PEWTER is an alloy of tin, antimony and copper. It is used for various household, decorator and office items because of its pleasing appearance. One version of PEWTER is Brittania Metal which contains 90-92% tin. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as casting, forming, heat treating, machining, and joining. Filing Code: Sn-4. Producer or source: White metal alloy producers.