SIST EN ISO 2064:2000

SLOVENSKI STANDARD
SIST EN ISO 2064:2000
01-december-2000
Kovinske in druge anorganske prevleke - Definicije in pravila v zvezi z meritvami
debeline (ISO 2064:1996)
Metallic and other inorganic coatings - Definitions and conventions concerning the
measurement of thickness (ISO 2064:1996)
Metallische und andere anorganische Schichten - Definitionen und Festlegungen, die die
Messung der Schichtdicke betreffen (ISO 2064:1980)
Revetements métalliques et autres revetements non organiques - Définitions et principes
concernant le mesurage de l'épaisseur (ISO 2064:1980)
Ta slovenski standard je istoveten z: EN ISO 2064:2000
ICS:
25.220.40 Kovinske prevleke Metallic coatings
SIST EN ISO 2064:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 2064:2000
IS0 2064: 1996(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work of
preparing International Standards is normally carried out through IS0
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. IS0 collab-
orates closely with the International Electrotechnical Commission (IEC) on
all matters of electrotechnical standardization.
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.
International Standard IS0 2064 was prepared by Technical Committee
ISOnC 107, Metallic and other inorganic coatings, Subcommittee SC 2,
Methods of inspection and coordination of test methods.
This third edition cancels and replaces the second edition (IS0 2064:1980),
of which it constitutes a technical revision.
0 IS0 1996
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 the publisher.
International Organization for Standardization
Case postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii

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SIST EN ISO 2064:2000
0 IS0 IS0 2064: 1996(E)
Introduction
An important requirement of most coating specifications is that the coating
have a thickness not less than a given value (and in a few cases not greater
than a given value). The method to be used for measuring the thickness of
a particular coating is laid down in the coating specification.
The main purpose of this International Standard is to define exactly what is
meant by the term “minimum thickness” when used in specifications for
metallic and related coatings. In this context, the minimum thickness is de-
fined as a local thickness over a small area.
With some methods, for example the microscopical method, IS0 1463, it is
possible to detect appreciable variations in thickness across extremely
small areas (for example pits or cracks) which might be considered as
places where the specified minimum thickness has not been achieved.
However, with other test methods (for example the coulometric method,
IS0 2177:1985, Metallic coatings - Measurement of coating thickness -
Coulometric method by anodic dissolution, or various non-destructive
methods), such minute local variations in thickness cannot be detected.
Therefore, the only practicable definition of minimum thickness is one that
allows comparable results to be obtained by any of the approved test
methods. Hence the minimum thickness should be a local thickness over
but not too small to accommodate
an area that is as small as practicable,
any of the specified test methods. These areas are termed “reference
areas” and are often large enough to accommodate a number of separate
measurements by the chosen method. In order to obtain consistent results,
especially with non-destructive tests, the mean of the measurements of
such tests on the reference area should be taken as the local thickness.
In practice, it is usually permissible to test the coating at any place on the
significant surface in order to find the minimum thickness on an article.
Articles are usually tested at areas where the coating may be expected to
be thinnest and so the definition of minimum thickness is the lowest value
of local thickness (as defined in clause 3) found by the chosen method.
In the case of some coatings, such as hot-dipped and sprayed metal coat-
ings, the coating specifications may call for compliance with a minimum lo-
cal or an average thickness, or both. These may differ from the parameters
defined in this International Standard and the relevant product specifi-
cations should be consulted.

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SIST EN ISO 2064:2000
INTERNATIONAL STANDARD o IS0 IS0 2064: 1996(E)
Metallic and other inorganic coatings - Definitions and
conventions concerning the measurement of thickness
for analytical methods, the area over which the
1 Scope a)
coating is removed;
This
...