Tin Plating Glossary
Tin is a soft, white, non-toxic metal which is mainly applied to electronic components and items which come into contact with foodstuffs. The metal is not readily tarnished by sulphur compounds neither is it affected by any organic acids present in most foodstuffs. However, the coating can be attacked by strong mineral acids. Both bright and dull tin plating is extensively used for corrosion protection of ferrous and non-ferrous metals. Another useful property of tin is that it is relatively easy to solder, and is a good conductor.
South West Metal Finishing can offer either a bright or dull tin finish:
Bright tin
The acid tin plating process is ideal for components in the electronics industry which require a bright and corrosion resistant finish. The coating provides a bright, smooth finish, even on components with deep recesses.
Dull tin
Dull tin gives a matt light grey finish and is most commonly used for food processing equipment. Dull tin is also appropriate for general purpose plating, and for components which do not require a decorative finish.
Generally a deposit between 5-30 microns (0.0002-0.0012”) is applied to both types of tin plating on a commercial basis or to the relevant BS or aerospace spec.
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