Several binary silver alloys, including AgSb, AgTb, AgDy, AgGa, AgTi and AgAl, have been investigated in order to develop new sheath alloys used for the BSCCO tapes. The mechanical properties of these alloys have been measured, including the tensile strength and strain. The results show that the Ag-Sb and Ag-Ti samples are the best candidate materials among the six alloys and have the highest strain and the highest tensile strength, respectively. The AgTb and AgDy alloys also have good properties while AgGa and AgAl alloys can not be used as sheathed materials due to their lower strains.