Spherodon-M Amalgam Alloy type III Composition: Ag 45.5%, Sn 31.5%, Cu 23%, 50Pk por | Jul 19, 2026Spherodon M® is a spherical lathe cut blended amalgam alloy (type III) that provides excellent stability, enhanced corrosion resistance and reduced ditching. Category: Amalgam. Composition: Ag 45.5%, Sn 31.5%, Cu 23%.