SIST EN ISO 11997-1:2017

SLOVENSKI STANDARD
01-december-2017
1DGRPHãþD
SIST EN ISO 11997-1:2006
%DUYHLQODNL8JRWDYOMDQMHRGSRUQRVWLSURWLFLNOLþQLPNRUR]LMVNLPSRJRMHPGHO
0RNURVODQDPHJODVXKRYODåQR,62
Paints and varnishes - Determination of resistance to cyclic corrosion conditions - Part 1:
Wet (salt fog)/dry/humid (ISO 11997-1:2017)
Beschichtungsstoffe - Bestimmung der Beständigkeit bei zyklischen
Korrosionsbedingungen - Teil 1: Nass (Salzsprühnebel)/trocken/Feuchte (ISO 11997-
1:2017)
Peintures et vernis - Détermination de la résistance aux conditions de corrosion cyclique
- Partie 1: Brouillard salin/sécheresse/humidité (ISO 11997-1:2017)
Ta slovenski standard je istoveten z: EN ISO 11997-1:2017
ICS:
87.040 Barve in laki Paints and varnishes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 11997-1
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2017
EUROPÄISCHE NORM
ICS 87.040 Supersedes EN ISO 11997-1:2006
English Version
Paints and varnishes - Determination of resistance to
cyclic corrosion conditions - Part 1: Wet (salt
fog)/dry/humid (ISO 11997-1:2017)
Peintures et vernis - Détermination de la résistance Beschichtungsstoffe - Bestimmung der Beständigkeit
aux conditions de corrosion cyclique - Partie 1: bei zyklischen Korrosionsbedingungen - Teil 1: Nass
Brouillard salin/sécheresse/humidité (ISO 11997- (Salzsprühnebel)/trocken/Feuchte (ISO 11997-
1:2017) 1:2017)
This European Standard was approved by CEN on 12 July 2017.

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: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11997-1:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 11997-1:2017) has been prepared by Technical Committee ISO/TC 35 “Paints
and varnishes” in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the
secretariat of which is held by DIN.
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 March 2018, and conflicting national standards shall
be withdrawn at the latest by March 2018.
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 11997-1:2006.
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 11997-1:2017 has been approved by CEN as EN ISO 11997-1:2017 without any
modification.
INTERNATIONAL ISO
STANDARD 11997-1
Third edition
2017-08
Paints and varnishes — Determination
of resistance to cyclic corrosion
conditions —
Part 1:
Wet (salt fog)/dry/humid
Peintures et vernis — Détermination de la résistance aux conditions
de corrosion cyclique —
Partie 1: Brouillard salin/sécheresse/humidité
Reference number
ISO 11997-1:2017(E)
©
ISO 2017
ISO 11997-1:2017(E)
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved

ISO 11997-1:2017(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Principle . 2
5 Salt fog test solution . 2
6 Apparatus . 2
7 Sampling . 4
8 Test panels . 4
8.1 Material and dimensions . 4
8.2 Preparation and coating of panels . 4
8.3 Drying and conditioning . 4
8.4 Thickness of coating . 4
8.5 Preparation of scribe . 4
9 Method of exposure of test panels . 5
10 Operating conditions . 5
11 Procedure. 5
12 Examination of test panels . 5
13 Precision . 6
14 Test report . 6
Annex A (normative) Cycle A . 8
Annex B (normative) Cycle B . 9
Annex C (normative) Cycle C .10
Annex D (normative) Cycle D .12
Annex E (informative) Factors to be considered in the design and construction of salt
spray cabinets .13
Bibliography .14
ISO 11997-1:2017(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 on 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 the following
URL: w w w . i s o .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee
SC 9, General test methods for paints and varnishes.
This third edition cancels and replaces the second edition (ISO 11997-1:2005), which has been
technically revised.
The main changes compared to the previous edition are as follows:
— the time for no drops of moisture are visible on the panels (see 6.4) has been changed;
— a reference to ISO 4628-8 for assessment of degree of delamination and corrosion around a scribe
or other artificial defect has been added;
— a reference to ISO 4620-10 for assessment of degree of filiform corrosion has been added;
— the supplementary test conditions previously in Annex A have been integrated in the test report;
— the numbering and order of annexes has been changed;
— the adjustment procedure for the pH of the salt solution in Annex A to Annex D has been implemented
from ISO 9227;
— the text has been harmonized with the latest edition of ISO 9227 where possible.
A list of all parts in the ISO 11997 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved

ISO 11997-1:2017(E)
Introduction
Coatings of paints, varnishes and similar materials are exposed to one of four cycles of wet and dry
conditions specified in this document (see Annex A to Annex D), using specified salt solutions in a
cabinet in order to simulate, in the laboratory, processes occurring in aggressive outdoor conditions,
such as marine environments. Generally, correlation between such outdoor weathering and laboratory
testing cannot be expected because of the large number of factors influencing the breakdown process.
Correlation can only be expected if the effect on the coating of important parameters (e.g. the nature of
the pollutant, the spectral distribution of the incident irradiance in the relevant photochemical region,
the temperature of the specimen, the type and cycle of wetting and relative humidity) is known. In
contrast to outdoor weathering, laboratory testing in a cabinet is performed with a reduced number
of variables which can be controlled, and therefore the effects are more reproducible. The method
described may also give a means of checking that the quality of a paint or paint system is being
maintained.
The method has been found to be useful in comparing the cyclic salt spray resistance of different
coatings. It is most useful in providing relevant ratings for a series of coated panels exhibiting significant
differences in cyclic salt spray resistance.
The test cycles included in this document have been used successfully, with documented evidence, in
the industry for the assessment of performance. The cycles can be summarized as follows.
— Cycle A (see Annex A): This cycle is specified in Japanese Automobile Standards JASO M 609-91 and
JASO M610-92.
— Cycle B (see Annex B): This is based on the VDA 621-415 cycle and is widely used in Europe. It
has also been shown to give good correlation with natural weathering for thermosetting paints in
vehicle corrosion.
— Cycle C (see Annex C): This cycle was developed in the UK for use with water-soluble and latex
paint systems and has been shown to give good correlation with natural weathering.
— Cycle D (see Annex D): This cycle is specified in Japanese Standard JIS K 5621-2003.
It is intended that other cycles will be added at later revisions of this document, as they are developed
for evaluating other paint types.
ISO 11997-2 describes a method for determining the cyclic corrosion resistance of paints which includes
UV exposure as part of the cycle. It has been found to give good correlation with natural weathering for
industrial maintenance coatings.
INTERNATIONAL STANDARD ISO 11997-1:2017(E)
Paints and varnishes — Determination of resistance to
cyclic corrosion conditions —
Part 1:
Wet (salt fog)/dry/humid
1 Scope
This document specifies a method for the determination of the resistance of coatings to one of four
defined cycles of wet (salt fog)/dry/humid conditions using specified solutions.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1513, Paints and varnishes — Examination and preparation of test samples
ISO 1514, Paints and varnishes — Standard panels for testing
ISO 2808, Paints and varnishes — Determination of film thickness
ISO 3270, Paints and varnishes and their raw materials — Temperatures and humidities for conditioning
and testing
ISO 3696, Water for analytical laboratory use — Specification and test methods
ISO 4628-1, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity
and size of defects, and of intensity of uniform changes in appearance — Part 1: General introduction and
designation system
ISO 4628-2, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity
and size of defects, and of intensity of uniform changes in appearance — Part 2: Assessment of degree of
blistering
ISO 4628-3, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and
size of defects, and of intensity of uniform changes in appearance — Part 3: Assessment of degree of rusting
ISO 4628-4, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity
and size of defects, and of intensity of uniform changes in appearance — Part 4: Assessment of degree of
cracking
ISO 4628-5, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and
size of defects, and of intensity of uniform changes in appearance — Part 5: Assessment of degree of flaking
ISO 4628-8, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity
and size of defects, and of intensity of uniform changes in appearance — Part 8: Assessment of degree of
delamination and corrosion around a scribe or other artificial defect
ISO 4628-10, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity
and size of defects, and of intensity of uniform changes in appearance — Part 10: Assessment of degree of
filiform corrosion
ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling
ISO 11997-1:2017(E)
ISO 17872:2007, Paints and varnishes — Guidelines for the introduction of scribe marks through coatings
on metallic panels for corrosion testing
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:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
4 Principle
A coated test panel is exposed to a cyclic wet (salt fog), drying and humidity test schedule and the
effects of exposure are evaluated by criteria agreed in advance between the interested parties, these
criteria usually being of a subjective nature.
5 Salt fog test solution
Prepare the salt fog test solution by dissolving the salt or salts as given in Annexes A, B, C and D in
water conforming to at least grade 2 of ISO 3696 to produce the required concentration.
The salts shall be of analytical grade and contain a mass fraction of the heavy metals of copper (Cu),
nickel (Ni) and lead (Pb) in total less than 0,005 %. It shall not contain a mass fraction of sodium iodide
more than 0,1 % and a mass fraction of total impurities more than 0,5 % calculated for dry salt.
NOTE 1 Sodium chloride with anti-caking agents can act as corrosion inhibitors or accelerators. A useful
sodium chloride salt grade is a grade named Ph. Eur/USP or JIS, ACS.
If the pH of the solution is outside the required range (see Annexes A, B, C and D), the presence of
undesirable impurities in the salt or the water or both shall be investigated. Check the pH using
electrometric measurement. Measurements of pH shall be done using electrodes suitable for measuring
in weakly buffered sodium chloride solutions in deionized water. Any necessary corrections shall be
made by adding hydrochloric acid, sodium hydrogen carbonate or analytical-grade sodium hydroxide,
of appropriate concentrations.
NOTE 2 Attention is drawn to the possible changes in pH resulting from loss of carbon dioxide from the
solution when it is sprayed or from dissolution of carbon dioxide from the ambient atmosphere. Such changes
can be avoided by reducing the carbon dioxide content of the solution by, for example, heating it to a temperature
above 35 °C before it is placed in the cabinet or making the solution from freshly boiled water.
Filter the solution before placing it in the reservoir of the cabinet in order to remove any solid matter
which might block the apertures of the spraying device.
6 Apparatus
Ordinary laboratory apparatus and glassware, together with the following.
6.1 Spray cabinet, made of, or lined with, material resistant to corrosion by the sprayed solution and
having a roof which prevents condensed moisture dripping onto the test specimens. Due to the limited
capacity of cabinets smaller than 0,4 m , the effect of the loading of the cabinet on the distribution of the
2 © ISO 2017 – All rights reserved

ISO 11997-1:2017(E)
spray and temperature shall be carefully considered. The solution shall not be sprayed directly onto test
specimens but rather spread throughout the cabinet so that it falls naturally down on them.
The size and shape of the cabinet shall be such that the salt fog deposition rate is within the limits given
in Annexes A, B, C and D.
NOTE Cabinets with a volume greater than 2 m will be difficult to operate unless careful consideration is
given to their design and construction.
Factors to be taken into consideration in the design and construction of the cabinet are given in Annex E.
...