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Normas DIN – AENOR
DIN EN 13523-15:2015-09

DIN EN 13523-15:2015-09

Coil coated metals - Test methods - Part 15: Metamerism; German version EN 13523-15:2015 / Note: To be replaced by DIN EN 13523-3 (2020-11).

Tôles prélaquées - Méthodes d'essai - Partie 15: Métamérisme; Version allemande EN 13523-15:2015 / Attention: À remplacer par DIN EN 13523-3 (2020-11).

Bandbeschichtete Metalle - Prüfverfahren - Teil 15: Metamerie; Deutsche Fassung EN 13523-15:2015 / Achtung: Vorgesehener Ersatz durch DIN EN 13523-3 (2020-11).

Fecha:
2015-09 /Active
Equivalencias internacionales:

EN 13523-15 (2015-07)

Relación con otras normas DIN:
Resumen:
This Part of EN 13523 defines terms of the procedure for determining the metamerism of a colour match of an organic coating on a metallic substrate. When two colour specimens have identical spectral reflection curves, they are matching under any illuminant irrespective of its spectral characteristics. This is termed a "spectral match". It is also possible for two colour specimens having different spectral reflection curves to match visually under a given light source but not to match under another light source with different spectral characteristics; such matches are termed "metameric". One quantitative description of metamerism is the so-called "metamerism index". The information of the metamerism index is of limited value where E (instrumental colour difference for a given illuminant, see EN 13523-3:2001) is > 0,5. The metamerism index is not suited for determining the absolute colour difference or colour constancy of a given specimen at change of illuminant. The colour difference under the reference illuminant is to be measured in colour coordinates L*, a* and b* (see EN 13523-3:2001). Excluded from this method are organic coatings producing fluorescence and/or which are multicoloured, pearlescent or metallic.
Keywords:
Coating materials, Coatings, Coil coatings, Colour, Definitions, Index of metamerism, Metal coating, Metals, Metamerism, Paints, Presentation of colour, Reflection characteristics, Specification (approval), Testing
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