EMI/RFI Shielding: Conductive Paints

The most commonly used conductive paints are loaded with either nickel, copper or silver particles.

Nickel was one of the first conductive paints to be engineered and used in mass production and is typically applied at 50 microns. Although still in demand, nickel conductive paint has largely been superseded by copper conductive paint.

Copper-based paints, applied at 25 microns, are today the most popular coatings as the paint provides a better finish and performance at no price premium over nickel.

Silver-based paint, although slightly more expensive, is highly conductive and is applied at 10 microns. Silver conductive paint is ideal where that extra level of performance is required, such as in the defence sector.

The table below summarises the main properties:

Coating Name Applicoat EN150 Applicoat EC225 Applicoat ES210
Conductive Filler Nickel Silver-Plated Copper Silver
Nominal thickness 40-50 microns 25 microns 10 microns
Typical sheet resistance 1.0 to 0.5 ohms / square 0.20 to 0.08 ohms / square 0.05 to 0.
02 ohms / square

Additionally, ACT can apply further functional coatings, depending upon requirements. These include, for example, NATO green, or a sealing lacquer on top of the conductive paints for insulation.

Full details of each of the paints' performance are available in our individual data sheets.

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Applied Coating Technologies Ltd Tipton Road, Tividale, Oldbury B69 3HY. United Kingdom
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