O'Fallon Casting's facility is located in O'Fallon, Missouri near St Louis.
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The second phase of O'Fallon Casting's plant expansion is currently in process.  The construction phase of the project should be complete by the end of May 2018.

The 64th Annual Technical Conference & Equipment Exposition includes OFC's Casting of the Year win, Frank Valenta's induction into the Hall of Honor and presentations given by Taylor Thornhill and Vince Gimeno.

For the second year in a row, O'Fallon Casting participated in the St. Charles County Manufacturing Day at St. Charles Community College, held on October 2nd, 2017.

Technical Articles

Minor oversights during the design phase of a casting can lead to unintended downstream costs.  Let us consider two case studies we have encountered recently as examples of how overlooking the requirements of specifications on your drawing can lead to extraneous manufacturing steps. 

As it is with other hard alloys such as inconel or even stainless steel, the secondary machining of MMC castings is a significant cost component of their manufacture.   The near-net-shape advantage and the greater freedom of design that is inherent with the Investment Casting process provides opportunities to greatly reduce or eliminate machining content of MMC castings. 

Aluminum alloy / Silicon Carbide MMC castings can be produced in 20%, 30% & 40% concentrations of Silicon Carbide by volume and heat treatable, commonly being furnished to a T77P heat treatment.


As a premier manufacturer of investment castings, O’Fallon Casting holds itself to the very highest of standards.

Our Services:

O'Fallon Casting's Laser Marking provides its customers with a new option for a consistently legible,...

Digital Radiography captures an X-ray image digitally, removing film from the equation and simplifying the...

To reduce the time and cost of bringing new parts to market, customers increasingly are...