Aluminum Casting Alloys

1 . An Al casting alloy containing at least five of the following alloying components:

Si: 2.5 to 3.3, preferably 2.7 to 3.1 wt. %

Mg: 0.2 to 0.7, preferably 0.3 to 0.6 wt. %

Fe: <0.18, preferably 0.05 to 0.16 wt. %

Mn: <0.5, preferably 0.05 to 0.4 wt. %

Ti: <0.1, preferably 0.01 to 0.08 wt. %

Sr: <0.03, preferably 0.01 to 0.03 wt. % <0.03 wt. %

Other: <0.1 wt. %

and in each case made up to 100 wt. % with Al.

2 . The Al casting alloys according to claim 1 , wherein the parts cast therefrom are solution-annealed between 490 and 540° C. for 1 to 10 h.

3 . The Al casting alloys according to claim 1 , wherein the parts cast therefrom are tempered between 150 and 200° C. for 1 to 10 h.

4 . The Al casting alloys according to claim 1 , wherein the alloys are grain-refined.

5 . Use of Al casting alloys according to claim 1 , wherein component or parts for respectively chassis part of motor vehicles.