SIST EN ISO 10062:2008

SLOVENSKI STANDARD
SIST EN ISO 10062:2008
01-april-2008
1DGRPHãþD
SIST EN ISO 10062:1999
Korozijski preskusi v umetni atmosferi pri zelo majhnih koncentracijah škodljivih
plinov (ISO 10062:2006)
Corrosion tests in artificial atmosphere at very low concentrations of polluting gas(es)
(ISO 10062:2006)
Korrosionsprüfungen in künstlicher Atmosphäre mit sehr niedrigen Konzentrationen von
Schadgas(en) (ISO 10062:2006)
Corrosion des métaux et alliages - Essais de corrosion en atmosphere artificielle a tres
faible concentration en gaz polluants (ISO 10062:2006)
Ta slovenski standard je istoveten z: EN ISO 10062:2008
ICS:
77.060
SIST EN ISO 10062:2008 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN ISO 10062
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2008
ICS 77.060 Supersedes EN ISO 10062:1995
English Version
Corrosion tests in artificial atmosphere at very low
concentrations of polluting gas(es) (ISO 10062:2006)
Corrosion des métaux et alliages - Essais de corrosion en Korrosionsprüfungen in künstlicher Atmosphäre mit sehr
atmosphère artificielle à très faible concentration en gaz niedrigen Konzentrationen von Schadgas(en) (ISO
polluants (ISO 10062:2006) 10062:2006)
This European Standard was approved by CEN on 29 December 2007.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10062:2008: E
worldwide for CEN national Members.

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EN ISO 10062:2008 (E)






Foreword



The text of ISO 10062:2006 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 10062:2008 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 July 2008, and conflicting national standards
shall be withdrawn at the latest by July 2008.
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 10062:1995.
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, 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 10062:2006 has been approved by CEN as EN ISO 10062:2008 without any
modifications.

2

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INTERNATIONAL ISO
STANDARD 10062
Second edition
2006-01-15

Corrosion tests in artificial atmosphere at
very low concentrations of polluting
gas(es)
Corrosion des métaux et alliages — Essais de corrosion en atmosphère
artificielle à très faible concentration en gaz polluants




Reference number
ISO 10062:2006(E)
©
ISO 2006

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ISO 10062:2006(E)
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Published in Switzerland

ii © ISO 2006 – All rights reserved

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ISO 10062:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 Apparatus . 2
5 Test methods. 2
6 Information to be given in the relevant specification . 6
7 Expression of results . 7
8 Test report . 7
Annex A (informative) Specifications for apparatus for corrosion tests in artificial atmospheres. 8
Annex B (informative) Typical apparatus for polluting gas corrosion tests. 11
Bibliography . 12

© ISO 2006 – All rights reserved iii

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ISO 10062:2006(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 10062 was prepared by Technical Committee ISO/TC 156, Corrosion of metals and alloys.
This second edition cancels and replaces the first edition (ISO 10062:1991), which has been technically
revised.
iv © ISO 2006 – All rights reserved

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ISO 10062:2006(E)
Introduction
Products with, for example, sensitive electrical functions, may, during storage or operation in indoor locations,
be affected by atmospheric corrosion dependent on climatic factors such as temperature, relative humidity, air
velocity and rate of change caused by temperature and humidity. Additionally, gaseous pollutants may
seriously affect the rate of corrosion, as well as the occurrence of different corrosion mechanisms.
Contaminants on the surface, such as salt, dust, oil and compounds liberated from plastics, may also affect
the rate and mechanism of corrosion.
Different corrosion-promoting gaseous pollutants dominate in different field environments:
⎯ sulfur dioxide and nitrogen oxides in atmospheres influenced by combustion of fossil fuels and in traffic
environments,
⎯ hydrogen sulfide in atmospheres in the vicinity of petrochemical and steel industry, decaying organic
matter, stagnant waters and animal shelters, and
⎯ hydrogen sulfide and chlorine compounds in the vicinity of pulp and paper industry; if chlorine is used for
bleaching
Those gaseous pollutants are known to act as single corrosion-promoting factors. However, in atmospheres
where more than one gaseous pollutant is present, synergistic effects may be initiated. As a result, a
considerable increase in the corrosion rate may occur, compared to the case when the different gaseous
pollutants act as single corrosion-promoting factors.
This International Standard is intended to
a) define a general method using atmospheres polluted by one or more gases at very low volume fractions
−6
u10 under specified conditions of temperature and relative humidity, so as to avoid condensation
phenomena during the test,
b) define the test apparatus and procedure required to achieve the best possible reproducibility,
c) assess performance under test conditions which accelerate corrosion; as knowledge of operating
conditions proceeds, more suitable pollutants or pollutant mixtures could be used.

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INTERNATIONAL STANDARD ISO 10062:2006(E)

Corrosion tests in artificial atmosphere at very low
concentrations of polluting gas(es)
WARNING — Safety rules for personnel: Handling of the gases used for testing can be hazardous and
must be left to skilled chemists or conducted under their control. The test equipment must be used
and maintained by skilled personnel, not only so that the tests can be performed correctly, but also
because of the hazards to health and safety that are involved.
1 Scope
This International Standard specifies tests which are intended to determine the influence of one or more
-6
flowing polluting gas(es) at volume fractions less than or equal to 10 on test samples and/or articles of
metals and alloys with or without corrosion protection under determined conditions of temperature and relative
humidity.
These tests apply to
a) metals and their alloys,
b) metallic coatings (anodic and cathodic),
c) metals with conversion coatings,
d) metals with anodic oxide coatings, and
e) metals with organic coatings.
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 554, Standard atmospheres for conditioning and/or testing — Specifications
ISO 558, Conditioning and testing — Standard atmospheres — Definitions
ISO 7384, Corrosion tests in artificial atmosphere — General requirements
ISO 8407, Corrosion of metals and alloys — Removal of corrosion products from corrosion test specimens
© ISO 2006 – All rights reserved 1

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ISO 10062:2006(E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
exposure time
interval of time elapsed between the moment when the specimens are introduced into the test chamber and
the end of the test
3.2
test duration
interval of time during which the specimens are exposed to polluting gases
4 Apparatus
Special attention shall be paid to equipment design and the choice of construction materials, in order that the
conditions (less than ± 1 °C for temperature and less than ± 3 % for relative humidity) are uniformly consistent
throughout the working space, able to ensure no condensation in the test chamber, and are repeatable.
The apparatus shall enable the use, singly or in mixtures, of polluting gas(es) such as SO , H S, Cl and NO
2 2 2 2
up to at least the concentration required, for each gas, by the test method.
The important parameters are
a) the materials used for the test chamber and the gas handling system,
b) the geometry of the test chamber,
c) the rate and pattern of the gas flow,
d) the homogeneity of gas mixing,
e) the incident illumination (see A.1.6)
The apparatus shall be constructed according to Annex A and shall meet its requirements.
A typical apparatus for polluting-gas corrosion tests is also shown in Annex B.
5 Test methods
5.1 Test severity
5.1.1 General
The test severity, to be given in the relevant specification, is defined by
⎯ the type, concentration and flow rate of polluting gas,
⎯ the temperature,
⎯ the relative humidity, and
⎯ the test duration.
2 © ISO 2006 – All rights reserved

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ISO 10062:2006(E)
5.1.2 Suggested test methods
The method to be used depends upon the purposes of the test, the nature of the metals and alloys and the
type of protection to be tested.
⎯ Method A
−6
Polluting gas SO at a volume fraction of (0,5 ± 0,1) ×10
2
Temperature and relative humidity (40 ± 1) °C and (80 ± 5) % RH
or (25 ± 1) °C and (75 ± 3) % RH
The condition of (40 ± 1) °C and (80 ± 5) % is more aggressive than the condition of (25 ± 1) °C and
(75 ± 3) % RH. Either of them shall be optionally selected and be stated in the test report.
⎯ Method B
−6
Polluting gas H S at a volume fraction of (0,10 ± 0,02) ×10
2
Temperature and relative humidity (40 ± 1) °C and (80 ± 5) % RH
or (25 ± 1) °C and (75 ± 3) % RH
The condition of (40 ± 1) °C and (80 ± 5) % RH is more aggressive than the condition of (25 ± 1) °C and
(75 ± 3) % RH. Either of them shall be optionally selected and be stated in the test report.
⎯ Method C
−6
Polluting gas Cl at a volume fraction of (0,02 ± 0,005) ×10
2
Temperature and relative humidity (40 ± 1) °C and (80 ± 5) % RH
or (25 ± 1) °C and (75 ± 3) % RH
The condition of (40 ± 1) °C and (80 ± 5) % RH is more aggressive than the condition of (25 ± 1) °C and
(75 ± 3) % RH. Either of them shall be optionally selected and be stated in the test report.
⎯ Method D
−6
Mixtu
...