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Brass Investment Casting

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

Investment casting using molten brass results in a final product that is very smooth and detailed without flash or parting lines. This technique creates parts that are precise and lightweight. A variety of metal alloys may be used, including aluminum, steel, and gold. Read More…

Brass Investment Casting Brass investment casting is the manufacturing process that creates parts through the metallic replication of wax models.
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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

Almost any castable metal may be investment cast. The investment casting process lends itself well to parts from a few grams to a few hundred pounds; most parts, however, are 15 pounds or less.

The main drawback to investment casting is that it is more expensive than other manufacturing methods. However, the equipment cost is typically lower than other methods and after the parts are produced they require little finishing or machining.

Brass castings are used in many applications; metal parts are used industrially, commercially, and domestically every day. Investment casting has been used for jewelry making for hundreds of years but is finding modern use in a wide variety of applications including dental and medical tools, engines, couplings, fittings, pipes, propellers, and thousands of other examples in the plumbing, aerospace, automotive, dental, medical, chemical, electrical, construction, mining, food processing, telecommunication, military, sports, and other industries.

Brass Investment Casting Brass Investment Casting - Rimer Enterprises, Inc.

The first step in investment casting is creating a master die out of wax. This wax pattern can be carved by hand or machine or may be produced through injection molding. The die is an exact replica of the part that is to be produced. It is attached to a wax rod called a sprue. Several hundred wax patterns may be attached to the same sprue or it may be a single pattern.

When the master dies are firmly attached, the assembly is inverted and dipped into a ceramic slurry called the investment. It may be dipped multiple times to achieve an even coating and the desired thickness. An alternative method is to mount the assembly in a flask and to pour in the investment.

The investment is then left to dry, which requires a number of hours unless the process is aided by a fan or vacuum. After it has dried completely, the assembly is inverted and baked in an oven or furnace in order to melt or vaporize the wax. The mold is heated more than necessary to guarantee that there is no moisture or residual wax inside that would interfere with the liquid brass that is then poured into the space left by the wax. In order to thoroughly fill the mold, the molten metal can be drawn in using a vacuum, positive air pressure, or centrifugal casting methods. Sometimes the force of gravity is enough. The brass cools and once it has hardened into a solid, the investment mold is removed to release the brass casting inside.

Brass Investment Casting Informational Video