Features and applications
The products are required to have first-class electrical conductivity and good corrosion resistance. In order to satisfy these increasing demands of our customers for end products such as connectors, which are used in very complex electrical and electronic systems, our material is repeatedly surface treated. This gives it excellent resistance to oxidation and external influences and reduces the so-called insertion force.

These two processes are used for surface treatment: electrolytic tinning and electrolytic tinning with a subsequent reflow treatment. 

Copper and copper alloys can be surface treated with several metals. However, pure tin is very important due to its economic efficiency.

Electrolytic tinned strips

In contrast to Europe where hot dip tinning is most frequently practiced most of the strips coated with tin for the North American and Asian markets are produced electrochemically. Conventional electroplating is therefore used.

During electrolytic tinning, the base material is not exposed to extreme temperatures which can be an advantage for heat-sensitive materials that are inclined to become soft during hot dip tinning.

The layer thicknesses mentioned in the table above are the minimum required values.

* Thickness of 0.2 - 0.3 mm avaible depending on the hardness of the strip.
** Width of 10 - 180 mm, slit to width (bare edges) 180 - 310 mm: full width tinned.