EUROLAB, with its state-of-the-art accredited laboratories and expert team, offers precise and rapid testing services within the scope of EN 12373-1 test. This Part of this European Standard describes a method for determining decorative and protective anodic oxidation coatings on aluminium. It can be applied to the specification of coatings consisting mainly of aluminum oxide, formed on aluminum by an electrolytic oxidation process in which the aluminum acts as the anode.
Does not apply to the specification of:
The quality of the hydrothermal insulation is of great importance and sealing is always important, whether specified or not, except where an unsealed or cold-impregnated coating is expressly requested.
Anodized materials shall be free from visible defects on important surfaces when viewed from a distance of not less than 5 m in exterior architectural applications, 3 m in interior architectural applications, or 0,5 m in decorative applications. If requested by the buyer, the positions and maximum dimensions of the contact marks will be agreed upon between the anodiser and the buyer.
Color and surface texture and their tolerances will be determined by the buyer. If necessary for matching purposes, acceptable variation limits will be defined by at least two agreed samples.
Anodized aluminum has double reflection from the surfaces of the oxidation layer and the base metal. Therefore, when matching color samples, they should be kept in the same plane and viewed as close to normal as possible, with the working direction (e.g. rolling, extruding or machining direction) always the same. A diffuse lighting source will be placed above and behind the viewer.
Unless otherwise agreed, colors will be compared from a northern direction in diffuse daylight. If colored coatings will be used in artificial light, this illumination will be used for color comparison purposes.
To evaluate color fastness for outdoor applications, only outdoor exposure under conditions comparable to actual service use is satisfactory. Accelerated testing is only suitable for quality control testing of colored anodic oxidation coatings where the fastness of the particular coloring system has already been determined by outdoor exposure tests.
EUROLAB assists manufacturers with EN 12373-1 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.
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