Alloy for cast components

In the production of a vehicular frame component wherein a cast component is produced by one or more operations into said frame component, the improvement wherein the production of said cast component includes:

• providing an alloy consisting of essentially of about 2 to 5 wt. % magnesium, up to approximately 0.3 wt. % silicon, approximately 0.2 to 1.6 wt. % manganese, up to approximately 0.60 wt. % iron, and between about 0.1 to 0.3 wt. %, zirconium, the balance substantially aluminum and incidental elements and impurities;
• and casting said frame component from said alloy.

A vehicle frame comprising cast components that are joined together or joined with wrought components to make a frame or subframe, at least one of said cast components is an aluminum alloy consisting essentially of about 2 to 5 wt. % magnesium, up to approximately 0.3 wt. % silicon, approximately 0.2 to 1.6 wt. % manganese, up to approximately 0.60 wt. % iron, and between about 0.1 to 0.3 wt. %, zirconium, the balance aluminum and incidental elements and impurities.

The method of producing an improved cast aluminum alloy product comprising:

• providing an alloy consisting of essentially of about 2 to 5 wt. % magnesium, up to approximately 0.3 wt. % silicon, approximately 0.2 to 1.6 wt. % manganese, up to approximately 1 wt. % iron, and between about 0.1 to 0.3 wt. %, zirconium, the balance substantially aluminum and incidental elements and impurities;
• casting a body of said alloy;
• and aging said cast body at a temperature of between about 150 to 250 degrees centigrade for between about 1 to 8 hours.

The method of producing an improved cast aluminum alloy product comprising:

• providing an alloy consisting of essentially of about 2.5 to 4 wt. % magnesium, up to approximately 0.3 wt. % silicon, approximately 0.4 to 0.8 wt. % manganese, up to approximately 0.60 wt. % iron, and between about 0.12 to 0.16 wt. %, zirconium, the balance substantially aluminum and incidental elements and impurities;
• and casting a component of said alloy.

An improved aluminum alloy for casting operations consisting essentially of about 2 to 5 wt. % magnesium, up to approximately 0.3 wt. % silicon, approximately 0.2 to 1.6 wt. % manganese, up to approximately 0.60 wt. % iron, and between about 0.1 to 0.3 wt. %, zirconium, the balance substantially aluminum and incidental elements and impurities.