Coating Terms

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Description
Type of accelerated test to determine the performance of organic coatings in preventing the corrosion of the metal surface they are applied to. Different from the standard Salt Spray Test, the aqueous solution sprayed on the coated panel includes 0,025% copper chloride dihydrate, in addition to the 5% sodium chloride.
It is an accelerated test to assess how efficiently the paint film protects the substrate against corrosion. Coated steel panels scribed through the coating, exposing the bare steel, are hung on in a 35ºC chamber by non-metal grids, where they are exposed to a continuous mist of 5% NaCl salt solution. For industrial coatings, after a test period of a few hundred hours to a few thousand hours, the panels are examined for degradation of the paint film and corrosion of the substrate.