Anodizing of aluminium and its alloys — Accelerated test of light fastness of coloured anodic oxidation coatings using artificial light

ISO 2135 specifies an accelerated test method for assessing the fastness, using artificial light, of coloured anodic oxidation coatings on aluminium and its alloys. For evaluating light fastness on exterior exposure, only outdoor exposure under conditions comparable with actual service is completely satisfactory. Accelerated testing is suitable as a quality-control test of coloured anodic oxidation coatings whose light fastness number has already been established by means of outdoor exposure testing. The method is applicable to coloured anodic oxidation coatings on aluminium and its alloys produced by any means and for any purpose. However, the method is not suitable for the measurement of coloured coatings with a light fastness number already established by means of outdoor exposure testing and of less than 6.

Anodisation de l'aluminium et de ses alliages — Essai accéléré de solidité à la lumière artificielle des couches d'oxydation anodique colorées

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Status
Published
Publication Date
08-Oct-2017
Current Stage
6060 - International Standard published
Start Date
09-Oct-2017
Completion Date
09-Oct-2017
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Effective Date
06-Jun-2022

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ISO 2135:2017 - Anodizing of aluminium and its alloys -- Accelerated test of light fastness of coloured anodic oxidation coatings using artificial light
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INTERNATIONAL ISO
STANDARD 2135
Fourth edition
2017-10
Anodizing of aluminium and its
alloys — Accelerated test of light
fastness of coloured anodic oxidation
coatings using artificial light
Anodisation de l'aluminium et de ses alliages — Essai accéléré de
solidité à la lumière artificielle des couches d'oxydation anodique
colorées
Reference number
ISO 2135:2017(E)
ISO 2017
---------------------- Page: 1 ----------------------
ISO 2135:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

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ii © ISO 2017 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 2135:2017(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principle ........................................................................................................................................................................................................................ 1

5 Apparatus ..................................................................................................................................................................................................................... 2

6 Test specimen .......................................................................................................................................................................................................... 2

6.1 Sampling ....................................................................................................................................................................................................... 2

6.2 Size .................................................................................................................................................................................................................... 2

6.3 Treatment before testing ................................................................................................................................................................ 2

7 Procedure..................................................................................................................................................................................................................... 2

7.1 Preparation of test specimen ...................................................................................................................................................... 2

7.2 Exposure conditions ........................................................................................................................................................................... 2

7.3 Period of exposure ............................................................................................................................................................................... 3

8 Expression of results ........................................................................................................................................................................................ 3

8.1 General ........................................................................................................................................................................................................... 3

8.2 Visual assessment ................................................................................................................................................................................ 3

8.3 Instrumental assessment ............................................................................................................................................................... 4

9 Test report ................................................................................................................................................................................................................... 4

Annex A (normative) Various light sources ................................................................................................................................................... 5

Bibliography ................................................................................................................................................................................................................................ 6

© ISO 2017 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 2135:2017(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 79, Light metals and their alloys,

Subcommittee SC 2, Organic and anodic oxidation coatings on aluminium.

This fourth edition cancels and replaces the third edition (ISO 2135:2010), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— the information on the test specimen has been added;
— the black panel temperature has been added;

— the instrumental assessment for colour change and gloss retention has been added;

— the specification of various light sources has been added as a new Annex A.
iv © ISO 2017 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 2135:2017(E)
Anodizing of aluminium and its alloys — Accelerated test
of light fastness of coloured anodic oxidation coatings
using artificial light
1 Scope

This document specifies an accelerated test method for assessing the fastness, using artificial light, of

coloured anodic oxidation coatings on aluminium and its alloys.

For evaluating light fastness on exterior exposure, only outdoor exposure under conditions comparable

with actual service is completely satisfactory.

Accelerated testing is suitable as a quality-control test of coloured anodic oxidation coatings whose

light fastness number has already been established by means of outdoor exposure testing.

The method is applicable to coloured anodic oxidation coatings on aluminium and its alloys produced

by any means and for any purpose.

However, the method is not suitable for the measurement of coloured coatings with a light fastness

number already established by means of outdoor exposure testing and of less than 6.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 4582, Plastics — Determination of changes in colour and variations in properties after exposure to

glass-filtered solar radiation, natural weathering or laboratory radiation sources

ISO 7583, Anodizing of aluminium and its alloys — Terms and definitions
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 7583 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://
...

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