| (19) |
 |
|
(11) |
EP 4 234 123 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
27.09.2023 Bulletin 2023/39 |
| (43) |
Date of publication A2: |
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30.08.2023 Bulletin 2023/35 |
| (22) |
Date of filing: 06.05.2019 |
|
| (51) |
International Patent Classification (IPC):
|
|
| (84) |
Designated Contracting States: |
|
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL
NO PL PT RO RS SE SI SK SM TR |
| (30) |
Priority: |
07.05.2018 US 201862667930 P
|
| (62) |
Application number of the earlier application in accordance with Art. 76 EPC: |
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19773328.0 / 3589766 |
| (71) |
Applicant: Alcoa USA Corp. |
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Pittsburgh, PA 15212-5858 (US) |
|
| (72) |
Inventor: |
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- YAN, Xinyan
Murrysville, PA 15668 (US)
|
| (74) |
Representative: Forresters IP LLP |
|
Skygarden
Erika-Mann-Straße 11
80636 München
80636 München (DE) |
|
| |
|
| (54) |
AL-MG-SI-MN-FE CASTING ALLOYS |
(57) New aluminum casting (foundry) alloys are disclosed. The new aluminum casting alloys
generally include from 2.5 to 5.0 wt. % Mg, from 0.70 to 2.5 wt. % Si, wherein the
ratio of Mg/Si (in weight percent) is from 1.7 to 3.6, from 0.40 to 1.50 wt. % Mn,
from 0.15 to 0.60 wt. % Fe, optionally up to 0.15 wt. % Ti, optionally up to 0.10
wt. % Sr, optionally up to 0.15 wt. % of any of Zr, Sc, Hf, V, and Cr, the balance
being aluminum and unavoidable impurities. The new aluminum casting alloys may be
high pressure die cast, such as into automotive components. The new aluminum alloys
may be supplied in an F or a T5 temper, for instance.