BS EN 13523‑3 is one of the parts of a multi-series procedures for determining the instrumental colour difference (CIELAB) of an organic coating on a metallic substrate compared to another one used as a reference and the metamerism depending on the illuminant.
BS EN 13523‑3 provides two methods to determine instrumental colour difference:
Note: Establishing a reference as well as the magnitude of an acceptable colour difference are not covered by this method.
BS EN 135233 on coil coated metals is applicable to:
BS EN 13523-3 provides test guidelines for organic coating on coil coated metals, which are used for design flexibility, corrosion resistance, and weathering resistance. Adherence to these guidelines ensures increased durability of metals.
By offering test procedure guidelines, BS EN 13523-3 aids in the improvement of the quality of organic coating on coil coated metals.
BS EN 13523‑3:2021 supersedes EN 13523-3:2014 and EN 13523-15:2015.
In comparison to the previous editions, the following technical modifications have been made:
EN 13523-3:2021