SIST EN ISO 11403-3:2002

Plastics - Acquisition and presentation of comparable multipoint data - Part 3: Environmental influences on properties (ISO 11403-3:1999)

Kunststoffe - Ermittlung und Darstellung vergleichbarer Vielpunkt-Kennwerte - Teil 3: Umgebungseinflüsse auf Eigenschaften (ISO 11403-3:1999)

Dieser Teil von ISO 11403 legt Prüfverfahren fest für die Ermittlung und Darstellung von Vielpunkt-Kennwerten, die das Verhalten von Kunststoffen gegenüber den folgenden Umgebungseinflüssen darstellen:
3 langanhaltende Wärmeeinwirkung,
3 flüssige Medien,
3 umgebungsbedingte Spannungsrissbildung unter konstanter Zugbeanspruchung,
3 künstliche Bewitterung.
Die Prüfungen sind in der Reihenfolge zunehmender Schärfe aufgeführt. Durch Prüfung bei weniger scharfen Umgebungseinflüssen ist es möglich zu entscheiden, ob Prüfungen unter schärferen Bedingungen sinnvoll sind.

Plastiques - Acquisition et présentation de données multiples comparables - Partie 3: Effets induits par l'environnement sur les propriétés (ISO 11403-3:1999)

La présente partie de l'ISO 11403 prescrit les modes opératoires d'essai en vue de l'acquisition et de la présentation de données multiples qui démontrent le comportement des plastiques dans les environnements suivants: - exposition prolongée à la chaleur; - produits chimiques liquides; - fissuration dans un environnement donné sous contrainte de traction constante; - vieillissement artificiel. Les essais sont indiqués par ordre de sévérité croissante de l'effet de l'environnement. Commencer par les environnements les moins sévères permet de juger en toute connaissance de cause s'il vaut la peine d'effectuer des essais dans des conditions plus sévères.

Polimerni materiali - Pridobitev in predstavitev primerljivih značilnih enotočkovnih podatkov - 3. del: Vplivi okolja na lastnosti (ISO 11403-3:1999)

General Information

• Status: Withdrawn
• Publication Date: 31-Jan-2002
• Withdrawal Date: 29-Jun-2014
• ICS: 83.080.01 - Plastics in general
• Technical Committee: IPMA - Polimer materials and products
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 19-Jun-2014
• Due Date: 12-Jul-2014
• Completion Date: 30-Jun-2014
• Ref Project: EN ISO 11403-3:2001 - Plastics - Acquisition and presentation of comparable multipoint data - Part 3: Environmental influences on properties (ISO 11403-3:1999)

Relations

• Replaced By: SIST EN ISO 11403-3:2014 - Plastics - Acquisition and presentation of comparable multipoint data - Part 3: Environmental influences on properties (ISO 11403-3:2014)
• Effective Date: 08-Jun-2022
• Replaced By: SIST EN ISO 11403-3:2014 - Plastics - Acquisition and presentation of comparable multipoint data - Part 3: Environmental influences on properties (ISO 11403-3:2014)
• Effective Date: 01-Sep-2014

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 11403-3:2002
01-februar-2002
3ROLPHUQLPDWHULDOL3ULGRELWHYLQSUHGVWDYLWHYSULPHUOMLYLK]QDþLOQLKHQRWRþNRYQLK
SRGDWNRYGHO9SOLYLRNROMDQDODVWQRVWL,62
Plastics - Acquisition and presentation of comparable multipoint data - Part 3:
Environmental influences on properties (ISO 11403-3:1999)
Kunststoffe - Ermittlung und Darstellung vergleichbarer Vielpunkt-Kennwerte - Teil 3:
Umgebungseinflüsse auf Eigenschaften (ISO 11403-3:1999)
Plastiques - Acquisition et présentation de données multiples comparables - Partie 3:
Effets induits par l'environnement sur les propriétés (ISO 11403-3:1999)
Ta slovenski standard je istoveten z: EN ISO 11403-3:2001
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
SIST EN ISO 11403-3:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 11403-3:2002

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SIST EN ISO 11403-3:2002
EUROPEAN STANDARD
EN ISO 11403-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2001
ICS 83.080.01; 83.080.10
English version
Plastics - Acquisition and presentation of comparable multipoint
data - Part 3: Environmental influences on properties (ISO
11403-3:1999)
Plastiques - Acquisition et présentation de données Kunststoffe - Ermittlung und Darstellung vergleichbarer
multiples comparables - Partie 3: Effets induits par Vielpunkt-Kennwerte - Teil 3: Umgebungseinflüsse auf
l'environnement sur les propriétés (ISO 11403-3:1999) Eigenschaften (ISO 11403-3:1999)
This European Standard was approved by CEN on 4 February 2001.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, 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
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11403-3:2001 E
worldwide for CEN national Members.

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SIST EN ISO 11403-3:2002
EN ISO 11403-3:2001 (E)
Foreword
The text of the International Standard from Technical Committee ISO/TC 61 "Plastics" of the
International Organization for Standardization (ISO) has been taken over as an European
Standard by Technical Committee CEN/TC 249 "Plastics", the secretariat of which is held by
IBN.
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 September 2001, and conflicting
national standards shall be withdrawn at the latest by September 2001.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United
Kingdom.
Endorsement notice
The text of the International Standard ISO 11403-3:1999 has been approved by CEN as a
European Standard without any modification.
NOTE: Normative references to International Standards are listed in annex ZA (normative).
2

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SIST EN ISO 11403-3:2002
EN ISO 11403-3:2001 (E)
Annex ZA (normative)
Normative references to international publications
with their relevant European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions
of any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE Where an International Publication has been modified by common modifications,
indicated by (mod.), the relevant EN/HD applies.
Publication Year Title EN Year
ISO 175 1999 Plastics — Determination of resistance to liquid EN ISO 175 2000
chemicals
ISO 291 1997 Plastics — Standard atmospheres for EN ISO 291 1997
conditioning and testing
ISO 294-1 1996 Plastics — Injection moulding of test specimens EN ISO 294-1 1998
of thermoplastic materials — Part 1: General
principles and moulding of multipurpose and bar
test specimens
ISO 294-2 1996 Plastics — Injection moulding of test specimens EN ISO 294-2 1998
of thermoplastic materials — Part 2: Small
tensile bars
ISO 295 1991 Plastics — Compression moulding of test EN ISO 295 1998
specimens of thermosetting materials
ISO 527-1 1993 Plastics — Determination of tensile properties — EN ISO 527-1 1996
Part 1: General principles
ISO 2578 1993 Plastics — Determination of time-temperatur EN ISO 2578 1998
limits after prolonged exposure to heat
ISO 2818 1994 Plastics — Preparation of test specimens by EN ISO 2818 1996
machining
ISO 3167 1993 Plastics — Multipurpose-test specimens EN ISO 3167 1996
ISO 4892-2 1994 Plastics — Methods of exposure to laboratory EN ISO 4892-2 1999
light sources — Part 2: Xenon arc sources
ISO 6252 1992 Plastics — Determination of environmental EN ISO 6252 1997
stress cracking — Constant tensile stress
method
ISO 11403-1 1994 Plastics — Aquisition and presentation of EN ISO 11403-1 1999
comparable multipoint data — Part 1:
Mechanical properties
3

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SIST EN ISO 11403-3:2002

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SIST EN ISO 11403-3:2002
INTERNATIONAL ISO
STANDARD 11403-3
First edition
1999-04-01
Plastics — Acquisition and presentation of
comparable multipoint data —
Part 3:
Environmental influences on properties
Plastiques — Acquisition et présentation de données multiples
comparables —
Partie 3: Effets induits par l’environnement sur les propriétés
A
Reference number
ISO 11403-3:1999(E)

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SIST EN ISO 11403-3:2002
ISO 11403-3:1999(E)
Contents
1 Scope .1
2 Normative references .1
3 Definitions .2
4 Specimen preparation .3
5 Conditioning.3
6 Test requirements.4
6.1 General.4
6.2 Indicative properties and indicative data .4
6.3 Test specimens.4
6.4 Test speed .4
6.5 Prolonged exposure to heat: ISO 2578.4
6.6 Liquid chemicals: ISO 175 .5
6.7 Environmental stress cracking under constant tensile stress: ISO 6252 .6
6.8 Artificial weathering: ISO 4892-2.8
7 Presentation of data .9
8 Precision.11
Annex A (informative) Information relating to certain test requirements.12
Annex B (normative) Chemicals for chemical resistance and environmental stress cracking resistance
tests.14
©  ISO 1999
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 • CH-1211 Genève 20 • Switzerland
Internet [e-mail]
Printed in Switzerland
ii

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SIST EN ISO 11403-3:2002
© ISO
ISO 11403-3:1999(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.
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 ISO 11403-3 was prepared by Technical Committee ISO/TC 61, , Subcommittee
Plastics
SC 2, Mechanical properties.
ISO 11403 consists of the following parts, under the general title Plastics — Acquisition and presentation of
comparable multipoint data:
 Part 1: Mechanical properties
 Part 2: Thermal and processing properties
 Part 3: Environmental influences on properties
Owing to the wide range of properties that are included in ISO 11403, it has been necessary to develop the standard in
stages, dividing the contents into parts. In this way, each part can be further developed separately and further parts
can be added when appropriate.
Annex B forms an integral part of this part of ISO 11403. Annex A is for information only.
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SIST EN ISO 11403-3:2002
© ISO
ISO 11403-3:1999(E)
Introduction
This International Standard has been prepared because users of plastics find sometimes that available data cannot
be used readily to compare the properties of similar materials, especially when the data have been supplied by
different sources. Even when the same standard tests have been used, they often allow the adoption of a wide
range of alternative test conditions, and the data obtained are not necessarily comparable. The purpose of this
International Standard is to identify specific methods and conditions of test to be used for the acquisition and
presentation of data in order that valid comparisons between materials can be made. These data are not
necessarily suitable for design.
1)
ISO 10350 is concerned with single-point data. Such data represent the most basic method for characterizing
materials and are useful for the initial stages of material selection. The present International Standard identifies test
conditions and procedures for the measurement and presentation of a more substantial quantity of data. Each
property here is characterized by multipoint data which demonstrate how that property depends upon important
variables such as time, temperature and environmental effects. Additional properties are also considered in this
standard. These data therefore enable more discriminating decisions to be made regarding the material's suitability
for a particular application. Some data are also considered adequate for undertaking predictions of performance in
service and of optimum processing conditions for moulding a component, although it should be recognized that, for
purposes of design, additional data will often be needed. One reason for this is that some properties are strongly
dependent upon the physical structure of the material. The test procedures referred to in this standard employ
standard test specimens, and the polymer structure in these specimens may be significantly different from that in
specific regions of a moulded component. Under these circumstances, therefore, the data will not be suitable for
accurate design calculations for product performance. The material supplier should be consulted for specific
information on the applicability of data.
ISO 10350 and the various parts of this International Standard together define the means for acquiring and
presenting a core set of comparable data for use in material selection. Use of these standards should result in a
rationalization of effort and a reduction of cost associated with provision of these data. Furthermore, reference to
these standards will simplify the development of data models for the computerized storage and exchange of data
concerning material properties.
Where appropriate, values for test variables have been specified by this standard. For some tests however, owing
to the wide range of conditions over which different plastics perform, the standard gives guidance in the selection of
certain test conditions so that they cover the operating range for that polymer. Because, in general, the properties
and performance specifications for different polymers differ widely, there is no obligation to generate data under all
the test conditions specified in this standard.
Data on a wide range of properties are needed to enable plastics to be selected and used in the large variety of
applications to which they are suited. ISO standards describe experimental procedures which are suitable for the
acquisition of relevant information on many of these properties. For other properties, however, ISO standards either
do not exist or exhibit shortcomings that complicate their use at present for the generation of comparable data (see
annex A). The standard has therefore been divided into parts so that each part can be developed independently. In
this way, additional properties can be included as new or revised standards become available.

1)
ISO 10350-1:1998, Plastics — Acquisition and presentation of comparable single-point data — Part 1: Moulding materials.
ISO 10350-2:—, Plastics — Acquisition and presentation of comparable single-point data — Part 2: Reinforced plastics.
(To be published)
iv

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SIST EN ISO 11403-3:2002
INTERNATIONAL STANDARD  © ISO ISO 11403-3:1999(E)
Plastics — Acquisition and presentation of comparable multipoint
data —
Part 3:
Environmental influences on properties
1 Scope
This part of ISO 11403 specifies test procedures for the acquisition and presentation of multipoint data which
demonstrate the behaviour of plastics under the following environments:
 prolonged exposure to heat;
 liquid chemicals;
 environmental stress cracking under a constant tensile stress;
 artificial weathering.
The tests are listed in order of increasing severity of the environment. By testing under the least severe
environments first, it is possible to make informed judgements regarding whether tests under more severe
conditions are worthwhile.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part of
ISO 11403. At the time of publication, the editions indicated were valid. All standards are subject to revision, and
parties to agreements based on this part of ISO 11403 are encouraged to investigate the possibility of applying the
most recent editions of the standards listed below. Members of IEC and ISO maintain registers of currently valid
International Standards.
2)
ISO 175:— , Plastics — Methods of test for the determination of the effects of immersion in liquid chemicals.
ISO 291:1997, Plastics — Standard atmospheres for conditioning and testing.
ISO 293:1986, Plastics — Compression moulding test specimens of thermoplastic materials.
ISO 294-1:1996, Plastics — Injection moulding of test specimens of thermoplastic materials — Part 1: General
principles, and moulding of multipurpose and bar test specimens.
ISO 294-2:1996, Plastics — Injection moulding of test specimens of thermoplastic materials — Part 2: Small tensile
bars.
ISO 295:1991,
Plastics — Compression moulding of test specimens of thermosetting materials.

2)
To be published. (Revision of ISO 175:1981)
1

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SIST EN ISO 11403-3:2002
© ISO
ISO 11403-3:1999(E)
ISO 527-1:1993, Plastics — Determination of tensile properties — Part 1: General principles.
3)
ISO 1268:1974 , Fibre-reinforced plastics — Preparation of glass fibre reinforced, resin bonded, low-pressure
laminated plates or panels for test purposes.
ISO 1817:1999, Rubber, vulcanized — Determination of the effect of liquids.
ISO 2578:1993, Plastics — Determination of time-temperature limits after prolonged exposure to heat.
ISO 2818:1994, Plastics — Preparation of test specimens by machining.
ISO 3167:1993, Plastics — Multipurpose test specimens.
ISO 4892-2:1994, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc sources.
ISO 6252:1992, Plastics — Determination of environmental stress cracking (ESC) — Constant-tensile-stress
method.
ISO 10724-1:1998, Plastics — Injection moulding of test specimens of thermosetting powder moulding compounds
(PMCs) — Part 1: General principles and moulding of multipurpose test specimens.
ISO 10724-2:1998, Plastics — Injection moulding of test specimens of thermosetting powder moulding compounds
(PMCs) — Part 2: Small plates.
ISO 11403-1:1994, Plastics — Acquisition and presentation of comparable multipoint data — Part 1: Mechanical
properties.
3 Definitions
For the purposes of this part of ISO 11403, the following definitions apply.
3.1
multipoint data
data characterizing the behaviour of a plastics material by means of a number of test results for a property
measured over a range of test conditions
3.2
indicative property
a property that has been selected to reveal the influence of an environment on a material through a comparison of
measurements of the property before and after exposure
3.3
indicative data
ratios of mean values of indicative properties after and before exposure
NOTE They give a measure of the severity of the influence of an environment on a material for specific exposure
conditions (see clause A.1).
3.4
tensile work to break
W
tB
the area under a plot of the applied stress against the grip displacement in a tensile test, the applied stress being
determined from the ratio of the tensile force to the minimum initial cross-sectional area of the specimen
2
NOTE It is expressed in kilojoules per square metre (kJ/m ).

3)
Under revision.
2

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SIST EN ISO 11403-3:2002
© ISO
ISO 11403-3:1999(E)
4 Specimen preparation
In the preparation of specimens by injection or compression moulding, the procedures described in ISO 293,
ISO 294-1, ISO 294-2, ISO 295, ISO 10724-1, ISO 10724-2 or ISO 1268 shall be used. The method of moulding
and the conditions will depend upon the material being moulded. If these conditions are specified in the International
Standard appropriate to the material, then they shall be adopted, where possible, for the preparation of every
specimen on which data are obtained using this part of ISO 11403. For those plastics for which moulding conditions
have not yet been standardized, the conditions employed shall be within the range recommended by the polymer
manufacturer and shall, for each of the processing methods, be the same for every specimen. Where moulding
conditions are not stipulated in any International Standard, the values used for the parameters in table 1 shall be
recorded with the data for that material.
Table 1 — Moulding parameters
Type of moulding Moulding method and Moulding parameters
material standard (where applicable)
Thermoplastic Injection, ISO 294-1 and -2 Melt temperature
Mould temperature
Injection velocity
Thermoplastic Compression, ISO 293 Moulding temperature
Moulding time
Cooling rate
Demoulding temperature
Thermosetting Injection, ISO 10724-1 and -2 Injection temperature
Mould temperature
Injection velocity
Cure time
Thermosetting Compression, ISO 295 Mould temperature
Moulding pressure
Cure time
Plastics composites Test plate production, ISO 1268 Fibre content
Mould temperature
Moulding pressure
Cure time
5 Conditioning
For materials having properties that are significantly dependent upon the concentration of absorbed water,
specimens shall be in equilibrium with an atmosphere of (50 – 5) % RH at 23 °C before exposure to the
environment, and for indicative property measurements prior to exposure (see the note) with the exception of tests
for prolonged exposure to heat (see 6.5). For these materials, consult the relevant material standard for procedures
for conditioning specimens. For materials that have properties that are not significantly sensitive to absorbed water,
specimens shall be conditioned in accordance with the International Standard appropriate to the material. If no
materials standard is available, condition test specimens at 23 °C – 2 °C and (50 – 10) % RH for a minimum length
of time of 88 h (see ISO 291). Reference to the use of any special conditioning shall be recorded with the data in the
tables in clause 7.
NOTE The water content may change during exposure to an environment, either through exposure to an elevated
temperature or, in the case of exposure to a chemical, through exchange of water with the chemical.
3

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SIST EN ISO 11403-3:2002
© ISO
ISO 11403-3:1999(E)
6 Test requirements
6.1 General
In acquiring data for the properties included in this part of ISO 11403, the exposure procedures described in the
corresponding ISO test standard for each property shall be followed.
Where tests are carried out at temperatures other than 23 °C, temperature values shall be chosen from the series of
integral multiples of 10 °C.
6.2 Indicative properties and indicative data (see clause A.1)
For each of the test requirements in 6.5 to 6.8, data shall be recorded as ratios of certain indicative property values
obtained at 23 °C before and after specified conditions of exposure. The tensile strength and the tensile work to
break are indicative properties that are common to each of the environmental exposure tests. The tensile strength is
either the yield stress s or, for brittle materials, the stress at break s (see ISO 527-1) and is determined by
Y B
dividing the value for the force at yield or break by the minimum initial cross-sectional area of the specimen in the
waisted region. The tensile work to break W (see 3.4) is determined from a conventional tensile test used to obtain
tB
the tensile strength and is normalized with respect to the minimum initial cross-sectional area of the specimen. In
this part of ISO 11403, all indicative data are recorded as a ratio of a measurement after exposure to a
measurement prior to exposure. It is therefore not necessary to specify units for indicative property measurements
but clearly these must be consistent throughout a series of measurements of each property.
6.3 Test specimens (see clauses A.1 and A.2)
For the determination of indicative properties, either the ISO 3167 multipurpose test specimen or the ISO 294-2
small tensile specimen (see figure 1) may be used. The small specimen shall have a thickness of 3 mm – 0,1 mm
and is recommended for materials that exhibit ductile failure prior to exposure (see clause A.1). The small specimen
may be prepared by injection moulding (see ISO 294-2 for thermoplastics), or by machining the shape from sheet or
compression moulded plates having a thickness of 3 mm – 0,1 mm (see ISO 2818). Where appropriate, the
moulding conditions specified in part 2 of the relevant material standard shall be used. For the determination of
environmental stress cracking resistance (6.7), the multipurpose test specimen shall be used, machined where
necessary as shown in figure 2 (see also clause A.5).
6.4 Test speed
For polymers that, prior to exposure, show no yielding and have a strain at break e less than or equal to 10 %
B
when tested at a speed of 50 mm/min (see ISO 527-1), a test speed of 5 mm/min – 1 mm/min shall be used with the
multipurpose test specimen and 1 mm/min – 0,2 mm/min with the small tensile specimen. For materials that yield, or
where . 10 % before exposure, these speeds shall be 50 mm/min 10 mm/min and 10 mm/min 2 mm/min
e – –
B
respectively for the two specimen types.
The test speeds for indicative property measurements after exposure to the environment shall be the same as those
adopted for tests prior to exposure and shall be recorded with the data in clause 7.
6.5 Prolonged exposure to heat: ISO 2578
For materials that absorb moisture, specimens shall be as-moulded and contained so as to avoid changes in water
content prior to all thermal exposures and reference tests.
The indicative properties are:
1 the tensile strength s or s (see 6.2);
Y B
2 the tensile work to break W (see 6.2).
tB
Determine reference values of each indicative property at 23 °C – 2 °C, using a minimum of five specimens (see
also 6.4).
Expose specimens to elevated temperatures selected to enable thermal endurance profiles to be determined.
4

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SIST EN ISO 11403-3:2002
© ISO
ISO 11403-3:1999(E)
After exposure, specimens shall be stored at 23 °C 2 °C for between 16 h and 96 h before the measurement of
–
indicative properties. For materials that absorb moisture, the specimens shall be sealed during this time interval in
order to prevent any change in the moisture content. Determine the thermal endurance graphs corresponding to a
threshold value of 50 % of each indicative property. A minimum of five specimens shall be used at each exposure
time, a minimum of five exposure times for each indicative property at each temperature and a minimum of four
temperatures for determining the profile for each property (see the note).
NOTE Some of the exposure times may yield results that can be used for the determination of both of the property profiles.
Record the temperature index TI corresponding to a time limit of 20 000 h and the halving interval HIC for each
indicative property as shown by table 2.
Dimensions in millimetres
l Overall length 60
b Width at ends 10 ± 0,2
b Minimum width 3 ± 0,2
1
r Radius 15 ± 1
h Thickness 3 ± 0,2
L Initial distance 25 ± 2
between grips
Figure 1 — Details of the ISO 294-2 small tensile specimen
Figure 2 — Test specimen for the measurement of environmental stress cracking resistance under tensile
stress, prepared by machining the central waist so that it is identical to that in the small tensile specimen
(see figure 1)
5

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SIST EN ISO 11403-3:2002
© ISO
ISO 11403-3:1999(E)
6.6 Liquid chemicals: ISO 175
To aid comparability of data generated for different materials and from different sources, this part of ISO 11403
requires that materials be exposed to the chemicals listed in annex B. If particular materials are not recommended
for use, or are not used, in the presence of any of these chemicals at the temperature specified, then the letters NR
(not recommended) shall be given in place of experimental data (see table 3).
Although not part of the comparable core data defined above, results for exposure to other chemicals may be
presented in addition. It is recommended that, for this purpose, the chemicals
...