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Tin Plating


Tin plating is an electrolytic process. A dull (or stannate) tin finish is most often used by A Class. Tin plating is primarily for "functional" purposes such as providing a level of protection or corrosion resistance to a range of items. Tin is commonly applied over a preliminary coating of copper. A Class offers "Barrel" plating for cost effective treatment of very small connectors or components as well as bath plating for larger components.


Stannate Tin plating is a lower cost alternative than some protective coatings. Tin also has a good level of conductivity enhancement properties (as opposed to silver which has higher conductivity) which may be of benefit to manufacturers seeking to enhance this property somewhat without adding too much to the price. Tin has good solderability and is therefore a coating of choice where later soldering of components is required.

Colour & Aesthetics:

Tin plating has a 'whitish grey' hue and is usuallyapplied without the layer of bright nickel used in decorative coatings − as such tin has a dull, or matt appearance.


Examples include: Low-tech electrical or electronic components such as electronic connectors or bus bars; commercial cooking equipment; parts requiring soldering; other.

Substrates suited to this coating:

Tin can be plated over most metal substrates but commonly is used on lower value substrates such as mild steel or copper alloys.

Design Cautions:

As this is an electrolytic process it is necessary to use jigging, racking or wiring to provide for electrical current conductivity. Some shapes lend themselves more easily to this than others. In some cases the addition of a sprue or hole is necessary. Please consult your plating adviser prior to finalising design if you intend to use this finishing process.
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Copyright © 2009, A Class Metal Finishers Pty Ltd. 6 Waddikee Rd, Lonsdale, South Australia, 5160. Telephone (+ 61 8 8384 4331) Email:
Specialising in Copper, Nickel & Chrome Plating, Gold Plating, Silver Plating, Tin Plating, Electroless Nickel, Plating on Plastic (ABS) and Metal Polishing

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