Abstract: The influences of the contents of Sb and As in the lead base alloys on the corrosion weight loss and mechanical properties were studied. The grid alloy containing 3.5% antimony and 0.15% As was scrcened for low maintenance lead acid batteries. The results indicated that the crystal structure and distribution of antimony in alloy were affected oviously by thbe addition of As. The influence of Sb and As on the corrosion weight loss and mechanical properties is discussed.