EN ISO 2808:1999
(Main)Paints and varnishes - Determination of film thickness (ISO 2808:1997)
Paints and varnishes - Determination of film thickness (ISO 2808:1997)
Migrated from Progress Sheet (TC Comment) (2000-07-10): BT C 9/1996 approved VA/ISO, but too late (PQ or UAP on revised ISO 2808 when ++ available).
Beschichtungsstoffe - Bestimmung der Schichtdicke (ISO 2808:1997)
Diese Internationale Norm behandelt und legt eine Anzahl von Verfahren für die Messung der Dicke von organischen Beschichtungen, welche auf ein Substrat aufgetragen wurden, fest. Diese Internationale Norm gilt nicht für metallische Überzüge. Einige der beschriebenen Verfahren können auch für die Messung der Dicke von abgelösten Beschichtungen angepaßt werden. Die Prinzipien der Verfahren, ihre besonderen Anwendungsbereiche und die erwartete Präzision werden in Tabelle 1 angegeben. Diese Internationale Norm definiert auch Begriffe, welche die Bestimmung der Schichtdicke betreffen.
Peintures et vernis - Détermination de l'épaisseur du feuil (ISO 2808:1997)
L'IEC 61837-4:2015 spécifie les dessins d'encombrement et les connexions des sorties pour les dispositifs piézoélectriques à montage en surface avec les encombrements d'enveloppes hybrides, et est fondée sur l'IEC 61240:2012, qui a normalisé les règles de tracé des dessins d'encombrement des dispositifs à montage en surface. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- Le dessin d'encombrement est défini comme un ensemble de dessins composé de quatre vues, à savoir la vue de dessus, la vue de face, la vue de droite et la vue de dessous, à la place de l'ensemble des trois vues prévu dans la version précédente.
- Les configurations des enveloppes ont été révisées comme indiqué au Tableau 1.
Cette publication doit être lue conjointement avec la CEI 61240:2012.
Barve in laki - Ugotavljanje debeline plasti (ISO 2808:1997)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-1999
Barve in laki - Ugotavljanje debeline plasti (ISO 2808:1997)
Paints and varnishes - Determination of film thickness (ISO 2808:1997)
Beschichtungsstoffe - Bestimmung der Schichtdicke (ISO 2808:1997)
Peintures et vernis - Détermination de l'épaisseur du feuil (ISO 2808:1997)
Ta slovenski standard je istoveten z: EN ISO 2808:1999
ICS:
87.040 Barve in laki Paints and varnishes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
Is0
INTERNATIONAL
STANDARD
Third edition
1997-09-l 5
Paints and varnishes - Determination
of film thickness
Dbtermination de I’hpaisseur du feuil
Peintures et vernis -
Reference number
IS0 2808: 1997(E)
IS0 2808:1997(E) .
Contents
Scope
Normative references
Required supplementary information
Definitions
General requirements
Method No 1 - Determination of wet-film thickness
Method No 2 - Determination of dry-film thickness by calculation
from film mass per unit area
Method No 3 - Measurement of dry-film thickness by mechanically
contacting methods
Measurement of dry-film thickness by the profilometer method
Method No 4 -
microscope methods
10 Method No 5 - Measurement of dry-film thickness using
- Magnetic method 29
11 Method No 6
12 Method No 7 - Eddy current method
8 - Non-contact methods 31
13 Method No
14 Method No 9 - Gravimetric method (dissolving method)
15 Method No 10 - Determination of dry-film thickness on blast-cleaned steel
substrates
16 Test report
Annexes
A Method No 2 - Procedure
0 IS0 1997
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
microfiim, without permission in writing from the publisher.
lnternational Organization for Standardization
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Printed in Switzerland
ii
IS0 2808:1997(E)
@ IS0
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 collaborates 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 2808 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 (IS0 2808: 1991) of which it
constitutes a technical revision.
The main technical changes are:
a) Addition of the following methods of film thickness determination:
1) Gravimetric (dissolving) method (Method 9)
2) Determination of dry-film thickness on blast-cleaned steel substrates (Method 10).
b) Table 1 includes typical instrument bias and precision for each method.
Annex A forms an integral part of this International Standard.
. . .
III
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INTERNATIONAL STANDARD @ IS0 IS0 2808:1997(E)
Paints and varnishes - Determination of film thickness
1 Scope
This International Standard reviews and specifies a number of methods that are applicable to
the measurement of the thickness of organic coatings applied to a substrate. It does not apply
to metallic coatings. Some of the techniques described can be adapted for the measurement of
the thickness of detached coatings. The principles of the methods, their particular field of
application and the expected precision are given in table 1.
This International Standard also defines terms concerning the determination of film thickness.
.G
Table 1 - Methods of film thickness measurement
N
$
Note 1: Many of the methods referred to below may be adapted for use with detached films.
=;
co
Typical instrument bias 1) and Remarks (0
Techniques and applications
Number and description
precision
m
---II
Measurements give an
A Comb gauge
Method No. 1
approximate indication of the
thickness of the wet film.
Bias: * 2,5 % + 1 pm May be used in laboratories and
B Wheel gauge
Assessment of wet-film thickness
on site.
Method 1C may also be used for
Reproducibility: k 15 pm
C By weighing
determining the dry-film
For measurement of wet-film
thickness, but in the laboratory
thickness of freshly painted
only.
surfaces.
Determinations are not precise Provides a check that the mean
For use on films too soft to be
Method No. 2
thickness lies between specified
measured by methods which use
limits. The fi m remains
a presser foot or probe.
Determination of dry-film
undamaged.
thickness by calculation from the
ratio of dry-film mass to dry-film
area
Method No. 3
A Micrometer method. For use Bias: k 2 pm The film has to be hard enough to
Measurement of dry-film on test panels or painted surfaces Reproducibility: k 30 % for low resist indentation on closing the
thickness by mechanically that are substantially plane. and 20 o/s for higher film micrometer jaws. The film is
contacting instruments damaged in the test. The film
thicknesses
thickness shall be greater than
25 pm unless the film is
detached.
B Dial gauge method Reproducibility: * 10 %, with a The film has to be hard enough to
Test panels or painted surfaces lower limit of 2 pm resist indentation on lowering the
that are substantially plane or gauge or electric-device presser
have a curvature in one direction foot.
Method No. 4
Recommended as a referee Reproducibility: k 10 %, with a The film has to be hard enough to
Measurement of dry-film method for painted surfaces that
lower limit of 2 pm resist indentation by the
thickness by the profilometric are substantially plane. profile-tracing stylus.
method The film is damaged in the test.
m
Method No. 5
A portion of the painted article is
Bias: 2 pm
A Microscopic examination of
cut out and mounted in resin.
Measurement of dry-film cross-section.
Reproducibility: * 10 % The film is damaged in the test.
Recommended as a referee
thickness by microscope methods
method for films on substrates of
varying profile, for example
grit-blasted surfaces.
A special cutting tool or paint
B Wedge cut method. Reproducibility: zfi 10 %, with a
borer is required to cut through
Not applicable to brittle or friable lower limit of 2 pm
the film.
films.
The film is damaged in the test.
Both A and B can be used for
thicknesses of individual coats in
a paint system
A special microscope is used to
C Surface profile measuring Reproducibility: * 10 %
method. Applies to transparent examine the profile of the film
(split-beam microscope).
films and to films which can be
cleanly removed from the Only transparent films remain
undamaged.
substrate.
@ IS0
ISO2808:1997(E)
Instruments operate on the
Used when contact by the
Method No. 8
beta-particle back-scatter
measuring instrument with the
principle (method No. 8A) or the
Non-contact methods coating needs to be avoided.
X-ray fluorescence principle
Applicable to painted surfaces
Reproducibility: k 10 % (method No. 8B).
which are substantially flat.
Paint films have to be
homogeneous for measurements
to be accurate.
The coating mass is determined
Method No. 9 Applicable to films on substrates
of varying profiles, for example by dissolving the coating without
Gravimetric (dissolving) method dissolving the substrate. The
grit-blasted steel panels, and to
mass of coating divided by the
films on polymeric substrates if
the substrate is not affected by density and the area of the
the paint solvent. coating gives the average coating
thickness.
Method No. 10 For dry coatings on magnetic Instruments operate on the
metallic substrates having a magnetic-induction principle.
rough (blast-cleaned) surface.
Determination of dry-film May be used on site.
thickness on blast-cleaned steel In some cases, method No. 5A or
substrates
method No. 9 may also be used.
1) The bias data are based on
information supplied by the
instrument manufacturers
IS0 2808: 1997(E)
2 Normative References
The following standards contain provisions which, through reference in this text, constitute
provisions of this International Standard. At the time of publication, the editions indicated
were valid. Ail standards are subject to revision, and parties to agreements based on this
International Standard are encouraged to investigate the possibility of applying the most
recent editions of the standards listed below. Members of IEC and IS0 maintain registers of
currently valid International Standards.
IS0 1463 : 1982, Metallic and oxide coatings - Measurement of coating thickness -
Microscopical method
IS0 15 14: 1993, Paints and varnishes - Standard panels for testing
IS0 2 178: 1982, Non-magnetic coatings on magnetic substrates - Measurement of coating
thickness - Magnetic method
IS0 2360: 1982, Non -conductive coatings on non-magnetic basis metals - Measurement of
coating thickness - Eddy current method
IS0 28 11: 1997, Paints and varnishes - Determination of density -
Part 1: Pyknometer method
Part 2: Immersed body (plummet) method
Part 3: Oscillation method
Part 4: Pressure cup method
IS0 3233: 1984,‘) Paints and varnishes - Determination of volume of dry coating (non-volatile
matters) obtained from a given volume of liquid coating.
IS0 3497: 1990, Metallic coatings - Measurement of coating thickness - X-ray spectrometric
methods
IS0 3543 : 198 1, Metallic and non-metallic coatings - Measurement of thickness - Beta
backscatter method
IS0 45 18: 1980, Metallic.coatings - Measurement of coating thickness - Profilometric
method
IS0 7254: 1984, Paints and varnishes - Assessment of natural spreading rate - Brush
application
IS0 8503-l : 1988, Preparation of steel substrates before application of paints and related
products - Surface roughness characteristics of blast-cleaned steel substrates - Part 1:
Specifications and definitions for IS0 surface profile comparators for the assessment of
abrasive blast-cleaned surfaces.
1) Under revision.
@ IS0
IS0 2808:1997(E)
3 Required supplementary information
The methods of measurement specified require to be completed, for any particular
application, by the following supplementary information.
This information should be derived from the International Standard or national standard or
other document for the product under test or, if appropriate, may be the subject of agreement
between the interested parties.
a) The method of application of the coating to the substrate and whether it is a single
coating or a multi-coat system.
b) The duration and conditions of drying (or stoving) and ageing (if applicable) of the
coating before measurement.
c) The method of film thickness measurement to be used (see table 1).
d) The significant area ( see 4.2) of the coated article and, if necessary, the number of
measurements.
4 Definitions
For the purpose of this International Standard, the following definitions apply:
4.1 film thickness: The thickness of a coating applied to a substrate is the distance between
the surface of the film and the surface of the substrate.
NOTE 1 - The value of a film thickness depends, to some extent, on the method of
measurement used. To give a correct value would only be possible if the coating and
substrate had flat and even surfaces. In practice, neither the surface of the coating nor the
surface of the substrates is even. In many cases, the surface irregularities exceed 10% of
the film thickness. The results of the measurements by different methods are influenced by
these irregularities. The influence is different for each method. Therefore, the results of
different methods applied to the same specimen may differ markedly. This is the reason
why the results of film thickness measurements always have to be reported together with
information on the method of measurement and which type of instrument was used, plus
the bias of the instrument, if known.
4.2 significant surface area: That part of an article covered or to be covered by the coating
and for which the coating is essential for serviceability and/or appearance.
4.3 reference area: That part of the significant surface area within which a specified number
of single measurements are required to be made.
IS0 2808: 1997(E)
4.4 measurement area: The area over which a single measurement is made.
In this International Standard the measurement area (test area) is specified as follows:
a) for analytical (dissolution) methods, the area over which the coating is removed; i
b) for microscopical methods, the point at which a single measurement is made;
c) for non-destructive methods, the probe area or the area influencing the reading.
4.5 local film thickness: The mean of the specified number of thickness measurements made
within a given reference area,
4.6 minimum local film thickness: The lowest value of the local thicknesses found on the
significant surface area of a particular article.
4.7 maximum local thickness: The highest value of the local thicknesses found on the’
significant surface area of a particular article.
4.8 mean film thickness: The mean value of a specified number of local thickness
measurements that are evenly distributed over a significant surface area, or the result of a
gravimetric film thickness dete
...
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