SIST EN 13523-15:2015

Coil coated metals - Test methods - Part 15: Metamerism

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.

Bandbeschichtete Metalle - Prüfverfahren - Teil 15: Metamerie

Dieser Teil von EN 13523 legt das Verfahren zum Bestimmen von Metamerie bei einem Probenpaar einer organischen Beschichtung auf einem metallischen Substrat fest.
Wenn zwei Farbproben identische spektrale Reflexionskurven aufweisen, ist ihre Farbe bei jeder Lichtart unabhängig von deren spektralen Eigenschaften gleich. Dies wird "unbedingt gleich" genannt. Es ist auch möglich, dass zwei Farbproben, die unterschiedliche spektrale Reflexionskurven aufweisen, unter einer bestimmten Lichtquelle gleich aussehen, jedoch nicht unter einer anderen Lichtquelle mit anderen spektralen Eigenschaften. Dies wird "metamer" genannt.
Eine quantitative Beschreibung der Metamerie ist der "Metamerie-Index".
Die Angabe des Metamerie-Index ist von begrenztem Wert, wenn E (der gemessene Farbabstand für eine bestimmte Lichtart, siehe EN 13523-3:2001) > 0,5 ist. Der Metamerie-Index ist nicht geeignet zum Bestimmen des absoluten Farbabstands oder der Farbkonstanz einer bestimmten Probe bei Lichtartwechsel.
Der Farbabstand unter der Bezugslichtart ist durch die Farbmaßzahlen L*, a* und b* (siehe EN 13523-3:2001) zu messen.
Von diesem Verfahren ausgeschlossen sind fluoreszierende Beschichtungen, mehrfarbige Proben, Proben mit Metallic-Beschichtungen und Proben, die Perlglanzeffekte aufweisen.

Tôles prélaques - Méthodes d'essai - Partie 15: Métamérism

La présente partie de l’EN 13523 décrit la méthode de détermination du métamérisme de plusieurs échantillons d’un revêtement organique de même couleur sur un support métallique.
Lorsque deux échantillons de couleur ont des courbes de réflexion spectrale identiques, ils sont de la même couleur quel que soit l’illuminant et ses caractéristiques spectrales. Il s’agit d’un «appariement spectral». Il se peut aussi que deux échantillons de couleur n’ayant pas la même courbe de réflexion spectrale présentent la même couleur sous une source lumineuse donnée, mais pas sous une autre dont les caractéristiques spectrales sont différentes ; il s’agit alors d’un «appariement métamérique».
L’indice de métamérisme constitue une description quantitative du métamérisme.
Les informations de l’indice de métamérisme ont une valeur limitée lorsque ΔE (différence de couleur mesurée par des instruments pour un illuminant donné, voir EN 13523-3:2001) est supérieur à 0,5. L’indice de métamérisme ne permet pas de déterminer la différence de couleur absolue ou la constance de couleur d’une éprouvette donnée si l’illuminant change.
La différence de couleur sous l’illuminant de référence est à mesurer en coordonnées chromatiques L*, a* et b* (voir EN 13523-3:2001).
Cette méthode ne s’applique pas aux revêtements organiques fluorescents et/ou multicolores, perlés ou métalliques.

Prevlečene kovine, ki se navijajo - Preskusne metode - 15. del: Metamerija

Ta del standarda EN 13523 določa izraze za postopek za določanje metamerije barvnega ujemanja organske prevleke na kovinski podlagi.
Če imata dva barvna vzorca identični krivulji spektralnega odboja, se ujemata pod vsemi osvetlitvami, ne glede na njihove spektralne značilnosti. To je »spektralno ujemanje«. Mogoče je tudi, da se dva barvna vzorca z različnima krivuljama spektralnega odboja ujemata pod določenim virom svetlobe, ne ujemata pa se pod drugim virom svetlobe z drugačnimi spektralnimi značilnostmi; takšna ujemanja so »metamerična«.
Eden od kvantitativnih opisov metamerije je tako imenovani »metamerični indeks«.
Informacije metameričnega indeksa imajo omejeno vrednost, če je E (instrumentalna barvna razlika dane osvetlitve, glej EN 13523-3:2001) > 0,5. Metamerični indeks ni primeren za ugotavljanje absolutne barvne razlike ali barvne stalnosti danega vzorca ob spremembi osvetlitve.
Barvna razlika pod referenčno osvetlitvijo se izmeri v barvnih koordinatah L*, a* in b* (glej EN 13523-3:2001).
Ta metoda ne zajema organskih prevlek, ki proizvajajo fluorescenco in/ali imajo večbarvni, biserni ali kovinski učinek.

General Information

• Status: Withdrawn
• Public Enquiry End Date: 31-Mar-2014
• Publication Date: 07-Sep-2015
• Withdrawal Date: 07-Nov-2021
• ICS: 17.180.20 - Colours and measurement of light
• ICS: 25.220.60 - Organic coatings
• Technical Committee: IBLP - Paints and varnishes
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 02-Nov-2021
• Due Date: 25-Nov-2021
• Completion Date: 08-Nov-2021
• Ref Project: EN 13523-15:2015 - Coil coated metals - Test methods - Part 15: Metamerism

Relations

• Replaced By: SIST EN 13523-3:2021 - Coil coated metals - Test methods - Part 3: Colour difference and metamerism - Instrumental comparison
• Effective Date: 01-Dec-2021
• Replaces: SIST EN 13523-15:2003 - Coil coated metals - Test methods - Part 15: Metamerism
• Effective Date: 01-Oct-2015

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.HWDPHULMDBandbeschichtete Metalle - Prüfverfahren - Teil 15: MetamerieTôles prélaques - Méthodes d'essai - Partie 15: MétamérismCoil coated metals - Test methods - Part 15: Metamerism25.220.60Organske prevlekeOrganic coatings17.180.20Barve in merjenje svetlobeColours and measurement of lightICS:Ta slovenski standard je istoveten z:EN 13523-15:2015SIST EN 13523-15:2015en,fr,de01-oktober-2015SIST EN 13523-15:2015SLOVENSKI
STANDARDSIST EN 13523-15:20031DGRPHãþD



SIST EN 13523-15:2015



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13523-15
July 2015 ICS 25.220.60 Supersedes EN 13523-15:2002English Version
Coil coated metals - Test methods - Part 15: Metamerism
Tôles prélaquées - Méthodes d'essai - Partie 15: Métamérisme
Bandbeschichtete Metalle - Prüfverfahren - Teil 15: Metamerie This European Standard was approved by CEN on 27 May 2015.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13523-15:2015 ESIST EN 13523-15:2015



EN 13523-15:2015 (E) 2 Contents Page European foreword .3 1 Scope .5 2 Normative references .5 3 Terms and definitions .5 4 Principle .5 5 Apparatus .6 5.1 Spectrophotometer (see EN 13523-3) .6 6 Sampling .6 7 Test panels .6 8 Procedure .6 8.1 Calibration .6 8.2 Measurement .6 9 Expression of results .7 10 Precision .7 11 Test report .8 Bibliography .9 SIST EN 13523-15:2015



EN 13523-15:2015 (E) 3 European foreword This document (EN 13523-15:2015) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes”, the secretariat of which is held by DIN. This document supersedes EN 13523-15:2002. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2016, and conflicting national standards shall be withdrawn at the latest by January 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. The main technical changes are: a) the specification concerning the test illuminant of the spectrophotometer was amended; b) the formulas in Clause 9 were aligned with the current standards for colorimetry (EN ISO 11664-4) and metamerism index (DIN 6172); c) a reference to EN 13523-0 concerning conditioning of the test panels was added. EN 13523, Coil coated metals — Test methods, consists of the following parts: — Part 0: General introduction — Part 1: Film thickness — Part 2: Gloss — Part 3: Colour difference — Instrumental comparison — Part 4: Pencil hardness — Part 5: Resistance to rapid deformation (impact test) — Part 6: Adhesion after indentation (cupping test) — Part 7: Resistance to cracking on bending (T-bend test) — Part 8: Resistance to salt spray (fog) — Part 9: Resistance to water immersion — Part 10: Resistance to fluorescent UV radiation and water condensation — Part 11: Resistance to solvents (rubbing test) — Part 12: Resistance to scratching — Part 13: Resistance to accelerated ageing by the use of heat — Part 14: Chalking (Helmen method) SIST EN 13523-15:2015



EN 13523-15:2015 (E) 4 — Part 15: Metamerism — Part 16: Resistance to abrasion — Part 17: Adhesion of strippable films — Part 18: Resistance to staining — Part 19: Panel design and method of atmospheric exposu
...

SLOVENSKI STANDARD
oSIST prEN 13523-15:2014
01-marec-2014
3UHYOHþHQHNRYLQHNLVHQDYLMDMR3UHVNXVQHPHWRGHGHO0HWDPHULMD
Coil coated metals - Test methods - Part 15: Metamerism
Bandbeschichtete Metalle - Prüfverfahren - Teil 15: Metamerie
Tôles prélaques - Méthodes d'essai - Partie 15: Métamérism
Ta slovenski standard je istoveten z: prEN 13523-15
ICS:
17.180.20 Barve in merjenje svetlobe Colours and measurement of
light
25.220.60 Organske prevleke Organic coatings
oSIST prEN 13523-15:2014 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 13523-15:2014

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oSIST prEN 13523-15:2014

EUROPEAN STANDARD
DRAFT
prEN 13523-15
NORME EUROPÉENNE

EUROPÄISCHE NORM

January 2014
ICS 25.220.60 Will supersede EN 13523-15:2002
English Version
Coil coated metals - Test methods - Part 15: Metamerism
Tôles prélaquées - Méthodes d'essai - Partie 15: Bandbeschichtete Metalle - Prüfverfahren - Teil 15:
Métamérisme Metamerie
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 139.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13523-15:2014 E
worldwide for CEN national Members.

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oSIST prEN 13523-15:2014
prEN 13523-15:2014 (E)
Contents
Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions .5
4 Principle .5
5 Apparatus .5
5.1 Spectrophotometer (see EN 13523-3) .5
6 Sampling .5
7 Test panels .5
8 Procedure .6
8.1 Calibration .6
8.2 Measurement .6
9 Expression of results .6
10 Precision .6
11 Test report .7
Bibliography .8


2

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oSIST prEN 13523-15:2014
prEN 13523-15:2014 (E)
Foreword
This document (prEN 13523-15:2014) has been prepared by Technical Committee CEN/TC 139 “Paints and
varnishes”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 13523-15:2002.
The main technical changes are:
a) the specification concerning the test illuminant of the spectrophotometer was amended;
b) a reference to EN 13523-0 concerning preconditioning of the test panels was added.
EN 13523, Coil coated metals — Test methods, consists of the following parts:
 Part 0: General introduction and list of test methods
 Part 1: Film thickness
 Part 2: Gloss
 Part 3: Colour difference — Instrumental comparison
 Part 4: Pencil hardness
 Part 5: Resistance to rapid deformation (impact test)
 Part 6: Adhesion after indentation (cupping test)
 Part 7: Resistance to cracking on bending (T-bend test)
 Part 8: Resistance to salt spray (fog)
 Part 9: Resistance to water immersion
 Part 10: Resistance to fluorescent UV radiation and water condensation
 Part 11: Resistance to solvents (rubbing test)
 Part 12: Resistance to scratching
 Part 13: Resistance to accelerated ageing by the use of heat
 Part 14: Chalking (Helmen method)
 Part 15: Metamerism
 Part 16: Resistance to abrasion
 Part 17: Adhesion of strippable films
3

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oSIST prEN 13523-15:2014
prEN 13523-15:2014 (E)
 Par
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