SIST EN ISO 8565:2012

SLOVENSKI STANDARD
SIST EN ISO 8565:2012
01-januar-2012
1DGRPHãþD
SIST EN ISO 8565:1999
Kovine in zlitine - Korozijski preskusi v atmosferi - Splošne zahteve (ISO
8565:2011)
Metals and alloys - Atmospheric corrosion testing - General requirements (ISO
8565:2011)
Metalle und Legierungen - Korrosionsversuche in der Atmosphäre - Allgemeine
Anforderungen (ISO 8565:2011)
Métaux et alliages - Essais de corrosion atmosphérique - Exigences générales (ISO
8565:2011)
Ta slovenski standard je istoveten z: EN ISO 8565:2011
ICS:
77.060 Korozija kovin Corrosion of metals
SIST EN ISO 8565:2012 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 8565:2012

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SIST EN ISO 8565:2012


EUROPEAN STANDARD
EN ISO 8565

NORME EUROPÉENNE

EUROPÄISCHE NORM
July 2011
ICS 77.060 Supersedes EN ISO 8565:1995
English Version
Metals and alloys - Atmospheric corrosion testing - General
requirements (ISO 8565:2011)
Métaux et alliages - Essais de corrosion atmosphérique - Metalle und Legierungen - Korrosionsversuche in der
Exigences générales (ISO 8565:2011) Atmosphäre - Allgemeine Anforderungen (ISO 8565:2011)
This European Standard was approved by CEN on 30 June 2011.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8565:2011: E
worldwide for CEN national Members.

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SIST EN ISO 8565:2012
EN ISO 8565:2011 (E)
Contents Page
Foreword .3

2

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SIST EN ISO 8565:2012
EN ISO 8565:2011 (E)
Foreword
This document (EN ISO 8565:2011) has been prepared by Technical Committee ISO/TC 156 "Corrosion of
metals and alloys" in collaboration with 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 January 2012, and conflicting national standards shall be withdrawn at
the latest by January 2012.
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.
This document supersedes EN ISO 8565:1995.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 8565:2011 has been approved by CEN as a EN ISO 8565:2011 without any modification.

3

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SIST EN ISO 8565:2012

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SIST EN ISO 8565:2012

INTERNATIONAL ISO
STANDARD 8565
Second edition
2011-07-01

Metals and alloys — Atmospheric
corrosion testing — General
requirements
Métaux et alliages — Essais de corrosion atmosphérique — Exigences
générales




Reference number
ISO 8565:2011(E)
©
ISO 2011

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SIST EN ISO 8565:2012
ISO 8565:2011(E)

COPYRIGHT PROTECTED DOCUMENT


©  ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland

ii © ISO 2011 – All rights reserved

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SIST EN ISO 8565:2012
ISO 8565:2011(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Requirements for test specimens.1
4 Atmospheric corrosion test sites .4
5 Test site characterization .6
6 Operating conditions .7
7 Test procedure.8
8 Test report.8
Annex A (normative) Environmental factors characterizing atmospheric exposure conditions.10
Bibliography.11

© ISO 2011 – All rights reserved iii

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SIST EN ISO 8565:2012
ISO 8565:2011(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 8565 was prepared by Technical Committee ISO/TC 156, Corrosion of metals and alloys.
This second edition cancels and replaces the first edition (ISO 8565:1992), which has been technically revised.
iv © ISO 2011 – All rights reserved

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SIST EN ISO 8565:2012
ISO 8565:2011(E)
Introduction
Corrosion testing under atmospheric exposure conditions is carried out in order
1)
⎯ to obtain data on the corrosion resistance of metals, alloys , metallic and other inorganic coatings in
atmospheric environments,
⎯ to evaluate the type of corrosion of particular metals, and
⎯ to obtain data for corrosivity determination and estimation.
It involves exposure of the specimens to the action of atmospheric environments at the test sites, and periodic
checking of the test specimens. It does not cover service corrosion testing.
The corrosion rate of the specified metal depends on the environment of the atmospheric corrosion test site.
The relationship between corrosion rates for metals and atmospheric variables is complex. Therefore, the
results of field tests cannot be used to predict service performance exactly, but do provide an approximate
guidance to service performance.



1) Hereinafter referred to as “metals”.
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SIST EN ISO 8565:2012

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SIST EN ISO 8565:2012
INTERNATIONAL STANDARD ISO 8565:2011(E)

Metals and alloys — Atmospheric corrosion testing — General
requirements
1 Scope
This International Standard establishes general requirements for stationary corrosion testing of metals and
metallic and other inorganic coatings under atmospheric conditions carried out in the open air or under
shelters. It can also be applied for testing of complex specimens and assemblies of metallic materials.
2 Normative references
The following referenced documents are indispensable for the application 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 4226, Air quality — General aspects — Units of measurement
ISO 8044, Corrosion of metals and alloys — Basic terms and definitions
ISO 8407, Corrosion of metals and alloys — Removal of corrosion products from corrosion test specimens
ISO 9169, Air quality — Definition and determination of performance characteristics of an automatic
measuring system
ISO 9223, Corrosion of metals and alloys — Corrosivity of atmospheres — Classification, determination and
estimation
ISO 9225, Corrosion of metals and alloys — Corrosivity of atmospheres — Measurement of environmental
parameters affecting corrosivity of atmospheres
ISO 9226, Corrosion of metals and alloys — Corrosivity of atmospheres — Determination of corrosion rate of
standard specimens for the evaluation of corrosivity
ISO 10289, Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates —
Rating of test specimens and manufactured articles subjected to corrosion tests
3 Requirements for test specimens
3.1 Types of specimen
3.1.1 Flat sheet specimens
Rectangular specimens in the form of flat sheets are the preferred type as they can be readily weighed and
measured, and their simple shape facilitates attachment to test frames. A convenient specimen size is
150 mm × 100 mm. Specimens may be of different size provided that they can be accurately evaluated. The
specimen thickness shall be adequate to ensure that the specimens will survive the intended test period. The
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SIST EN ISO 8565:2012
ISO 8565:2011(E)
specimen thickness shall also take into account the possibility of mechanical effects and of intergranular
corrosion in some materials. The most convenient thickness is 1 mm to 3 mm.
For specimens with metallic coatings, the surface area of the test specimens should be as large as possible,
2 2
in any case not less than 50 cm (5 cm × 10 cm). If the coated articles used are smaller than 50 cm in area,
specimens of the same kind may be combined to total the required minimum surface area. However, the
results obtained will not necessarily be comparable with those obtained on specially prepared test specimens
of the specified minimum area.
3.1.2 Irregularly shaped specimens
Other specimen shapes, such as bolts, tubes, rods, angles and even assemblies, may be tested if necessary.
The ends of tube specimens shall be sealed if only corrosion of the outside surface is of interest.
Complex specimens, such as assemblies, may contain crevices, water traps, welded joints and dissimilar
metals. It is therefore important to take account of the effects of these on the corrosion resistance of the
assembly. Care should also be taken to position the assembly to simulate its intended use.
3.1.3 Specimens with welded joints
Atmospheric corrosion tests on welded joints are intended to reveal any tendency for preferential corrosion in
the weld zone arising from metallurgical or compositional differences between the weld metal and the parent
material. The joints shall preferably be placed in the centre of the test specimen, parallel to its long side
(preferred position), or perpendicular.
3.2 Specimen preparation
Because atmospheric corrosion tests may extend over many years, it is important to ensure that specimens
are clearly identified and records of data are carefully kept. It is normally necessary to cut specimens from
larger pieces of the metal to be tested and to carry out deburring. These operations involve the risk of surface
damage to the specimens and, with some metals, may lead to significant changes in metallurgical condition
(for example, work-hardening of sheared or cut edges). Surface damage can be avoided with care, whilst
work-hardened edges should be removed by machining, unless the effects of this condition are being
specifically evaluated. Similar damage may be caused by other operations, such as flame-cutting, sawing and
grinding. When the results of the test are to be compared with service performance, it is recommended that
specimens be exposed with surfaces identical or similar to those, which would apply in service. For all other
purposes, a well-defined surface preparation is needed.
Surface preparation may involve a combination of a degreasing stage using organic solvents or alkaline
degreasing fluids and a mechanical or chemical descaling treatment for surfaces bearing mill scale,
heat-treatment scale or rust. Suitable descaling treatments for a wide range of metals are given in ISO 8407.
For metallic and other inorganic coatings, it is absolutely necessary to avoid cleaning methods which may
attack the surface of specimens.
3.3 Handling
After final surface cleaning before exposure, it is important that limited handling occurs. In general, it is
necessary to use clean gloves in the final handling operations.
3.4 Marking of specimens
The test specimens may be marked in such a way that no confusion during the exposure is possible. Marking
shall be legible and durable over the whole period of exposure and shall be made on those areas of the test
specimens that are not subjected to visual assessment and have no functional purpose.
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SIST EN ISO 8565:2012
ISO 8565:2011(E)
Methods suggested for marking are different. The test specimens may be marked with appropriate numbers
by stamping. For metallic coatings, the preferred method is positional notch coding before the protective
coating is applied. Other marking procedures can be used, provided that the requirements of legibility and
durability are met.
The area affected by marking shall be minimized. The establishment of a reliable map of specimen identity,
exposure data and location on the exposure frame is recommended.
3.5 Number of specimens
The number of test specimens of each type used in a given exposure shall not be less than three for each
exposure time interval.
Three specimens should suffice for simple comparative test programmes. However, for more complex
programmes, more specimens will be needed, according to the statistical requirements.
3.6 Control and reference specimens
3.6.1 General
It is desirable that extra specimens be included in the test programme, in order to fulfil various requirements of
control and reference.
3.6.2 Control specimens
Control specimens are replicates of exposed test specimens which are stored under non-corrosive conditions
(see 3.7). They may be used to determine changes in physical and mechanical properties as a result of
exposure of the specimens.
3.6.3 Reference specimens
When testing new or modified materials, specimens of the original (known) material are used for comparison
purposes and exposed together with the test specimens.
3.7 Storage
During storage of the test specimens before exposure, and during storage of control specimens, care shall be
taken to avoid mechanical damage and contact with other specimens. A room with a controlled temperature
and a relative humidity of 65 % or less shall be used for storage purposes. Particularly sensitive specimens
shall be stored in a desiccator or sealed in plastic bags with desiccant.
3.8 Specimen data records
For each series of test specimens, records of data are needed for the assessment of the corrosion effects
(see Clause 8). These records may include the following:
a) in the case of uncoated metal samples:
⎯ chemical composition,
⎯ mass,
⎯ shape and size,
⎯ surface finish characteristics,
⎯ heat treatment,
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SIST EN ISO 8565:2012
ISO 8565:2011(E)
⎯ basic physical properties (mechanical, electrical or physical-chemical) and surface roughness,
⎯ initial state of specimen surface before testing (for metals which may change their structure during
long-term exposure under atmospheric conditions),
⎯ method of preparation of the test panels,
⎯ test method for the metal surface treatment,
⎯ specification of the metal according to relevant standards or trade marks,
⎯ specification of the test methods by which the individual properties were evaluated,
⎯ specification of the intermediate product from which the test panels were produced;
b) in the case of metallic and other inorganic coatings:
⎯ specification of the basis metal (substrate),
⎯ method of preparing the surface before
...