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 ploskovnih in konfekcioniranih tekstilij - 2. del: Ugotavljanje največje pretržne sile šiva po metodi grab (raztezanja) (ISO/FDIS 13935-2:2026)

General Information

• Status: Not Published
• Publication Date: 28-Apr-2026
• ICS: 59.080.30 - Textile fabrics
• Technical Committee: CEN/TC 248 - Textiles and textile products
• Current Stage: 6055 - CEN Ratification completed (DOR) - Publishing
• Start Date: 25-Apr-2026
• Completion Date: 25-Apr-2026
• Ref Project: kSIST FprEN 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/FDIS 13935-2:2026)

Relations

• Consolidated By: 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
• Effective Date: 12-Feb-2026
• Revises: 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

EN ISO 13935-2:2026 specifies a standardized method for determining the maximum force required to rupture a sewn seam in textiles using the grab test. Developed by CEN and adopted as an international ISO standard, it is mainly applicable to woven textile fabrics, including fabrics with stretch properties. The grab test is a mechanical procedure where force is applied perpendicularly to the seam using a constant-rate-of-extension (CRE) testing machine until seam failure occurs. This test method is essential for assessing seam tensile properties in fabrics and made-up textile articles, providing valuable data for quality assurance, product development, and regulatory compliance in the textile and apparel industries.

Key Topics

• Seam Maximum Force Measurement: The standard focuses on the systematic determination of maximum force to seam rupture, which is critical for understanding seam performance under stress.
• Grab Test Methodology: Only the central part of the specimen is gripped and stressed perpendicularly to the seam to replicate typical seam-loading scenarios.
• Applicability: Primarily suitable for woven fabrics, including those with elastic properties. Not normally intended for geotextiles, nonwovens, coated fabrics, textile-glass woven fabrics, or fabrics containing carbon fibers or polyolefin tape yarns.
• Sample and Specimen Preparation: Offers detailed guidance on preparing both seams and test specimens for valid and consistent results.
• Equipment Requirements: Test execution is limited to CRE tensile testing machines, ensuring controlled and repeatable force application.
• Test Reporting: Specifies the required elements for comprehensive test reports, promoting clarity and consistency in results documentation.

Applications

EN ISO 13935-2:2026 has broad applications throughout the textile industry, serving as a key tool for:

• Quality Assurance: Manufacturers use the grab test method to verify seam strength and durability, helping ensure that products withstand expected mechanical stresses in everyday use.
• Product Development: Designers and engineers can evaluate seam performance in prototypes and finished articles to fine-tune fabric selection and seam construction techniques.
• Performance Comparison: By following a standardized test protocol, organizations can compare the seam tensile properties of different materials or sewing methods objectively.
• Compliance and Certification: The standard supports regulatory requirements and provides benchmarks for contracts or specifications in business-to-business or business-to-government textile sales.
• Garment and Textile Design: Ensures seams in clothing, upholstery, and industrial textiles meet safety and durability standards before market release.
• Research and Development: Academic and industry researchers rely on repeatable, internationally recognized methods to compare results across studies and projects.

Related Standards

For comprehensive seam and fabric testing, consider these associated standards:

• ISO 13935-1: Seam tensile properties - Strip test method, suitable for straight seams using full-width specimens.
• ISO 13934-2: Tensile properties of fabrics - Grab method, for measuring general fabric strength.
• ISO 13934-1: Tensile properties of fabrics - Strip test, used for determining maximum force and elongation at break for textile fabrics.
• ISO 139: Standard atmospheres for conditioning and testing textiles - Ensures proper environmental controls for reliable results.
• ISO 7500-1: Calibration and verification of testing machines for tension/compression measurements.
• ISO 10012: Measurement management systems - Requirements for measuring processes and equipment.
• ISO 11610: Vocabulary for protective clothing, relevant for clarity in textile term usage.

Practical Value

By aligning with EN ISO 13935-2:2026, organizations benefit from internationally accepted procedures for seam strength evaluation, enhancing product reliability, supporting market access, and underpinning consistency in textile quality control. The grab method’s focus on real-world seam stress situations makes it indispensable for anyone aiming to deliver safe, durable textile products in global markets.

Keywords: EN ISO 13935-2, seam tensile properties, grab test, sewn seams, textile testing, fabric strength, CEN, ISO textiles, seam rupture, quality assurance, woven fabrics, textile standards.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN ISO 13935-2:2025
01-april-2025
Tekstilije - Natezne lastnosti šivov ploskovnih in konfekcioniranih tekstilij - 2. del:
Ugotavljanje največje pretržne sile šiva po metodi grab (raztezanja) (ISO/DIS 13935
-2:2025)
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/DIS 13935
-2:2025)
Textilien - Zugversuche an Nähten in textilen Flächengebilden und Konfektionstextilien -
Teil 2: Bestimmung der Höchstzugkraft von Nähten mit dem Grab-Zugversuch (ISO/DIS
13935-2:2025)
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/DIS 13935-2:2025)
Ta slovenski standard je istoveten z: prEN ISO 13935-2
ICS:
59.080.30 Tkanine Textile fabrics
61.020 Oblačila Clothes
oSIST prEN ISO 13935-2:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 13935-2:2025
oSIST prEN ISO 13935-2:2025
DRAFT
International
Standard
ISO/DIS 13935-2
ISO/TC 38/SC 24
Textiles — Seam tensile properties
Secretariat: AFNOR
of fabrics and made-up textile
Voting begins on:
articles —
2025-02-13
Part 2:
Voting terminates on:
2025-05-08
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)
ICS: 59.080.30; 61.020
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
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RECIPIENTS OF THIS DRAFT ARE INVITED
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NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 13935-2:2025(en)
oSIST prEN ISO 13935-2:2025
DRAFT
ISO/DIS 13935-2:2025(en)
International
Standard
ISO/DIS 13935-2
ISO/TC 38/SC 24
Textiles — Seam tensile properties
Secretariat: AFNOR
of fabrics and made-up textile
Voting begins on:
articles —
Part 2:
Voting terminates on:
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)
ICS: 59.080.30; 61.020
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
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NOTIFICATION OF ANY RELEVANT PATENT
Phone: [phone]
RIGHTS OF WHICH THEY ARE AWARE AND TO
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Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 13935-2:2025(en)
ii
oSIST prEN ISO 13935-2:2025
ISO/DIS 13935-2:2025(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 .3
6.3 Equipment for cutting test specimens.3
7 Atmosphere for conditioning and testing . 3
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 .4
9 Procedure . 6
9.1 Gauge length .6
9.2 Rate of extension .6
9.3 Mounting of test specimens .6
9.4 Operation .6
10 Calculation and expression of results . 7
11 Test report . 7
Annex A (informative) Arrangements of jaws for the grab test . 8
Annex B (informative) Considerations on straight seams and sampling of structural seams on
garments . 9
Bibliography .11

iii
oSIST prEN ISO 13935-2:2025
ISO/DIS 13935-2:2025(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 documents 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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent
rights identified during the development of the document will be in the Introduction and/or on the ISO list of
patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on 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 the following URL: 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.
[1]
This third edition cancels and replaces the second edition (ISO 13935-2 ), which has been technically
revised.
The main changes compared to the previous edition are as follows:
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 atwww.iso.org/members.html.

iv
oSIST prEN ISO 13935-2:2025
ISO/DIS 13935-2:2025(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 Bibliography for informative references.
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 13934-2:2014 (see Bibliography).

v
oSIST prEN ISO 13935-2:2025
oSIST prEN ISO 13935-2:2025
DRAFT International Standard ISO/DIS 13935-2:2025(en)
Textiles — Seam tensile properties of fabrics and made-up
textile articles —
Part 2:
Determination of maximum force to seam rupture using the
grab method
1 Scope
This document specifies methods for the determination of seam maximum force of sewn seams when the force
is applied perpendicularly to the seam. This document describes the method known as the grab test (3.2).
[3]
NOTE ISO 13935-1:2014 describes the method known as the strip test. For informative references see the
Bibliography.
The method is mainly 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 (see
Bibliography).
The sewn fabrics can be obtained from previously sewn articles or can be prepared from fabric samples, as
agreed by the parties interested in the results.
This method is applicable to straight seams only and not to curved seams.
The method is restricted to the use of constant rate of extension (CRE) testing machines.
2 Normative references
The f
...