Abstract
Casting properties of a 18-8 stainless steel as a cast denture alloy were studied.The steel and a Co-Cr alloy were cast into phosphate-bonded investment molds by use of an argon high-frequency pressure casting machine.Proof stress of the steel was fairly lower than that of the Co-Cr alloy, indicating that the application of the steel was limited to full denture.Ultimate tensile strength of the steel was nearly equal to that of the Co-Cr alloy.Elongation of the steel was larger than that ot the Co-Cr alloy.Corrosion-resistance and castability of the steel were sufficient for cast denture.The surface of the steel castings was rough for reaction with molds.Casting accuracy of the steel was nearly equal to that of the Co-Cr alloy.
