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Aluminum Investment Castings

A reliable source for Investment Castings information and leading Investment Castings Companies & Manufacturers.

Aluminum and aluminum alloys are among the most commonly used metals for investment casting; almost any castable metal may be used such as copper, brass or steel. The main disadvantage is that investment castings tend to be more expensive per unit. However, the equipment cost is generally lower and the parts require little machining or finishing after they are cast. Read More…

Aluminum Investment Castings Aluminum investment casting is the process that produces industrial parts through the metallic replication of wax models. Molten aluminum is used to create parts that have a very smooth surface finish, high dimensional accuracy and acute detail without flash or parting lines.
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Leading Manufacturers

Cleveland, OH  |  440-250-1900

For over 30 years, we have provided metal forged products for a wide variety of industries, including the aerospace, military, food service, medical, and automotive industries. Our customers know they can trust our forgings for quality and affordability. We will never try to make you pay more than you should for our products. Contact us by phone or email to find out more!

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Ferralloy Inc. $$$

Waterville, OH  |  419-878-8156

Since 1944 we have been driven to remain a cut above the competition in investment castings and everything we do. We have our own tooling shop filled with state-of-the-art testing machines. We ensure perfect results every time. It is our goal to establish lifelong relationships with our customers that benefit us both. Contact us for more info today!

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Rimer Enterprises, Inc. $$$

Diamond Bar, CA  |  877-484-6776

At Impro, we have top-of-the-line equipment for the most demanding investment casting requirements. Our equipment and automation process controls allow us to work with different ferrous and non-ferrous alloys, and maintain consistent and repeatable tolerances as close as ± 0.1 mm. Our investment castings are dimensionally and geometrically complex and produced to net shape, minimizing the need for secondary machining. Contact us today to learn more!

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Impro Industries USA, Inc. $$$

Oxford, MI  |  248-975-7612

Our top of the line wax casting products are ideal for a number of different industries. Here at Barron Industries, we are a very experienced manufacturer and we extensively test our products to ensure maximum performance. We serve a myriad of industries including medical, sporting, industrial, commercial, and technology. Our capabilities allow us to fabricate complex shapes with fine detail. We can produce castings up to 18 inches in length or width and as thin and .020 of an inch.

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Barron Industries $$$

Muskegon, MI  |  231-788-3318

Eagle Precision is an investment casting foundry pouring both ferrous and non-ferrous castings. Our investment castings are produced to precision tolerances of +/-.005 inch per inch with surface finishes of 125 RMS thus enhancing the design of your components. We can produce extremely thin sections, knife edges, and sharp detail. We take great pride in our reputation for producing top-quality parts that regularly exceed customer expectations.

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Eagle Precision Cast Parts, Inc. $$$

Dayton, OH  |  937-299-7333

Bimac Precision Castings produces world class investment castings to a diverse global market. We offer design review, prototyping, assembly, testing and innovation combined with prompt customer service and on time delivery in addition to the cost savings afforded by investment casting. A leader in the production of precision products through wax casting, Bimac Precision Castings your source for top quality investment cast products.

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Bimac Precision Castings $$$
placeholder image Ferralloy Inc. Rimer Enterprises, Inc. Impro Industries USA, Inc. Barron Industries Eagle Precision Cast Parts, Inc. Bimac Precision Castings

Investment casting is generally used for small precision parts that would be very difficult to produce through any other method. Aluminum castings can have walls as thin as half a millimeter. They range from a fraction of an ounce to over 1,000 pounds though most castings are 15 pounds or less.

Investment castings have been used in jewelry making for centuries but are now finding many more uses including precision instruments, engine parts, and medical equipment. Because of the wide application of manufactured metal parts, aluminum investment castings are found in the aerospace, automotive, military, dental, mining, food processing, sports, and telecommunication industries.

Aluminum Investment Castings Aluminum Investment Castings - Ferralloy Inc.

The process begins by creating a wax pattern called the master die by carving or by injection molding. The wax pattern may be assembled with other wax patterns and is then attached to a wax sprue, or rod, so they can all be cast at once. As many as several hundred patterns may be assembled around the sprue.

Once firmly attached, a ceramic slurry called the investment is applied through two main methods. In the first, the cluster of patterns is dipped into the investment multiple times and removed to achieve a uniform surface and thickness. The other method is to place the cluster in a flask and fill it with the investment, vibrating it to allow pockets of air to escape and to ensure that all the spaces inside are filled with the investment.

Drying is the next step and can be accelerated by placing the assembly in a vacuum or by a fan. Once dry, the assembly is turned upside down and placed in a furnace or oven. The wax melts and drips out or is vaporized. The mold is heated further to remove any moisture or wax residue; this step in the process is called the burnout. Liquid aluminum is poured into the space where the wax used to be, drawn in by gravity, vacuum, positive air pressure, or centrifugal casting methods. Once cooled, the hardened investment shell is hammered, vibrated, dissolved or sand- or water-blasted off, releasing the aluminum part inside.

Aluminum Investment Casting Informational Video