Since 1969, O’Fallon Casting has manufactured nonferrous investment castings. As one of the world’s best producers of steel castings made from aluminum & copper, we offer competitive pricing on our castings along with old-fashioned customer service. Awarded manufacturers of the year. We are ISO 9001:2000 & EN/JISQ/AS9100:2004 certified & has been audited in accordance with requirements of AS9104A.