EN ISO 9073-3:2023

SLOVENSKI STANDARD
01-september-2023
Vlaknovine - Preskusne metode - 3. del: Ugotavljanje natezne trdnosti in
pretržnega raztezka pri pretrganju s tračno metodo (ISO 9073-3:2023)
Nonwovens - Test methods - Part 3: Determination of tensile strength and elongation at
break using the strip method (ISO 9073-3:2023)
Vliesstoffe - Prüfverfahren - Teil 3: Bestimmung der Höchstzugkraft und der
Höchstzugkraftdehnung (ISO 9073-3:2023)
Nontissés - Méthodes d'essai - Partie 3: Détermination de la résistance à la traction et de
l'allongement à la rupture par la méthode sur bande (ISO 9073-3:2023)
Ta slovenski standard je istoveten z: EN ISO 9073-3:2023
ICS:
59.080.30 Tkanine Textile fabrics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 9073-3
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2023
EUROPÄISCHE NORM
ICS 59.080.30 Supersedes EN 29073-3:1992
English Version
Nonwovens - Test methods - Part 3: Determination of
tensile strength and elongation at break using the strip
method (ISO 9073-3:2023)
Nontissés - Méthodes d'¿essai - Partie 3: Détermination Vliesstoffe - Prüfverfahren - Teil 3: Bestimmung der
de la résistance à la traction et de l'allongement à la Höchstzugkraft und der Höchstzugkraftdehnung (ISO
rupture par la méthode sur bande (ISO 9073-3:2023) 9073-3:2023)
This European Standard was approved by CEN on 27 May 2023.

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, Türkiye 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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9073-3:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 9073-3:2023) has been prepared by Technical Committee ISO/TC 38 "Textiles"
in collaboration with Technical Committee CEN/TC 248 “Textiles and textile products” 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 2023, and conflicting national standards
shall be withdrawn at the latest by December 2023.
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 29073-3:1992.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 9073-3:2023 has been approved by CEN as EN ISO 9073-3:2023 without any
modification.
INTERNATIONAL ISO
STANDARD 9073-3
Second edition
2023-06
Nonwovens — Test methods —
Part 3:
Determination of tensile strength and
elongation at break using the strip
method
Nontissés — Méthodes d’essai —
Partie 3: Détermination de la résistance à la traction et de
l’allongement à la rupture par la méthode sur bande
Reference number
ISO 9073-3:2023(E)
ISO 9073-3:2023(E)
© ISO 2023
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 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 9073-3:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 4
5 Reagents and materials . 4
6 Apparatus . 5
6.1 Tensile testing machine (CRE or CRL) . 5
6.2 Clamps and jaw faces . 6
6.3 Container . 6
7 Conditioning . 6
8 Sampling . 6
8.1 General . 6
8.2 Laboratory sample . 7
8.3 Test specimens. 7
9 Preparation of specimens .7
9.1 General . 7
9.2 Dimensions . 7
9.3 Wet test specimens . 8
10 Preparation, calibration and verification of apparatus . 8
10.1 Tensile testing machine . 8
10.2 Clamping system . 8
10.3 Verification of the total operating system of the apparatus . 8
11 Procedure . 9
11.1 Gauge length . 9
11.2 Rate of extension . 9
11.3 Mounting of test specimens . 9
11.4 Operation . 10
11.5 Slippage . 10
11.6 Jaw breaks . 10
12 Calculation .10
12.1 Breaking force . 10
12.2 Measurement of apparent elongation . 11
12.3 For each testing situation . 11
13 Expression of results .11
14 Precision .11
15 Test report .11
Annex A (informative) Possible causes of low precision when strip tensile testing .13
Bibliography .14
iii
ISO 9073-3:2023(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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
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 38, Textiles, in collaboration with the
European Committee for Standardization (CEN) Technical Committee CEN/TC 248, Textiles and textile
products, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna
Agreement).
This second edition cancels and replaces the first edition (ISO 9073-3:1989), which has been technically
revised.
The main changes are as follows:
— the title has been changed from "Textiles — Test methods for nonwovens — Part 3: Determination
of tensile strength and elongation" to "Nonwovens — Test methods — Part 3 Determination of tensile
strength and elongation at break using the strip method";
— the mandatory Terms and definitions clause (Clause 3) has been added and subsequent clauses have
been renumbered;
— 8.2 has been revised.
A list of all parts in the ISO 9073 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
INTERNATIONAL STANDARD ISO 9073-3:2023(E)
Nonwovens — Test methods —
Part 3:
Determination of tensile strength and elongation at break
using the strip method
SAFETY WARNING — This document does not claim to address all the safety concerns, if
any, associated with its use. It is the responsibility of the user of this document to establish
appropriate safety and health practices and determine the applicability of regulatory limitations
prior to use. It is expected that the person performing this test has been fully trained in all
aspects of this procedure.
1 Scope
This document specifies a test method for the determination of the breaking force and elongation of
nonwovens using a strip method in conditioned or wet state. This test method describes two procedures,
Option A (width of test specimen: 25 mm) and Option B (width of test specimen: 50 mm).
This document specifies methods using constant rate of specimen extension (CRE) tensile testers.
Constant rate of loading (CRL) instruments is covered, for information, in ISO 2062:2009, Annex A, in
recognition of the fact that these instruments are still in use and can be used by agreement.
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 139, Textiles — Standard atmospheres for conditioning and testing
ISO 186, Paper and board — Sampling to determine average quality
ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection
ISO 3696, Water for analytical laboratory use — Specification and test methods
ISO 3951-1, Sampling procedures for inspection by variables — Part 1: Specification for single sampling
plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic
and a single AQL
ISO 7500-1, Metallic materials — Calibration and verification of static uniaxial testing machines — Part 1:
Tension/compression testing machines — Calibration and verification of the force-measuring system
ISO 10012, Measurement management systems — Requirements for measurement processes and measuring
equipment
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
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
ISO 9073-3:2023(E)
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
breaking force
maximum force (3.2) applied to a material carried to rupture
3.2
maximum force
force appearing during a test specimen (3.11) carried to rupture in a tensile test under the specified
conditions
3.3
force at rupture
force recorded at the point of rupture of a test specimen (3.11) during a tensile test
Note 1 to entry: See Figure 1.
3.4
constant-rate-of-extension tensile testing machine
CRE tensile testing machine
tensile-testing machine provided with one clamp which is stationary and another clamp which moves
with constant speed throughout the test, the entire testing system being virtually free from deflection
3.5
constant-rate-of-load tensile testing machine
CRL tensile testing machine
testing machine in which the rate of increase of the load being applied to the specimen is uniform with
time after the first 3 seconds
3.6
elongation
ratio of the extension (3.9) of a test specimen (3.11) to its initial length (3.15)
Note 1 to entry: Elongation is expressed as a percentage
3.7
elongation at maximum force
elongation (3.6) of a test specimen (3.11) produced by the maximum force (3.2)
Note 1 to entry: See Figure 1.
3.8
elongation at rupture
elongation (3.6) of a test specimen (3.11) corresponding to the force at rupture (3.3)
Note 1 to entry: See Figure 1.
3.9
extension
increase in length of a test specimen (3.11) produced by a force, in this context, stretching
3.10
sample
product or portion of a product taken from a production lot for testing purposes, identifiable and
traceable back to the origin
3.11
test specimen
specific portion of the identified sample (3.10) upon which a test is performed, many specimens
sometimes being tested from the same sample, using different locations
ISO 9073-3:2023(E)
3.12
strip test
tensile test in which the full width of the test specimen (3.11) is gripped in the jaws of the testing
machine
3.13
tensile strength
resistance of a material to breaking under tension
Note 1 to entry: See Figure 1.
Note 2 to entry: Tensile strength is preferably expressed in Newtons.
3.14
gauge length
distance between the two effective clamping points of a testing device
Note 1 to entry: The effective clamping points (or lines) of jaws can be checked by clamping a test specimen
under defined pretension with carbon copy paper to produce a gripping pattern on the test specimen and/or the
jaw faces.
3.15
initial length
length of a test specimen (3.11) under specified pretension between the two effective clamping points at
the beginning of certain tests
Note 1 to entry: See also 3.14.
ISO 9073-3:2023(E)
Key
X conventional strain
Y average stress
1 strain to fracture
2 uniform strain
3 offset yield strength
4 tensile strength
5 fracture stress
Figure 1 — Example of force-elongation curve
4 Principle
A test specimen of specified dimensions is extended at a constant rate until it ruptures. The maximum
force and the elongation at maximum force and, if required, the force at rupture and the elongation at
rupture are recorde
...