Microstructure and properties of die casting Ag-Mg-Ni alloy ring were investigated.It is found that although die casting Ag-Mg-Ni alloy ring exhibits near-net forming

there exist amounts of holes in the ring.Thickness of fine grain region in the alloy reaches up to 300～400μm

and Mg and Ni elements are uniformly distributed into the alloy in the absence of segregation.The density

hardness and electric conductivity of die casting Ag-Mg-Ni ring are 10.078 g/cm 3

44.6（HV0.2） and 43 MS/m

respectively

which are lower than those of casting-hot extrusion ones.