Pressure-cast component made of highly ductile and resilient aluminium alloy

Abstract

A component, in particular a safety, structural or ground connection component for a motor vehicle, cast under pressure, and made of an aluminum alloy with the following composition (in wt. %): Mg: 1.0-4.5; Si: 0.2-1.3; Cu<0.3; Zn<0.1; Fe<0.3, Ti<0.3 and at least one element for reducing adherence to the mold which is Mn (0.3-1), Cr (0.1-0.4), Co (0.1-0.4), V (0.1-0.4) and Mo (0.1-0.4), other elements<0.05 each and 0.15 in total, the remainder being aluminum.

1 . Die-cast component, particularly a safety, structural or suspension component of a motor vehicle, made of an aluminum alloy having a composition (% by weight): 
 Mg 1.0-4.5; Si 0.2-1.3; Cu<0.3; Zn<0.1; Fe<0.3; Ti<0.3, and at least one element for reducing adherence to the selected from the group consisting of Mn (0.3-1), Cr (0.1-0.4); Co (0.1-0.4); V (0.1-0.4) and Mo (0.1-0.4), other elements<0.05 each and 0.15 in total, the remainder being aluminum.    
   
   
       2 . Component according to  claim 1 , characterised in that the Mg content is between 2.0 and 4.0%.  
   
   
       3 . Component according to  claim 1 , characterised in that the Si content is between 0.4 and 1.0%.  
   
   
       4 . Component according to  claim 1 , characterised in that the Cu content is less than 0.10%.  
   
   
       5 . Component according to  claim 1 , characterised in that the Fe content is less than 0.2%.  
   
   
       6 . Component according to  claim 1 , characterised in that the Ti content is between 0.05 and 0.25%.  
   
   
       7 . Component according to  claim 1 , characterised in that the alloy contains Be with a content of not more than 50 ppm.  
   
   
       8 . Die-cast component according to  claim 1 , having a yield strength in the T5 temper (aged at a temperature of between 150 and 200° C.), equal to more than 100 MPa and elongation at rupture equal to more than 15%.