Abstract: A cold-hardening aluminum casting alloy with good thermal stability for the production of thermally and mechanically stressed cast components, wherein the alloy includes from 11.0 to 12.0 wt % silicon from 0.7 to 2.0 wt % magnesium from 0.1 to 1 wt % manganese less than or equal to 1 wt % iron less than or equal to 2 wt % copper less than or equal to 2 wt % nickel less than or equal to 1 wt % chromium less than or equal to 1 wt % cobalt less than or equal to 2 wt % zinc less than or equal to 0.25 wt % titanium 40 ppm boron optionally from 80 to 300 ppm strontium and aluminium as the remainder with further elements and impurities due to production individually at most 0.05 wt %, in total at most 0.2 wt %. The alloy is suitable in particular for the production of cylinder crank cases by the die-casting method.

Abstract: A cold-hardening aluminium casting alloy with good thermal stability for the production of thermally and mechanically stressed cast components, wherein the alloy includes from 11.0 to 12.0 wt % silicon from 0.7 to 2.0 wt % magnesium from 0.1 to 1 wt % manganese less than or equal to 1 wt % iron less than or equal to 2 wt % copper less than or equal to 2 wt % nickel less than or equal to 1 wt % chromium less than or equal to 1 wt % cobalt less than or equal to 2 wt % zinc less than or equal to 0.25 wt % titanium 40 ppm boron optionally from 80 to 300 ppm strontium and aluminium as the remainder with further elements and impurities due to production individually at most 0.05 wt %, in total at most 0.2 wt %. The alloy is suitable in particular for the production of cylinder crank cases by the die-casting method.