Aluminum Permanent Mold Casting
The specification of an aluminum alloy for a cast component is based upon the mechanical properties it can achieve. For the designer and purchaser, it is vital to understand that the properties obtained from one particular combination of casting alloy, foundry practice and thermal treatment may not be identical to those achieved with the same alloy in a different foundry or with a different thermal treating source. In all aluminum casting alloys, the percentages of alloying elements and impurities must be controlled carefully.
Custom Aluminum Castings
Batesville Products uses aluminum Alloy A356 because it has greater elongation, higher strength, and considerably higher ductility than 356. It has these improved mechanical properties because impurities are lower in A356 than in 356. A356 is also commonly used as an alternative for 6061 Aluminum Alloy when permanent mold casting.Best used in larger, low-volume molds, A356 is typically used in structural and aerospace applications.
Aluminum Casting Applications:
- Airframe castings
- Truck chassis parts
- Aircraft and missile components
- Structural parts requiring high strength
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Benefits of Aluminum Permanent Mold Casting
Castability—All casting characteristics are excellent for this alloy.
Machinability—Alloy A356.0 has good machinability. Abrasiveness can be overcome and high tool wear can be minimized by using sharp, carbide-tipped tools with high rakes and clearances. Moderate to fast speeds are recommended.
Finishing—Electroplated finishes are good. Chemical conversion coatings give good protection, but anodized appearance is only fair. Mechanical finishes on A356.0 are good.
Weldability—All common welding methods are excellent for joining this alloy. Brazing is not performed.
Corrosion Resistance—This alloy has good resistance to most forms of corrosion.