AbstractStrength, dimensional change during setting, and corrosion resistance have been measured for amalgams prepared from splat‐cooled alloys of different compositions in the Ag‐Sn‐Cu system. The amalgam with optimum values of these properties was made from the alloy containing 60 at. % Ag, 25 at. % Sn, and 15 at. % Cu. Tensile strengths for amalgams from this alloy were about 8000 psi, dimensional change during setting near zero, and corrosion resistance was good.X‐Ray diffraction showed that the γ1and γ2phases formed during the early stages of setting but that the γ2phase had essentially disappeared after about 24 hr. At the latter time Cu6Sn5w