EN ISO 527-4:2021

Plastics - Determination of tensile properties - Part 4: Test conditions for isotropic and orthotropic fibre-reinforced plastic composites (ISO 527-4:2021, Corrected version 2022-02)

This document specifies the test conditions for the determination of the tensile properties of isotropic and orthotropic fibre-reinforced plastic composites, based upon the general principles given in ISO 527-1.
NOTE 1   Unidirectional reinforced materials are covered by ISO 527-5.
The methods are used to investigate the tensile behaviour of the test specimens and for determining the tensile strength, tensile modulus, Poisson's ratios and other aspects of the tensile stress-strain relationship under the defined conditions.
The test method is suitable for use with the following materials:
—    fibre-reinforced thermosetting and thermoplastic composites incorporating non-unidirectional reinforcements such as mats, woven fabrics, woven rovings, chopped strands, combinations of such reinforcements, hybrids, rovings, short or milled fibres or preimpregnated materials (prepregs);
NOTE 2   Injection moulded specimens are covered by ISO 527-2.
—    combinations of the above with unidirectional reinforcements and multidirectional reinforced materials constructed from unidirectional layers, provided such laminates are symmetrical;
NOTE 3   Materials with completely or mainly unidirectional reinforcements are covered by ISO 527-5.
—    finished products made from materials mentioned above.
The reinforcement fibres covered include glass fibres, carbon fibres, aramid fibres and other similar fibres.

Kunststoffe - Bestimmung der Zugeigenschaften - Teil 4: Prüfbedingungen für isotrop und anisotrop faserverstärkte Kunststoffverbundwerkstoffe (ISO 527-4:2021, korrigierte Fassung 2022-02)

Dieses Dokument legt die Prüfbedingungen für die Bestimmung der Zugeigenschaften von isotropen und orthothropen faserverstärkten Kunststoffverbundwerkstoffen fest, auf der Basis der allgemeinen Grundsätze aus ISO 527-1.
ANMERKUNG 1 Unidirektional verstärkte Werkstoffe werden in ISO 527-5 behandelt.
Die Verfahren werden verwendet, um das Zugverformungsverhalten von Probekörpern zu untersuchen und die Zugfestigkeit, den Zugmodul, die Poissonzahlen und andere Gesichtspunkte der Zugspannungs-Dehnungs-Beziehung unter festgelegten Bedingungen zu ermitteln.
Das Prüfverfahren ist für Anwendung bei den folgenden Werkstoffen geeignet:
- thermoplastische und duroplastische (wärmehärtbare) Verbundwerkstoffe mit nicht-unidirektionalen Verstärkungen, z. B. Matten, Gewebe, Rovinggewebe, geschnittene Fasern, Kombinationen derartiger Verstärkungen, Mischverstärkungen, Rovings, Kurzfasern oder gemahlene Fasern oder vorimprägnierte Materialien (Prepregs);
ANMERKUNG 2 Spritzgegossene Probekörper werden in ISO 527-2 behandelt.
- Kombinationen der vorstehend genannten Werkstoffe mit unidirektionalen Verstärkungen und multidirektionale verstärkte Werkstoffe, die aus unidirektionalen Schichten aufgebaut sind, vorausgesetzt, derartige Schichtwerkstoffe (Laminate) sind symmetrisch;
ANMERKUNG 3 Werkstoffe mit ausschließlich oder überwiegend unidirektionalen Verstärkungen werden in ISO 527-5 behandelt.
- Fertigerzeugnisse aus diesen oben genannten Materialien.
Die berücksichtigten Verstärkungen schließen Glasfasern, Kohlenstofffasern, Aramidfasern und andere ähnliche Fasern ein.

Plastiques - Détermination des propriétés en traction - Partie 4 : Conditions d’essai pour les composites plastiques renforcés de fibres isotropes et orthotropes (ISO 527-4:2021, Version corrigée 2022-02)

Le présent document spécifie les conditions d’essai pour la détermination des propriétés en traction des composites plastiques renforcés de fibres isotropes et orthotropes, basées sur les principes généraux établis dans l’ISO 527‑1.
NOTE 1      Les matériaux renforcés unidirectionnels sont traités dans l’ISO 527‑5.
Les méthodes sont utilisées pour étudier le comportement en traction des éprouvettes et pour déterminer la résistance en traction, le module d’élasticité en traction, les coefficients de Poisson et d’autres aspects de la relation contrainte/déformation en traction dans les conditions définies.
La méthode d’essai convient aux matériaux suivants:
—    les composites thermodurcissables et thermoplastiques renforcés de fibres, contenant des renforts non unidirectionnels comme les mats, les tissus (fils de base ou stratifils), les fils de base coupés, les combinaisons de tels renforts, les hybrides, les stratifils, les fibres courtes et broyées ou les matériaux préimprégnés (prepregs);
NOTE 2      Les éprouvettes moulées par injection sont couvertes par l’ISO 527-2.
—    les combinaisons de matériaux ci-dessus avec un renfort unidirectionnel, et les matériaux renforcés multidirectionnels réalisés avec des couches unidirectionnelles, sous réserve que ces stratifiés soient symétriques;
NOTE 3      Les matériaux à renfort parfaitement ou principalement unidirectionnel sont couverts par l’ISO 527‑5.
—    les produits finis fabriqués avec les matériaux mentionnés ci-dessus.
Les fibres de renforcement concernées comprennent les fibres de verre, les fibres de carbone, les fibres d’aramide et autres fibres similaires.

Polimerni materiali - Določanje nateznih lastnosti - 4. del: Preskusni pogoji za izotropne in ortotropne z vlakni ojačene polimerne kompozite (ISO 527-4:2021, popravljena različica 2022-02)

Ta dokument določa preskusne pogoje za določanje nateznih lastnosti izotropnih in ortotropnih z vlakni ojačenih polimernih kompozitov na podlagi splošnih načel, opredeljenih v standardu ISO 527-1.
OPOMBA 1: Enosmerno ojačeni materiali so zajeti v standardu ISO 527-5. Uporabljene so metode za preučevanje nateznih lastnosti preskušancev ter za ugotavljanje natezne trdnosti, nateznega modula, Poissonovega razmerja in drugih vidikov razmerja natezna napetost/deformacija pri določenih pogojih. Preskusna metoda je ustrezna za naslednje materiale: – z vlakni ojačeni termoreaktivni in plastomerni kompoziti, ki vsebujejo večsmerne ojačitve, kot so mati, tkanine, tkani rovingi, rezane niti, kombinacije teh ojačitev, hibridi, rovingi, kratka in brušena vlakna ter predhodno impregnirani materiali;
OPOMBA 2: Primerki, oblikovani z injekcijskim vbrizgavanjem, so zajeti v standardu ISO 527-2. – kombinacije zgornjih materialov z enosmerno ojačitvijo in materialov z večsmerno ojačitvijo, izdelanih iz enosmernih slojev, pod pogojem, da so takšni laminati simetrični;
OPOMBA 3: Materiali s povsem ali pretežno enosmerno ojačitvijo so zajeti v standardu ISO 527-5. – končni izdelki iz zgoraj navedenih materialov. Zajeta vlakna za ojačitev vključujejo steklena vlakna, ogljikova vlakna, aramidna vlakna in druga podobna vlakna.

General Information

• Status: Withdrawn
• Publication Date: 21-Dec-2021
• Withdrawal Date: 11-Apr-2023
• ICS: 83.120 - Reinforced plastics
• Technical Committee: CEN/TC 249 - Plastics
• Drafting Committee: CEN/TC 249 - Plastics
• Ref Project: SIST EN ISO 527-4:2022 - Plastics - Determination of tensile properties - Part 4: Test conditions for isotropic and orthotropic fibre-reinforced plastic composites (ISO 527-4:2021, Corrected version 2022-02)

Relations

• Replaces: EN ISO 527-4:1997 - Plastics - Determination of tensile properties - Part 4: Test conditions for isotropic and orthotopic fibre-reinforced plastic composites (ISO 527-4:1997)
• Effective Date: 29-Dec-2021
• Replaced By: EN ISO 527-4:2023 - Plastics - Determination of tensile properties - Part 4: Test conditions for isotropic and orthotropic fibre-reinforced plastic composites (ISO 527-4:2023)
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2022
Nadomešča:
SIST EN ISO 527-4:1999
Polimerni materiali - Določanje nateznih lastnosti - 4. del: Preskusni pogoji za
izotropne in ortotropne z vlakni ojačene polimerne kompozite (ISO 527-4:2021)
Plastics - Determination of tensile properties - Part 4: Test conditions for isotropic and
orthotropic fibre-reinforced plastic composites (ISO 527-4:2021)
Kunststoffe - Bestimmung der Zugeigenschaften - Teil 4: Prüfbedingungen für isotrop
und anisotrop faserverstärkte Kunststoffverbundwerkstoffe (ISO 527-4:2021)
Plastiques - Détermination des propriétés en traction - Partie 4 : Conditions d’essai pour
les composites plastiques renforcés de fibres isotropes et orthotropes (ISO 527-4:2021)
Ta slovenski standard je istoveten z: EN ISO 527-4:2021
ICS:
83.120 Ojačani polimeri Reinforced plastics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 527-4
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2021
EUROPÄISCHE NORM
ICS 83.120 Supersedes EN ISO 527-4:1997
English Version
Plastics - Determination of tensile properties - Part 4: Test
conditions for isotropic and orthotropic fibre-reinforced
plastic composites (ISO 527-4:2021)
Plastiques - Détermination des propriétés en traction - Kunststoffe - Bestimmung der Zugeigenschaften - Teil
Partie 4 : Conditions d'essai pour les composites 4: Prüfbedingungen für isotrop und anisotrop
plastiques renforcés de fibres isotropes et orthotropes faserverstärkte Kunststoffverbundwerkstoffe (ISO
(ISO 527-4:2021) 527-4:2021)
This European Standard was approved by CEN on 4 October 2021.

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, Turkey 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 527-4:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 527-4:2021) has been prepared by Technical Committee ISO/TC 61 "Plastics" in
collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN.
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 June 2022, and conflicting national standards shall be
withdrawn at the latest by June 2022.
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 527-4:1997.
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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 527-4:2021 has been approved by CEN as EN ISO 527-4:2021 without any modification.

INTERNATIONAL ISO
STANDARD 527-4
Second edition
2021-12
Plastics — Determination of tensile
properties —
Part 4:
Test conditions for isotropic and
orthotropic fibre-reinforced plastic
composites
Plastiques — Détermination des propriétés en traction —
Partie 4: Conditions d'essai pour les composites plastiques renforcés
de fibres isotropes et orthotropes
Reference number
ISO 527-4:2021(E)
ISO 527-4:2021(E)
© ISO 2021
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 527-4:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 5
5 Apparatus . 5
6 Test specimens . 5
6.1 Shape and dimensions . 5
6.2 Preparation of specimens . 9
6.2.1 General . 9
6.2.2 End tabs for type 3 specimens . 9
6.2.3 Applications of end tabs for type 3 specimens . 9
6.3 Gauge marks . 9
6.4 Checking the specimens . 10
6.5 Anisotropy . 10
7 Number of specimens . .10
8 Conditioning .10
9 Procedure .10
9.1 Test atmosphere . 10
9.2 Measurement of specimen dimensions . 10
9.3 Clamping . 11
9.4 Prestresses . . 11
9.5 Setting of extensometers and strain gauges and placing of gauge marks . 11
9.6 Speed of testing . 11
9.6.1 For type 1B test specimens . 11
9.6.2 For type 2, type 3 and type 4 test specimens . 11
9.7 Recording of data . 11
10 Calculation and expression of results .11
10.1 Calculation of all properties for parallel sided specimens . 11
10.2 Failure location related calculation of tensile strength for type 4 specimens .12
11 Precision .12
12 Test report .12
Annex A (informative) Alignment of specimens .13
Annex B (informative) Testing with tapered tensile specimen geometry without tabs (type
4) .15
Annex C (informative) Unbonded tabs or gripping condition without tabs using fine grip
face .18
Annex D (normative) Specimen preparation for type 2 and type 3 .21
Annex E (normative) Failure location related calculation of tensile strength for type 4
specimens .23
Bibliography .27
iii
ISO 527-4:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of
...

SLOVENSKI STANDARD
01-marec-2022
Nadomešča:
SIST EN ISO 527-4:1999
Polimerni materiali - Določanje nateznih lastnosti - 4. del: Preskusni pogoji za
izotropne in ortotropne z vlakni ojačene polimerne kompozite (ISO 527-4:2021,
popravljena različica 2022-02)
Plastics - Determination of tensile properties - Part 4: Test conditions for isotropic and
orthotropic fibre-reinforced plastic composites (ISO 527-4:2021, Corrected version 2022-
02)
Kunststoffe - Bestimmung der Zugeigenschaften - Teil 4: Prüfbedingungen für isotrop
und anisotrop faserverstärkte Kunststoffverbundwerkstoffe (ISO 527-4:2021, korrigierte
Fassung 2022-02)
Plastiques - Détermination des propriétés en traction - Partie 4 : Conditions d’essai pour
les composites plastiques renforcés de fibres isotropes et orthotropes (ISO 527-4:2021,
Version corrigée 2022-02)
Ta slovenski standard je istoveten z: EN ISO 527-4:2021
ICS:
83.120 Ojačani polimeri Reinforced plastics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 527-4
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2021
EUROPÄISCHE NORM
ICS 83.120 Supersedes EN ISO 527-4:1997
English Version
Plastics - Determination of tensile properties - Part 4: Test
conditions for isotropic and orthotropic fibre-reinforced
plastic composites (ISO 527-4:2021, Corrected version
2022-02)
Plastiques - Détermination des propriétés en traction - Kunststoffe - Bestimmung der Zugeigenschaften - Teil
Partie 4 : Conditions d'essai pour les composites 4: Prüfbedingungen für isotrop und anisotrop
plastiques renforcés de fibres isotropes et orthotropes faserverstärkte Kunststoffverbundwerkstoffe (ISO
(ISO 527-4:2021, Version corrigée 2022-02) 527-4:2021, korrigierte Fassung 2022-02)
This European Standard was approved by CEN on 4 October 2021.

This European Standard was corrected and reissued by the CEN-CENELEC Management Centre on 09 March 2022.

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, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATIO N

EUROPÄISCHES KOMITEE FÜR NORMUN G

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 527-4:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 527-4:2021) has been prepared by Technical Committee ISO/TC 61 "Plastics" in
collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN.
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 June 2022, and conflicting national standards shall be
withdrawn at the latest by June 2022.
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 527-4:1997.
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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 527-4:2021, Corrected version 2022-02 has been approved by CEN as EN ISO 527-
4:2021 without any modification.

INTERNATIONAL ISO
STANDARD 527-4
Second edition
2021-12
Corrected version
2022-02
Plastics — Determination of tensile
properties —
Part 4:
Test conditions for isotropic and
orthotropic fibre-reinforced plastic
composites
Plastiques — Détermination des propriétés en traction —
Partie 4: Conditions d'essai pour les composites plastiques renforcés
de fibres isotropes et orthotropes
Reference number
ISO 527-4:2021(E)
ISO 527-4:2021(E)
© ISO 2021
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 527-4:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 5
5 Apparatus . 5
6 Test specimens . 5
6.1 Shape and dimensions . 5
6.2 Preparation of specimens . 9
6.2.1 General . 9
6.2.2 End tabs for type 3 specimens . 9
6.2.3 Applications of end tabs for type 3 specimens . 9
6.3 Gauge marks . 9
6.4 Checking the specimens . 10
6.5 Anisotropy . 10
7 Number of specimens . .10
8 Conditioning .10
9 Procedure .10
9.1 Test atmosphere . 10
9.2 Measurement of specimen dimensions . 10
9.3 Clamping . 11
9.4 Prestresses . . 11
9.5 Setting of extensometers and strain gauges and placing of gauge marks . 11
9.6 Speed of testing . 11
9.6.1 For type 1B test specimens . 11
9.6.2 For type 2, type 3 and type 4 test specimens . 11
9.7 Recording of data . 11
10 Calculation and expression of results .11
10.1 Calculation of all properties for parallel sided specimens . 11
10.2 Failure location related calculation of tensile strength for type 4 specimens .12
11 Precision .12
12 Test report .12
Annex A (informative) Alignment of specimens .13
Annex B (informative) Testing with tapered tensile specimen geometry without tabs (type
4) .15
Annex C (informative) Unbonded tabs or gripping condition without tabs using fine grip
face .18
Annex D (normative) Specimen preparation for type 2 and type 3 .21
Annex E (normative) Failure location related calculation of tensile strength for type 4
specimens .23
Bibliography .
...