EN ISO 8993:2018

Anodizing of aluminium and its alloys - Rating system for the evaluation of pitting corrosion - Chart method (ISO 8993:2018)

This document specifies a chart rating system based on standard charts that provides a means of defining levels of performance of anodic oxidation coatings on aluminium and its alloys that have been subjected to corrosion tests.
This rating system is applicable to pitting corrosion resulting from
—          accelerated tests,
—          exposure to corrosive environments, and
—          practical service tests.
This document takes into account only pitting corrosion resulting from penetration of the protective anodic oxidation coating.

Anodisieren von Aluminium und Aluminiumlegierungen - Bewertungssystem für Lochkorrosion - Richtreihenmethode (ISO 8993:2018)

Anodisation de l'aluminium et de ses alliages - Système de cotation de la corrosion par piqûres - Méthode reposant sur des images-types (ISO 8993:2018)

Le présent document spécifie un système de cotation basé sur des images-types qui permet de définir des niveaux de performance de couches anodiques déposées sur l'aluminium et ses alliages, soumises à des essais de corrosion.
Ce système de cotation s'applique à la corrosion par piqûres résultant
—          d'essais accélérés,
—          de l'exposition à des milieux corrosifs, et
—          d'essais pratiques en service.
Le présent document ne tient compte que de la corrosion par piqûres résultant de la pénétration de la couche anodique de protection.

Anodizacija aluminija in aluminijevih zlitin - Ocenjevalni sistem za vrednotenje jamičaste korozije - Tabelarična metoda (ISO 8993:2018)

Ta dokument določa tabelarični ocenjevalni sistem na osnovi standardnih tabel, ki omogoča opredelitev ravni učinkovitosti anodno oksidiranih prevlek na aluminiju in aluminijevih zlitinah, ki so bile preskušene glede odpornosti proti koroziji.
Ta ocenjevalni sistem se uporablja za jamičasto korozijo, ki nastane kot posledica
– pospešenih preskusov,
– izpostavljenosti v korozivnem okolju in
– praktičnih delovnih preskusov.
Ta dokument obravnava samo jamičasto korozijo, ki je posledica prodiranja zaščitne anodno oksidirane prevleke.
OPOMBA: Standard ISO 8994[1] opisuje podoben ocenjevalni sistem, ki temelji na opredeljenih mrežah.

General Information

• Status: Published
• Publication Date: 23-Oct-2018
• Withdrawal Date: 29-Apr-2019
• ICS: 25.220.20 - Surface treatment
• ICS: 77.060 - Corrosion of metals
• Technical Committee: CEN/TC 132 - Aluminium and aluminium alloys
• Drafting Committee: CEN/TC 132 - Aluminium and aluminium alloys
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 24-Oct-2018
• Completion Date: 24-Oct-2018
• Ref Project: SIST EN ISO 8993:2018 - Anodizing of aluminium and its alloys - Rating system for the evaluation of pitting corrosion - Chart method (ISO 8993:2018)

Relations

• Replaces: EN ISO 8993:2010 - Anodizing of aluminium and its alloys - Rating system for the evaluation of pitting corrosion - Chart method (ISO 8993:2010)
• Effective Date: 31-Oct-2018

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2018
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SIST EN ISO 8993:2010
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Anodizing of aluminium and its alloys - Rating system for the evaluation of pitting
corrosion - Chart method (ISO 8993:2018)
Anodisieren von Aluminium und Aluminiumlegierungen - Bewertungssystem für
Lochkorrosion - Richtreihenmethode (ISO 8993:2018)
Anodisation de l'aluminium et de ses alliages - Système de cotation de la corrosion par
piqûres - Méthode reposant sur des images-types (ISO 8993:2018)
Ta slovenski standard je istoveten z: EN ISO 8993:2018
ICS:
25.220.20 Površinska obdelava Surface treatment
77.120.10 Aluminij in aluminijeve zlitine Aluminium and aluminium
alloys
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 8993
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2018
EUROPÄISCHE NORM
ICS 25.220.20; 77.060 Supersedes EN ISO 8993:2010
English Version
Anodizing of aluminium and its alloys - Rating system for
the evaluation of pitting corrosion - Chart method (ISO
8993:2018)
Anodisation de l'aluminium et de ses alliages - Système Anodisieren von Aluminium und
de cotation de la corrosion par piqûres - Méthode Aluminiumlegierungen - Bewertungssystem für
reposant sur des images-types (ISO 8993:2018) Lochkorrosion - Richtreihenmethode (ISO 8993:2018)
This European Standard was approved by CEN on 17 October 2018.

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, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8993:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 8993:2018) has been prepared by Technical Committee ISO/TC 79 "Light
metals and their alloys" in collaboration with Technical Committee CEN/TC 132 “Aluminium and
aluminium alloys” the secretariat of which is held by AFNOR.
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 April 2019, and conflicting national standards shall be
withdrawn at the latest by April 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 8993:2010.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 8993:2018 has been approved by CEN as EN ISO 8993:2018 without any modification.

INTERNATIONAL ISO
STANDARD 8993
Third edition
2018-09
Anodizing of aluminium and its
alloys — Rating system for the
evaluation of pitting corrosion —
Chart method
Anodisation de l'aluminium et de ses alliages — Système de cotation
de la corrosion par piqûres — Méthode reposant sur des images-types
Reference number
ISO 8993:2018(E)
©
ISO 2018
ISO 8993:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
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Published in Switzerland
ii © ISO 2018 – All rights reserved

ISO 8993:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Procedure for rating . 1
4.1 Preparation of test specimen . 1
4.2 Determination of chart rating . 2
5 Expression of results . 3
6 Test report . 3
Annex A (normative) Rating charts . 4
Bibliography .12
ISO 8993:2018(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
pa
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