Corrosion of metals and alloys - Corrosion tests in artificial atmosphere - Accelerated outdoor test by intermittent spraying of a salt solution (Scab test) (ISO 11474:1998)

EN ISO 11474 is to define a method of assessing the corrosion resistance of metals by an accelerated outdoor corrosion test. In this test the term 'metal' includes metallic materials with or without corrosion protection. The accelerated outdoor corrosion test applies to - organic coatings on metals; - metallic coatings (anodic and cathodic); - chemical conversion coatings; - metals and their alloys. The method is especially suitable for comparative testing in the optimization of surface treatment systems.

Korrosion von Metallen und Legierungen - Korrosionsprüfung in künstlicher Atmosphäre - Beschleunigte Außenbewitterung (Freibewitterung) mit intermittierendem Sprühen einer Salzlösung (Scab-Test) (ISO 11474:1998)

Diese Internationale Norm hat den Zweck, ein Verfahren festzulegen, das die Korrosionsbeständigkeit von Metallen durch eine beschleunigte Korrosionsprüfung im Freien beurteilt.
In dieser Internationalen Norm umfasst der Begriff „Metall“ Werkstoffe mit oder ohne Korrosionsschutz.
Die beschleunigte Korrosionsprüfung im Freien gilt für:
-   organische Beschichtungen auf Metallen;
-   metallische Beschichtungen (anodische und kathodische Beschichtungen);
-   chemische Konversionsschichten;
-   Metalle und deren Legierungen.
Das Verfahren ist besonders geeignet für Vergleichsprüfungen zur Optimierung von Systemen zur Oberflächenbehandlung.

Corrosion des métaux et alliages - Essais de corrosion en atmosphère artificielle - Essai de corrosion accéléré en extérieur par vaporisation intermittente d'un brouillard salin (Scab test) (ISO 11474:1998)

Korozija kovin in zlitin - Korozijski preskus v umetni atmosferi - Pospešeni preskus v naravi z izmeničnim pršenjem slanice (ISO 11474:1998)

Namen standarda EN ISO 11474 je določitev metode za ocenjevanje korozijske odpornosti kovin s pospešenim preskusom v naravi. V tem preskusu izraz „kovine“ vključuje kovinske materiale s korozijsko zaščito ali brez. Pospešeni korozijski preskus v naravi velja za – organske prevleke na kovinah; – kovinske prevleke (anodne in katodne); – kemijsko reakcijske prevleke; – kovine in njihove zlitine. Ta metoda je zlasti primerna za primerjalno preskušanje pri optimizaciji sistemov površinske obdelave.

General Information

Status
Published
Publication Date
01-Jun-2014
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
14-May-2014
Due Date
19-Jul-2014
Completion Date
02-Jun-2014

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Korrosion von Metallen und Legierungen - Korrosionsprüfung in künstlicher Atmosphäre - Beschleunigte Außenbewitterung (Freibewitterung) mit intermittierendem Sprühen einer Salzlösung (Scab-Test) (ISO 11474:1998)Corrosion des métaux et alliages - Essais de corrosion en atmosphère artificielle - Essai de corrosion accéléré en extérieur par vaporisation intermittente d'un brouillard salin (Scab test) (ISO 11474:1998)Corrosion of metals and alloys - Corrosion tests in artificial atmosphere - Accelerated outdoor test by intermittent spraying of a salt solution (Scab test) (ISO 11474:1998)77.060Korozija kovinCorrosion of metalsICS:Ta slovenski standard je istoveten z:EN ISO 11474:2014SIST EN ISO 11474:2014en01-julij-2014SIST EN ISO 11474:2014SLOVENSKI

STANDARD
SIST EN ISO 11474:2014
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN ISO 11474
March 2014 ICS 77.060 English Version

Corrosion of metals and alloys - Corrosion tests in artificial atmosphere - Accelerated outdoor test by intermittent spraying of a salt solution (Scab test) (ISO 11474:1998)

Corrosion des métaux et alliages - Essais de corrosion en atmosphère artificielle - Essai de corrosion accéléré en extérieur par vaporisation intermittente d'un brouillard salin (Scab test) (ISO 11474:1998)

Korrosion von Metallen und Legierungen - Korrosionsprüfung in künstlicher Atmosphäre - Beschleunigte Außenbewitterung (Freibewitterung) mit intermittierendem Sprühen einer Salzlösung (Scab-Test) (ISO 11474:1998) This European Standard was approved by CEN on 9 February 2014.

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 © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11474:2014 ESIST EN ISO 11474:2014

EN ISO 11474:2014 (E) 2 Contents Page Foreword ..............................................................................................................................................................3 SIST EN ISO 11474:2014

EN ISO 11474:2014 (E) 3 Foreword The text of ISO 11474:1998 has been prepared by Technical Committee ISO/TC 156 “Corrosion of metals and alloys” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 11474:2014 by Technical Committee CEN/TC 262 “Metallic and other inorganic coatings” the secretariat of which is held by BSI. 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 September 2014, and conflicting national standards shall be withdrawn at the latest by September 2014. 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. 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 11474:1998 has been approved by CEN as EN ISO 11474:2014 without any modification.

SIST EN ISO 11474:2014
SIST EN ISO 11474:2014

AReference numberISO 11474:1998(E)INTERNATIONALSTANDARDISO11474First edition1998-03-15Corrosion of metals and alloys — Corrosiontests in artificial atmosphere — Acceleratedoutdoor test by intermittent spraying of asalt solution (Scab test)Corrosion des métaux et alliages — Essais de corrosion en atmosphèreartificielle — Essai de corrosion accéléré en extérieur par vaporisationintermittente d'un brouillard salin («Scab test»)SIST EN ISO 11474:2014

ISO 11474:1998(E)©

ISO 1998All rights reserved. Unless otherwise specified, no part of this publication may be reproducedor utilized in any form or by any means, electronic or mechanical, including photocopying andmicrofilm, without permission in writing from the publisher.International Organization for StandardizationCase postale 56 · CH-1211 Genève 20 · SwitzerlandInternetcentral@isocs.iso.chX.400c=ch; a=400net; p=iso; o=isocs; s=centralPrinted in SwitzerlandiiForewordISO (the International Organization for Standardization) is a worldwidefederation of national standards bodies (ISO member bodies). The work ofpreparing International Standards is normally carried out through ISOtechnical committees. Each member body interested in a subject for whicha technical committee has been established has the right to be representedon that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISOcollaborates closely with the International Electrotechnical Commission(IEC) on all matters of electrotechnical standardization.Draft International Standards adopted by the technical committees arecirculated to the member bodies for voting. Publication as an InternationalStandard requires approval by at least 75 % of the member bodies castinga vote.International Standard ISO 11474 was prepared by Technical CommitteeISO/TC 156, Corrosion of metals and alloys.Annex A of this International Standard is for information only.SIST EN ISO 11474:2014

© ISOISO 11474:1998(E)iiIntroductionCorrosion testing under atmospheric exposure conditions is mostcommonly executed as field tests. As the corrosion rate depends on theenvironment of the test site, the latter should ideally be selected to bestrepresent the environments in which the material is likely to be used. Theresults of field tests cannot therefore be used to predict serviceperformance exactly but they do provide the best guidance to serviceperformance. Field tests, however, may require exposure periodscorresponding to the expected service life of a material.To promote corrosion and accelerate the degradation process, test siteswith a high atmospheric corrosivity can be used. Such test sites may belocated in marine environments or in highly polluted industrial areas. Toincrease the corrosion rate at other test sites, artificial measures need tobe adopted. In the method described, the corrosion process during outdoorexposure is accelerated by intermittently spraying a solution of sodiumchloride (mass fraction 3 %) on to the test surface thus simulating andenhancing the environmental stress prevailing at marine test sites. Themethod is mainly intended for comparative testing and one or morereference materials are therefore always necessary. The results obtaineddo not permit any more far-reaching conclusions on the corrosionresistance of the tested metal in all environments in which it may be used.The method described can nevertheless give valuable information on therelative performance of materials in service.NOTE —

The title of this International Standard presents (within parentheses) acommon name for this kind of test. Hitherto, “scab test” has been used mainly in anarrower sense to denote similar test methods developed within the car industryfor the study of underfilm corrosion, particularly where painted steel surfaces havebeen locally damaged by stone shots. The word “scab” is no acronym. It simplyrefers to a well-known but not very pleasant disease and its symptom, i.e. a kind ofcrusty spots on the skin. In this International Standard, the same name is used in awider sense to denote a test method which is applicable to all kinds of metallicsubstrate with or without coating. Some of these substrates will show a scab-likeappearance after being tested. Others will not.SIST EN ISO 11474:2014

SIST EN ISO 11474:2014
INTERNATIONAL STANDARD

© ISOISO 11474:1998(E)1Corrosion of metals and alloys — Corrosion tests in artificialatmosphere — Accelerated outdoor test by intermittent spraying ofa salt solution (Scab test)1

ScopeThe purpose of this International Standard is to define a method of assessing the corrosion resistance of metals byan accelerated outdoor corrosion test.In this International Standard, the term “metal” includes metallic materials with or without corrosion protection.The accelerated outdoor corrosion test applies to—organic coatings on metals;—metallic coatings (anodic and cathodic);—chemical conversion coatings;—metals and their alloys.The method is especially suitable for comparative testing in the optimization of surface treatment systems.2

Normative referencesThe following standards contain provisions which, through reference in this text, constitute provisions of thisInternational Standard. At the time of publication, the editions indicated were valid. All standards are subject torevision, and parties to agreements based on this International Standard are encouraged to investigate thepossibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintainregisters of currently valid International Standards.ISO 2810:—1), Paints and varnishes — Notes for guidance on the conduct of natural weathering tests.ISO 8407:1991, Corrosion of metals and alloys — Removal of corrosion products from corrosion

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