What is Aluminum Casting

    Aluminum casting is the process of forming molten aluminum into various shapes using molds. There are several ways to cast aluminum with each method having its own benefits. Aluminum casting is most widely used to make parts for the automotive industry as well as the building and for building materials in the construction industry. Casting Aluminum is inexpensive and versatile, allowing for many uses and quick production.

    Aluminum Properties:

    Hardness (Vickers): 107

    Tensile Strength, Ultimate: 45000 psi    (310 MPa)

    Tensile Strength, Yield: 40000 psi (276 MPa)

    Melting Point: 660.37 degrees Celsius 

    Casting Methods

    Die Casting-

    In the aluminum die casting process, molten aluminum is forced by pressure into a mold or die. This method is recommended for high-volume production with minimal machining and finishing needed.

    Permanent Mold Casting-

    In the aluminum permanent mold casting process, molten aluminum is either poured into a mold using vacuum or poured into a mold using gravity to fill the cavity. Molds and cores of steel or other metal are used to create the shape. Permanent mold casting is considered the strongest of the casting processes. Semi-permanent mold casting is also used when removing permanent cores from the finished product would be impossible. 

    Sand Casting-

    Aluminum sand casting is the most versatile and widely used casting process. To cast aluminum using sand, a mold is created by pressing the pattern into sand. This pattern is slightly larger to allow for aluminum to shrink while cooling. Molten aluminum is then poured into the mold and allowed to cool. Sand casting is a slow process but usually more economical for small quantities, intricate designs or when a very large casting is required.


    Aluminum Castings applications are used across many industries. Some of the most popular applications are listed below. 

    • Automotive parts
    • Small appliances
    • Hand tools
    • Lawnmowers
    • Machinery
    • Cookware

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