*C MAXIMUM, B. A CORRESPONDING SOLUTION TREATMENT WITH SUBSEQUENT AGE-HARDENING AT TEMPERATURES NOT EXCEEDING THE HARDNESS MAXIMUM.
Claim 2
Dependent Claim
71 words
A HIGH-STRENGTH MANGANESE-CONTAINING AL-MG-SI ALLOY HAVING A FREE MAGNESIUM CONTENT OF 1.5 TO 4%, SAID ALLOY CONSISTING ESSENTIALLY OF 0.6 TO 1.8% MANGANESE, 2 TO 7% MAGNESIUM, 0.6 TO 2.5% SILICON, 0.1 TO 0.3% TITANIUM, AND HAVING BEEN SUBJECTED TO ONE OF THE FOLLOWING STEPS (A) AND (B): A. A SOLUTION TREATMENT UP TO 565*C MAXIMUM, B. A CORRESPONDING SOLUTION TREATMENT WITH SUBSEQUENT AGE-HARDENING AT TEMPERATURES NOT EXCEEDING THE HARDNESS MAXIMUM.
Claim 3
Dependent Claim
27 words
An alloy as claimed in claim 1, said alloy containing up to 1.5% Ni, up to 3% Cu, up to 0.1% beryllium, and at most 0.6% Fe.
Claim 4
Dependent Claim
34 words
An alloy as claimed in claim 1, said alloy containing manganese only in the quantities up to 1.2%, magnesium from 3.0 to 4.5%, silicon from 0.8 to 1.2%, and copper from 0.2 to 1.0%.
Claim 5
Dependent Claim
29 words
An alloy as claimed in claim 1, the magnesium content of said alloy being from 4.5 to 7.5% and the silicon content of said alloy being 0.8 to 2.5%.
Claim 6
Dependent Claim
69 words
An aluminum-magnesium-silicon alloy consisting essentially of 0.6 to 4.5% silicon, 2.5 to 11% magnesium, and aluminum, wherein the improvement comprises 1 to 4.5% free magnesium and at least one material selected from the group consisting of manganese at 0.6 to 1.8%, cobalt, chromium, vanadium, and molybdenum, where the sum of the gram-atoms of manganese, cobalt, vanadium, and molybdenum lies in the gram-atom range equivalent to 0.6 to 1.8% manganese.
Claim 7
Dependent Claim
69 words
An aluminum-magnesium-silicon alloy consisting essentially of 0.6 to 4.5% silicon, 2.5 to 11% magnesium, and aluminum, wherein the improvement comprises 1 to 4.5% free magnesium and at least one material selected from the group consisting of manganese at 0.6 to 1.8%, cobalt, chromium, vanadium, and molybdenum, where the sum of the gram-atoms of manganese, cobalt, vanadium, and molybdenum lies in the gram-atom range equivalent to 0.6 to 1.8% manganese.
Claim 8
Dependent Claim
31 words
An alloy as claimed in claim 5, said alloy containing at least one element selected from the group consisting of cobalt at at least 0.1% and chromium at at least 0.6%.
Claim 9
Dependent Claim
23 words
An alloy as claimed in claim 5, said alloy containing up to 1.5% Ni, up to 0.5% Cu, and at most 0.6% Fe.
Claim 10
Dependent Claim
13 words
An alloy as claimed in claim 5, said alloy containing 3% free magnesium.
Claim 11
Dependent Claim
31 words
An alloy as claimed in claim 5, said alloy containing at least one element selected from the group consisting of vanadium at at least 0.1% and molybdenum at at least 0.1%.
References Cited (Backward Citations)
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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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |