Effects of Ga Addition on the Mechanical Properties of 35 Ag-30 Pd-20 Au-15 Cu Alloy t t '

strength, O,2% off-set proof stress (proof stress) and Vickers hardness observed at Iow Ga contents (O.25-2.00%). On the other hand, the elongation significantly decreased with the additien of Ga at all contents used in this study. The tensile strength, proof stress and Vickers hardness of the 35Ag-30Pd-20Au-15Cu allQys containing O.25-2.00% Ga were in the range of 809-957 MPa, 669-857 .MPa and 260-301 MPa, respectively. These values are similar 'to those of Co-Cr alloys, suggesting that O.25J2.00% Ga alloys can be used for denture frameworks, clasps and connecL tors.