Aluminum Casting Alloys

Abstract

The invention relates to a light metal alloy.

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.