O'Fallon Casting's facility is located in O'Fallon, Missouri near St Louis.
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The first phase of O’Fallon Casting’s 25,000 sq. ft. expansion is currently in progress.  The expansion is on schedule to be fully completed by the summer of 2018.



O'Fallon Casting publishes it's final newsletter of 2016!

On October 7th, 2016 O'Fallon Casting participated in the St. Charles County Manufacturing Day, a program designed to expand knowledge about and improve general public perception of manufacturing careers and manufacturing’s value to the North American economy.

Technical Articles

For most foundry processes the commonly accepted standard for the nondestructive testing is SAE International specification AMS 2175.  Although better known for delineating the frequency and inspection criteria for Radiography, Magnetic Particle and Penetrant Inspection, AMS 2175 also devotes substantial sections to quantifying the standards for Visual inspection. 

Slots and fins are common features that appear often on Investment Cast parts and typical of configuration that can be incorporated into a design with minimal impact on the cost.  There are, however, some basic rules-of-thumb for the design of slots and grooves to help keep them from becoming cost drivers.

One of the special capabilities of the investment casting process is the production of castings with internalized features, passageways or undercuts.  O’Fallon Casting has four techniques available to produce internal detail:  mechanical tooling, soluble wax cores, pre-formed ceramic cores and imbedded pre-formed tubing.  We’ll expand here on each of these four techniques.


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...