ANTIMONIAL LEAD ALLOYS are binary alloys containing from 1 to 12% antimony, balance lead. They are also called HARD LEAD, the antimony being used to increase the hardness and strength of lead. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep and fatigue. It also includes information on corrosion resistance as well as casting, forming, heat treating, and joining. Filing Code: Pb-9. Producer or source: Lead producers.