Tin is a silvery white metal with a specific gravity of 7.29 and a melting point of 232属 C. It has a brilliant lustre and when polished, it has a high light reflectivity. The metal is highly resistant to corrosion and fatigue, and alloys well with many other metals particularly with copper (bronze) and lead (solder). Chemically, the most outstanding property of tin is its ability to resist attack by air and by many of the organic acids, including those found in food of various kinds.


In brief, tin's outstanding physical and chemical properties include corrosion resistance, non-toxicity, lubricity, malleability, alloyability with many metals, a low melting point, ductility, low coefficient of friction, solderbility, low vapour pressure, adaptability to compounding and processing, wetting and adhering potential and electrodeposition compatibility.





Traditional industrial uses of tin include tinplate, tin alloy coatings, tin alloys, solder, pewter and chemical compounds. While tinplate has remained as the ideal packaging material for food, the advent of the electronic age has spurred increase tin usage in solder products. With the change to lead free solder, this industrial use will become the single largest sector of tin consumption.


In recent times, R&D has also created myriad uses of tin with focus on its environmentally friendly and non-toxic properties. In materials technology, tin is in various stages of replacing lead in tin shots, fishing and curtain weights, wine capsules, wheel weights and bullets. In coatings technology, environmentally friendly electroplating systems for tin and its alloys to provide superior corrosion protection and decorative finishes have been developed. In chemicals technology, tin based flame retardant synergists to replace antimony and bromine compounds are gaining worldwide acceptance.