Die Casting Alloy

Abstract

A die casting alloy on an aluminum-silicon base with a composition having 8.5 to 11.5 wt. % of silicon, 0.1 to 0.5 wt. % of magnesium, 0.3 to 0.8 wt. % of manganese, 0.02 to 0.5 wt. % of iron, 0.005 to 0.5 wt. % of zinc, 0.1 to 0.5 wt. % of copper, 0.02 to 0.3 wt. % of molybdenum, 0.02 to 0.3 wt. % of zirconium, 10 to 200 ppm of gallium and optionally at least one of 30 to 300 ppm of strontium, 5 to 30 ppm of sodium, 1 to 30 ppm of calcium, 5 to 250 ppm of phosphorus, 0.02 to 0.25 wt. % of titanium, and 3 to 50 ppm of boron with the remainder being aluminium and unavoidable impurities. The alloy can be produced with a recycling rate of 50%.

1 . A die-cast alloy, based on aluminum-silicon, comprising:
 8.5 to 11.5% by weight silicon   0.1 to 0.5% by weight magnesium   0.3 to 0.8% by weight manganese   0.02-0.5% by weight iron   0.005-0.5% by weight zinc   0.1 to 0.5% by weight copper   0.02 to 0.3% by weight molybdenum   0.02 to 0.3% by weight zirconium   10 to 200 ppm gallium and   optionally at least one element selected from the group consisting of   30 to 300 ppm strontium, 5 to 30 ppm sodium, 1 to 30 ppm calcium, 5 to 250 ppm phosphorus, 0.02 to 0.25% by weight titanium, and 3 to 50 ppm boron,   with the remainder being aluminium and unavoidable impurities.   
     
     
         2 . The die-cast alloy according to  claim 1 , wherein iron is 0.15-0.5% by weight. 
     
     
         3 . The die-cast alloy according to  claim 1 , wherein molybdenum is 0.05 to 0.20% by weight. 
     
     
         4 . The die-cast alloy according to  claim 1 , wherein zirconium is 0.05 to 0.20% by weight. 
     
     
         5 . The die-cast alloy according to  claim 1 , wherein gallium is 60 to 120 ppm. 
     
     
         6 . The die-cast alloy according to  claim 1 , wherein manganese is 0.3 to 0.5% by weight. 
     
     
         7 . The die-cast alloy according to  claim 1 , wherein zinc is 0.2 to 0.4% by weight. 
     
     
         8 . The die-cast alloy according to  claim 1 , wherein copper is 0.15 to 0.25% by weight. 
     
     
         9 . The die-cast alloy according to  claim 1 , wherein silicon is 8.5 to 10.0% by weight. 
     
     
         10 . The die-cast alloy according to  claim 1 , wherein magnesium is 0.3 to 0.4% by weight. 
     
     
         11 . (canceled) 
     
     
         12 . A method of making a structural component comprising die-casting the alloy of  claim 1  to form the structural component. 
     
     
         13 . The die-cast alloy according to  claim 1 , consisting of:
 8.5 to 11.5% by weight silicon   0.1 to 0.5% by weight magnesium   0.3 to 0.8% by weight manganese   0.02-0.5% by weight iron   0.005-0.5% by weight zinc   0.1 to 0.5% by weight copper   0.02 to 0.3% by weight molybdenum   0.02 to 0.3% by weight zirconium   10 to 200 ppm gallium and   optionally at least one element selected from the group consisting of   30 to 300 ppm strontium, 5 to 30 ppm sodium, 1 to 30 ppm calcium, 5 to 250 ppm phosphorus, 0.02 to 0.25% by weight titanium, and 3 to 50 ppm boron,   with the remainder being aluminium and unavoidable impurities.