(a) General. Tin is a very soft, malleable, somewhat ductile, corrosion resistant metal having low tensile strength and high crystalline structure. It is used in coating metals to prevent corrosion.

(b) Uses. The major application of tin is in coating steel. It serves as the best container for preserving perishable focal. Tin, in the form of foil, is often used in wrapping food products. A second major use of tin is as an alloying element. Tin is alloyed with copper to produce tin brass and bronze, with lead to produce solder, and with antimony and lead to form babbitt. (c) Capabilities. Tin can be die cast, cold worked (extruded), machined, and soldered. (d) Limitations. Tin is not weldable. (e) Properties. Pure tin has tensile strength of 2800 psi (19,306 kPa); specific gravity of 7.29; melting point of 450°F (232°C); and is corrosion resistant. Babbitt alloy tin has tensile strength of 10,000 psi (68,950 kPa) and Brinell hardness number of 30. (f) Appearance. Tin is silvery white in color. (g) Fracture test. The fracture surface of tin is silvery white and fairly smooth. (h) Spark test. Tin gives off no sparks in a spark test.

(i) Torch test. Tin melts at 450°F (232°C), and will boil under the torch.