EN ISO 11844-2:2020
(Main)Corrosion of metals and alloys - Classification of low corrosivity of indoor atmospheres - Part 2: Determination of corrosion attack in indoor atmospheres (ISO 11844-2:2020)
Corrosion of metals and alloys - Classification of low corrosivity of indoor atmospheres - Part 2: Determination of corrosion attack in indoor atmospheres (ISO 11844-2:2020)
This document specifies methods for determining corrosion rates with standard specimens of metals in indoor atmospheres with low corrosivity. For this direct method of evaluation corrosivity, different sensitive methods can be applied using standard specimens of the following metals: copper, silver, zinc, steel and lead. The values obtained from the measurements are used as classification criteria for the determination of indoor atmospheric corrosivity.
Korrosion von Metallen und Legierungen - Einteilung der Korrosivität von Atmosphären in Innenräumen mit geringer Korrosivität - Teil 2: Bestimmung des Korrosionsangriffs in Innenräumen (ISO 11844-2:2020)
Dieses Dokument legt Verfahren zur Bestimmung von Korrosionsgeschwindigkeiten an Metall-Standard¬proben in Innenräumen mit geringer Korrosivität fest. Für diese direkte Bewertung der Korrosivität können Methoden mit unterschiedlicher Empfindlichkeit angewendet werden, bei denen metallene Standardproben aus Kupfer, Silber, Zink, Stahl und Blei verwendet werden. Die bei den Messungen bestimmten Werte werden als Einteilungskriterien zur Bestimmung der atmosphärischen Korrosivität in Innenräumen ange¬wendet.
Corrosion des métaux et alliages - Classification de la corrosivité faible des atmosphères d'intérieur - Partie 2: Détermination de l'attaque par corrosion dans les atmosphères d'intérieur (ISO 11844-2:2020)
Le présent document spécifie des méthodes de détermination de la vitesse de corrosion avec des éprouvettes normalisées de métaux dans des atmosphères d'intérieur à faible corrosivité. Pour cette évaluation directe de la corrosivité, différentes méthodes sensibles peuvent être appliquées à des éprouvettes normalisées des métaux suivants: cuivre, argent, zinc, acier et plomb. Les valeurs obtenues par mesurage servent de critères de classification pour la détermination de la corrosivité des atmosphères d'intérieur.
Korozija kovin in zlitin - Klasifikacija notranjih atmosfer z nizko korozivnostjo - 2. del: Ugotavljanje napada korozije v zaprtih prostorih (ISO 11844-2:2020)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2020
Nadomešča:
SIST EN ISO 11844-2:2008
Korozija kovin in zlitin - Klasifikacija notranjih atmosfer z nizko korozivnostjo - 2.
del: Ugotavljanje napada korozije v zaprtih prostorih (ISO 11844-2:2020)
Corrosion of metals and alloys - Classification of low corrosivity of indoor atmospheres -
Part 2: Determination of corrosion attack in indoor atmospheres (ISO 11844-2:2020)
Korrosion von Metallen und Legierungen - Einteilung der Korrosivität in Räumen mit
geringer Korrosivität - Teil 2: Bestimmung der korrosiven Belastung in Räumen (ISO
11844-2:2020)
Corrosion des métaux et alliages - Classification de la corrosivité faible des atmosphères
d'intérieur - Partie 2: Détermination de l'attaque par corrosion dans les atmosphères
d'intérieur (ISO 11844-2:2020)
Ta slovenski standard je istoveten z: EN ISO 11844-2:2020
ICS:
77.060 Korozija kovin Corrosion of metals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 11844-2
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2020
EUROPÄISCHE NORM
ICS 77.060 Supersedes EN ISO 11844-2:2008
English Version
Corrosion of metals and alloys - Classification of low
corrosivity of indoor atmospheres - Part 2: Determination
of corrosion attack in indoor atmospheres (ISO 11844-
2:2020)
Corrosion des métaux et alliages - Classification de la Korrosion von Metallen und Legierungen - Einteilung
corrosivité faible des atmosphères d'intérieur - Partie der Korrosivität in Räumen mit geringer Korrosivität -
2: Détermination de l'attaque par corrosion dans les Teil 2: Bestimmung der korrosiven Belastung in
atmosphères d'intérieur (ISO 11844-2:2020) Räumen (ISO 11844-2:2020)
This European Standard was approved by CEN on 26 April 2020.
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, Republic of North Macedonia, 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11844-2:2020 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 11844-2:2020) 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, including for corrosion protection and corrosion testing of metals and alloys”
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 December 2020, and conflicting national standards
shall be withdrawn at the latest by December 2020.
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 11844-2:2008.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 11844-2:2020 has been approved by CEN as EN ISO 11844-2:2020 without any
modification.
INTERNATIONAL ISO
STANDARD 11844-2
Second edition
2020-05
Corrosion of metals and alloys —
Classification of low corrosivity of
indoor atmospheres —
Part 2:
Determination of corrosion attack in
indoor atmospheres
Corrosion des métaux et alliages — Classification de la corrosivité
faible des atmosphères d'intérieur —
Partie 2: Détermination de l'attaque par corrosion dans les
atmosphères d'intérieur
Reference number
ISO 11844-2:2020(E)
©
ISO 2020
ISO 11844-2:2020(E)
© ISO 2020
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
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Published in Switzerland
ii © ISO 2020 – All rights reserved
ISO 11844-2:2020(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Methods . 1
Annex A (informative) Determination of corrosion rate by mass change measurement .4
Annex B (informative) Determination of corrosion rate by electrolytic cathodic reduction .8
Annex C (informative) Determination of corrosion rate by resistance measurements .10
Annex D (informative) Determination of corrosion rate by quartz crystal micro-balance
methodology .12
Bibliography .15
ISO 11844-2:2020(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 of 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 www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 156, Corrosion of metals and alloys, in
collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/
TC 262, Metallic and other inorganic coatings, including for corrosion protection and corrosion testing of
metals and alloys, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 11844-2:2005), which has been
technically revised. The main changes compared with the previous edition are as follows:
— lead has been included as a standard specimen with high sensitivity to vapour organic acids;
— Annex D has been added.
A list of all parts in the ISO 11844 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
ISO 11844-2:2020(E)
Introduction
This document describes standard specimens, exposure and evaluation for the derivation of indoor
corrosivity categories.
The determination of the corrosion attack is, at the present state of knowledge, the most reliable
and, usually, also an economical way for evaluating corrosivity, taking into account all the main local
environmental influences.
INTERNATIONAL STANDARD ISO 11844-2:2020(E)
Corrosion of metals and alloys — Classification of low
corrosivity of indoor atmospheres —
Part 2:
Determination of corrosion attack in indoor atmospheres
1 Scope
This document specifies methods for determining corrosion rates with standard specimens of metals
in indoor atmospheres with low corrosivity. For this direct method of evaluation corrosivity, different
sensitive methods can be applied using standard specimens of the following metals: copper, silver, zinc,
steel and lead. The values obtained from the measurements are used as classification criteria for the
determination of indoor atmospheric corrosivity.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4 Principle
The corrosivity of the indoor location (e.g. control rooms, electric boxes, storage rooms, during
transportation, in museums) is determined from the corrosion rate calculated from the mass change
or resistance change per unit area of standard specimens of metals after exposure for a certain time
period. Different materials are sensitive to different environmental parameters or their combinations.
5 Methods
The following methods, described in Annexes A and B, are available for the evaluation of the
corrosion attack:
— determination of corrosion rate by mass change measurements (see Annex A);
— determination of corrosion rate by electrolytic cathodic reduction (see Annex B).
The methods described in Annexes C and D are suitable for continuous or periodic monitoring of the
corrosion attack:
— determi
...
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