Pewter's Composition
Tin (Sn): The primary element, making up the majority of the alloy, provides its luster, low melting point, and excellent formability.
Antimony (Sb): Adds strength and improves the metal's workability.
Copper (Cu): Increases the alloy's hardness and rigidity.
Bismuth (Bi): Added to improve the flow of the molten metal during casting.
Silver (Ag): Sometimes included for a cleaner surface finish, though it makes the metal softer.
Industrial Applications
Pewter is well-suited for a variety of industrial applications, particularly where detail and aesthetics are important:
Decorative & Collectible Items:
Due to its workability, pewter is used for statuettes, game figures, replica coins, and other collectible pieces.
Tableware & Barware:
Modern, lead-free pewter is used for high-quality items like tankards, flasks, and other beverage containers.
Jewelry:
Its non-toxic nature and ability to be cast into intricate designs make it a good choice for pendants and other jewelry.
Presentation & Incentive Goods:
Pewter allows for high-quality personalization through engraving, etching, and rolling, making it ideal for awards and promotional items.
Model Making:
Aircraft models and other detailed miniatures are often made from pewter.
Key Properties Relevant to Industry
Malleability & Ductility:
Allows for easy shaping and intricate designs without the brittleness of other metals.
Low Melting Point:
Simplifies casting and other production techniques like gravity or centrifugal casting.
Corrosion Resistance:
Pewter does not rust, though it can tarnish over time, a process that can be reversed with cleaning and polishing.
Non-Toxic (Modern Alloys):
Lead is no longer used in modern pewter intended for human contact, making it safe for tableware and jewelry.
