LEAD is the heaviest, the most corrosion resistant and among the most malleable of the common metals. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, forming, and joining. Filing Code: Pb-7. Producer or source: Primary lead producers.