LEAD-BASE SOLDER comprises a family of alloys, usually lead-tin alloys, with or without the addition of antimony, although there are other types including those containing silver. They are widely used in industrial applications. This datasheet provides information on composition, physical properties, hardness, tensile properties, and shear strength as well as fracture toughness. It also includes information on corrosion resistance. Filing Code: Pb-8. Producer or source: Most lead producers.