SIST EN ISO 13935-2:2026

Textiles - Seam tensile properties of fabrics and made-up textile articles - Part 2: Determination of maximum force to seam rupture using the grab method (ISO 13935-2:2026)

This document specifies methods for the determination of seam maximum force of sewn seams when the force is applied perpendicularly to the seam. It describes the method known as the grab test.
The method defined in this document is applicable to woven textile fabrics, including fabrics which exhibit stretch characteristics imparted by the presence of an elastomeric fibre, mechanical or chemical treatment. It can be applicable to fabrics produced by other techniques. It is normally not applicable to geotextiles, nonwovens, coated fabrics, textile-glass woven fabrics and fabrics made from carbon fibres or polyolefin tape yarns.[2], [3], [4]
This method is applicable to straight seams only (obtained from previously sewn articles or prepared from fabric samples) and not to curved seams (see Annex B for considerations on seams).
The method is restricted to the use of constant-rate-of-extension (CRE) testing machines.

Textilien - Zugversuche an Nähten in textilen Flächengebilden und Konfektionstextilien - Teil 2: Bestimmung der Höchstzugkraft von Nähten mit dem Grab-Zugversuch (ISO 13935-2:2026)

Textiles - Propriétés de résistance à la traction des coutures d'étoffes et d'articles textiles confectionnés - Partie 2: Détermination de la force maximale avant rupture des coutures par la méthode d'arrachement (Grab test) (ISO 13935-2:2026)

Le présent document spécifie des méthodes pour la détermination de la force maximale des coutures avec application de la force perpendiculairement à la couture. Le présent document décrit la méthode dite essai d’arrachement.
La méthode d’essai définie dans ce document s’applique aux étoffes tissées, y compris les étoffes qui présentent des caractéristiques d’extensibilité induites par la présence de fibres élastomères, par traitement mécanique ou chimique. Elle peut être appliquée aux étoffes produites par d’autres techniques. Elle ne s’applique normalement pas aux géotextiles, aux nontissés, aux support textiles revêtus, aux tissus en verre textile et aux étoffes en fibres de carbone ou en fils provenant de lames de polyoléfine.[2],[3],[4]
La présente méthode d’essai s’applique aux coutures droites uniquement (obtenues à partir d’articles préalablement cousus ou préparées à partir d’échantillons d’étoffes) et non pas aux coutures courbes (voir l’Annexe B pour les considérations sur les coutures).
La présente méthode permet uniquement l’utilisation d’appareils d’essai à vitesse constante d’allongement (CRE).

Tekstilije - Natezne lastnosti šivov na tkaninah in konfekcijskih tekstilijah - 2. del: Ugotavljanje največje pretržne sile šiva po metodi grab (raztezanja) (ISO 13935-2:2026)

Ta dokument določa metode za določanje največje sile šiva pri šivanih šivih, ko je sila uporabljena pravokotno na šiv. Opisuje metodo, znano kot grab test (preizkus z oprijemom).
Metoda, opredeljena v tem dokumentu, je uporabna za tkane tekstilne tkanine, vključno s tkaninami, ki izkazujejo raztezne lastnosti zaradi prisotnosti elastomernih vlaken, mehanske ali kemične obdelave. Lahko je uporabna tudi za tkanine, proizvedene z drugimi tehnikami. Običajno ni uporabna za geotekstile, netkane tkanine, prevlečene tkanine, tkane tkanine iz tekstilnega stekla in tkanine, izdelane iz ogljikovih vlaken ali poliolefinskih trakovnih prediv.
Ta metoda je uporabna samo za ravne šive (pridobljene iz predhodno šivanih izdelkov ali pripravljene iz vzorcev tkanin) in ne za ukrivljene šive (glej Prilogo B za razmisleke o šivih).
Metoda je omejena na uporabo preizkuševalnih strojev s konstantno hitrostjo raztezanja (CRE).

General Information

• Status: Published
• Public Enquiry End Date: 29-Apr-2025
• Publication Date: 21-May-2026
• ICS: 59.080.30 - Textile fabrics
• ICS: 61.020 - Clothes
• Technical Committee: ITEK - Textile and textile products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 13-May-2026
• Due Date: 18-Jul-2026
• Completion Date: 22-May-2026
• Ref Project: EN ISO 13935-2:2026 - Textiles - Seam tensile properties of fabrics and made-up textile articles - Part 2: Determination of maximum force to seam rupture using the grab method (ISO 13935-2:2026)

Relations

• Referred By: SIST EN 15614:2007 - Protective clothing for firefighters - Laboratory test methods and performance requirements for wildland clothing
• Effective Date: 06-May-2026
• Referred By: SIST EN 14325:2004 - Protective clothing against chemicals - Test methods and performance classification of chemical protective clothing materials, seams, joins and assemblages
• Effective Date: 06-May-2026
• Referred By: SIST EN 16689:2017 - Protective clothing for firefighters - Performance requirements for protective clothing for technical rescue
• Effective Date: 06-May-2026
• Referred By: SIST EN 943-1:2003 - Protective clothing against liquid and gaseous chemicals, including liquid aerosols and solid particles - Part 1: Performance requirements for ventilated and non-ventilated "gas-tight" (Type 1) and "non-gas-tight" (Type 2) chemical protective suits
• Effective Date: 06-May-2026
• Referred By: SIST EN 4863:2023 - Aerospace series - Rotorcraft immersion suits - Requirements, testing and marking
• Effective Date: 06-May-2026
• Referred By: SIST EN 343:2003+A1:2007 - Protective clothing - Protection against rain
• Effective Date: 06-May-2026
• Referred By: SIST EN 17673:2022 - Protective clothing - Protection against heat and flame - Requirements and test methods for garments with integrated smart textiles and non textile elements
• Effective Date: 06-May-2026
• Referred By: SIST EN 659:2003+A1:2008 - Protective gloves for firefighters
• Effective Date: 06-May-2026
• Referred By: SIST EN 1486:2007 - Protective clothing for fire-fighters - Test methods and requirements for reflective clothing for specialised fire-fighting
• Effective Date: 06-May-2026
• Referred By: SIST EN 14225-2:2018 - Diving suits - Part 2: Dry suits - Requirements and test methods
• Effective Date: 06-May-2026
• Referred By: SIST EN 13034:2005+A1:2009 - Protective clothing against liquid chemicals - Performance requirements for chemical protective clothing offering limited protective performance against liquid chemicals (Type 6 and Type PB [6] equipment)
• Effective Date: 06-May-2026
• Revises: SIST EN ISO 13935-2:2014 - Textiles - Seam tensile properties of fabrics and made-up textile articles - Part 2: Determination of maximum force to seam rupture using the grab method (ISO 13935-2:2014)
• Effective Date: 15-Nov-2023

Overview

SIST EN ISO 13935-2:2026 – Textiles – Seam Tensile Properties of Fabrics and Made-up Textile Articles – Part 2: Determination of Maximum Force to Seam Rupture Using the Grab Method establishes an internationally recognized method for determining the seam strength of woven textiles. This standard is highly relevant to manufacturers, testing laboratories, and quality assurance professionals in the textile industry, aiming to assess the maximum force required to cause seam rupture when force is applied perpendicularly using the grab method.

The grab method, as defined in this standard, involves gripping only the central part of a fabric specimen with a sewn seam using a constant-rate-of-extension (CRE) testing machine. The process allows for accurate assessment of seam tensile strength, which is crucial for evaluating the durability and suitability of fabrics and finished textile articles in various end uses.

Key Topics

• Scope of Application: The method is primarily intended for woven fabrics but may be applicable to textiles with stretch characteristics from elastomeric fibres, mechanical, or chemical treatments. It is not generally intended for nonwovens, coated fabrics, geotextiles, textile-glass woven fabrics, or fabrics made from carbon fibres or polyolefin tape yarns.
• Test Specimen Preparation: The standard details how to prepare seams and cut test specimens, including seam allowance, thread selection, and sampling location for representative results.
• Testing Apparatus: Use of a constant-rate-of-extension (CRE) machine is required, ensuring consistent test parameters such as gauge length (100 ± 1 mm) and extension rate (50 mm/min).
• Grab Test Procedure: The grab test involves applying tensile force to the center of a test specimen with a straight seam until rupture occurs, recording the maximum force, and noting the nature of the failure (e.g., seam rupture, fabric tear, thread breakage).
• Calculation and Reporting: The arithmetic mean of maximum seam strength is calculated for representative specimens. Comprehensive reporting is outlined to ensure full traceability and repeatability.

Applications

ISO 13935-2:2026 is essential for:

• Quality Control in Textile Manufacturing: Assessing seam strength during product development and production to ensure consistency and performance.
• Comparative Material Testing: Benchmarking different fabrics, seams, sewing threads, and assembly techniques for garments, furnishings, and technical textiles.
• Product Safety and Compliance: Meeting regulatory or client specifications for textiles used in clothing, upholstery, and made-up articles where seam integrity is critical.
• Performance Testing of Finished Goods: Testing laboratory samples taken from finished garments or other sewn articles to verify that seam construction meets usage requirements.
• Research and Development: Developing new textile products or improving existing ones to optimize seam strength and durability.

Related Standards

Organizations involved in textile testing and product development may also reference the following related standards:

• ISO 13935-1: Seam tensile properties – Strip method
• ISO 13934-2: Tensile properties of fabrics – Grab method (for fabrics, not seams)
• ISO 13934-1: Tensile properties – Strip method (for fabrics)
• ISO 139: Conditioning and testing atmospheres for textiles
• ISO 7500-1: Calibration and verification of static uniaxial testing machines
• ISO 10012: Measurement management systems

Practical Value

Implementing the procedures in SIST EN ISO 13935-2:2026 ensures robust evaluation of seam tensile properties, contributing to the reliability, safety, and marketability of textile products. By standardizing the grab test technique, the document enhances comparability of results between laboratories and across product lines, supporting manufacturers and buyers in meeting international quality expectations for textile seams.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2026
Tekstilije - Natezne lastnosti šivov na tkaninah in konfekcijskih tekstilijah - 2. del:
Ugotavljanje največje pretržne sile šiva po metodi grab (raztezanja) (ISO 13935-
2:2026)
Textiles - Seam tensile properties of fabrics and made-up textile articles - Part 2:
Determination of maximum force to seam rupture using the grab method (ISO 13935-
2:2026)
Textilien - Zugversuche an Nähten in textilen Flächengebilden und Konfektionstextilien -
Teil 2: Bestimmung der Höchstzugkraft von Nähten mit dem Grab-Zugversuch (ISO
13935-2:2026)
Textiles - Propriétés de résistance à la traction des coutures d'étoffes et d'articles textiles
confectionnés - Partie 2: Détermination de la force maximale avant rupture des coutures
par la méthode d'arrachement (Grab test) (ISO 13935-2:2026)
Ta slovenski standard je istoveten z: EN ISO 13935-2:2026
ICS:
59.080.30 Tkanine Textile fabrics
61.020 Oblačila Clothes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 13935-2
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2026
EUROPÄISCHE NORM
ICS 59.080.30 Supersedes EN ISO 13935-2:2014
English Version
Textiles - Seam tensile properties of fabrics and made-up
textile articles - Part 2: Determination of maximum force
to seam rupture using the grab method (ISO 13935-
2:2026)
Textiles - Propriétés de résistance à la traction des Textilien - Zugversuche an Nähten in textilen
coutures d'étoffes et d'articles textiles confectionnés - Flächengebilden und Konfektionstextilien - Teil 2:
Partie 2: Détermination de la force maximale avant Bestimmung der Höchstzugkraft von Nähten mit dem
rupture des coutures par la méthode d'arrachement Grab-Zugversuch (ISO 13935-2:2026)
(Grab test) (ISO 13935-2:2026)
This European Standard was approved by CEN on 25 April 2026.

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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13935-2:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 13935-2:2026) 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 October 2026, and conflicting national standards shall
be withdrawn at the latest by October 2026.
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 13935-2:2014.
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 13935-2:2026 has been approved by CEN as EN ISO 13935-2:2026 without any
modification.
International
Standard
ISO 13935-2
Third edition
Textiles — Seam tensile properties
2026-04
of fabrics and made-up textile
articles —
Part 2:
Determination of maximum force
to seam rupture using the grab
method
Textiles — Propriétés de résistance à la traction des coutures
d'étoffes et d'articles textiles confectionnés —
Partie 2: Détermination de la force maximale avant rupture des
coutures par la méthode d'arrachement (Grab test)
Reference number
ISO 13935-2:2026(en) © ISO 2026

ISO 13935-2:2026(en)
© ISO 2026
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 13935-2:2026(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Sampling . 2
6 Apparatus . 3
6.1 CRE machine .3
6.2 Equipment for sewing defined seams .4
6.3 Equipment for cutting test specimens.4
7 Atmosphere for conditioning and testing . 4
8 Preparation of seams and of test specimens . 4
8.1 Preparation of seams, if required, before testing .4
8.2 Preparation of adjacent test specimens from one laboratory sample .4
8.3 Preparation of test specimens .5
9 Procedure . 7
9.1 Gauge length .7
9.2 Rate of extension .7
9.3 Mounting of test specimens .7
9.4 Operation .7
10 Calculation and expression of results . 7
11 Test report . 8
Annex A (informative) Arrangements of jaws for the grab test . 9
Annex B (informative) Considerations on straight seams and sampling of structural seams on
garments . 10
Bibliography .13

iii
ISO 13935-2:2026(en)
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, Subcommittee SC 24, Conditioning
atmospheres and physical tests for textile fabrics, 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 third edition cancels and replaces the second edition (ISO 13935-2:2014), which has been technically
revised.
The main changes are as follows:
— in Clause 3, a definition of structural seam (3.5) has been added;
— in Clause 5, details on the seam sampling have been added;
— in 6.1.7, a third option c) for the clamps has been added;
— 8.2, a subclause dedicated to preparation of adjacent test specimens has been revised;
— 8.3, a subclause dedicated to preparation of test specimens from garments has been revised;
— a new Annex B related to straight seams and sampling of structural seams on garments has been added.
A list of all parts in the ISO 13935 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
ISO 13935-2:2026(en)
Introduction
This document has been prepared in the context of several test methods for determination of certain
mechanical properties of textiles using mainly tensile testing machines, e.g. tensile properties, seam tensile
properties, tear properties, seam slippage. The procedure for these standards agrees where appropriate.
The results obtained by one of the methods should not be compared with those obtained by the other
methods. See References [2], [3] and [4].
Where it is intended to compare the seam maximum force values of sewn seams with the fabric maximum
force, it is important to use the same type of test, test conditions and test specimens in the tests in this
[2]
document and ISO 13934-2 .
...