SIST EN ISO 294-5:2026
(Main)Plastics - Injection moulding of test specimens of thermoplastic materials - Part 5: Preparation of standard specimens for investigating anisotropy (ISO 294-5:2026)
Plastics - Injection moulding of test specimens of thermoplastic materials - Part 5: Preparation of standard specimens for investigating anisotropy (ISO 294-5:2026)
This document specifies a mould (designated the type F ISO mould) for the injection moulding of plates with a preferred size of 80 mm × 120 mm, and a preferred thickness of 2 mm for single-point and multi-point data acquisition. Suitable test specimens according to ISO 20753 type A22 or B3 are then machined or stamped from the plates and used to obtain information on the anisotropy. For the design of plastic parts, this will provide upper and lower bounds for the tensile properties.
Investigation of the anisotropy of materials is a special procedure intended to provide guidance in the design of mouldings for end-use applications and is not intended as a quality control tool.
In the injection moulding of thermoplastic materials, the flow of molten polymer can influence the orientation of fillers such as fibreglass or the orientation of polymer chains, resulting in anisotropic behaviour.
For the purposes of this document, the flow direction is defined as the direction from the gate to the far end of the mould cavity and the cross direction as the direction perpendicular to the flow direction.
The type F mould is not intended to replace the type D mould used to determine the moulding shrinkage of thermoplastics.
Kunststoffe - Spritzgießen von Probekörpern aus Thermoplasten - Teil 5: Herstellung von Standardprobekörpern zur Ermittlung der Anisotropie (ISO 294-5:2026)
Dieses Dokument legt ein Werkzeug fest (bezeichnet als ISO-Werkzeug Typ F) zum Spritzgießen von Platten mit den bevorzugten Maßen von 80 mm × 120 mm und einer bevorzugten Dicke von 2 mm für die Erfassung von Einpunkt und Mehrpunktkennwerten. Geeignete Probekörper nach ISO 20753 Typ A22 oder Typ B3 werden aus den Platten maschinell herausgearbeitet oder ausgestanzt und dazu verwendet, Informationen über die Anisotropie zu erhalten. Bei der Gestaltung von Kunststoffbauteilen bietet dies Ober- und Untergrenzen für die Zugeigenschaften.
Die Untersuchung der Anisotropie von Werkstoffen ist ein spezielles Verfahren, das vorgesehen ist, eine Orientierungshilfe bei der Gestaltung von Spritzgussformen für Endanwendungen zu bieten; es ist nicht als Werkzeug zur Qualitätssicherung bestimmt.
Beim Spritzgießen von Thermoplasten kann der Fluss des geschmolzenen Polymers die Ausrichtung von Füllstoffen, z. B. Glasfasern, oder die Ausrichtung von Polymerketten beeinträchtigen, was sich auf das anisotrope Verhalten auswirken kann.
Für die Anwendung dieses Dokumentes ist die Fließrichtung als die Richtung vom Anschnitt (Zulauf) bis zum äußersten Ende des Formnests und die Querrichtung als die Richtung senkrecht zur Fließrichtung festgelegt.
Das Werkzeug Typ F ist nicht dafür vorgesehen das Werkzeug Typ D zu ersetzen, das benutzt wird, um die Formschwindung von Thermoplasten zu ermitteln.
Plastiques - Moulage par injection des éprouvettes de matériaux thermoplastiques - Partie 5: Préparation d'éprouvettes normalisées pour déterminer l'anisotropie (ISO 294-5:2026)
Le présent document spécifie un moule (appelé moule ISO de type F) pour le moulage par injection de plaques avec des dimensions préférentielles de 80 mm × 120 mm ayant une épaisseur préférentielle de 2 mm pour l'acquisition des caractéristiques intrinsèques en simples ou multipoints. Des éprouvettes conformes à l’ISO 20753 de type A22 ou B3 sont ensuite usinées ou découpées à l’emporte-pièce à partir des plaques et utilisées pour obtenir des informations sur l'anisotropie. Pour la conception des pièces en matière plastique, cela va apporter des limites inférieures et supérieures aux propriétés en traction.
La détermination de l'anisotropie des matériaux est un mode opératoire spécial destiné à fournir des lignes directrices lors de la conception des moulages pour des applications finales et n'est pas destiné à être utilisé comme outil de contrôle qualité.
Dans un thermoplastique moulé par injection, le flux du polymère fondu peut influer sur l'orientation des charges comme les fibres de verre ou sur l'orientation des chaînes de polymères. Il peut en découler un comportement anisotrope.
Pour le présent document, la direction du flux est définie comme étant la direction allant du seuil jusqu'au fond de la cavité du moule, et la direction transversale est la direction perpendiculaire à la direction du flux.
Le moule de type F n'est pas destiné à remplacer le moule de type D utilisé pour la détermination du retrait au moulage des thermoplastiques.
Polimerni materiali - Vbrizgavanje plastomernih preskušancev - 5. del: Priprava standardnih preskušancev za preiskovanje anizotropije (ISO 294-5:2026)
General Information
- Status
- Published
- Public Enquiry End Date
- 30-Jan-2025
- Publication Date
- 22-Feb-2026
- Technical Committee
- IPMA - Polimer materials and products
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 10-Feb-2026
- Due Date
- 17-Apr-2026
- Completion Date
- 23-Feb-2026
Relations
- Effective Date
- 09-Feb-2026
- Referred By
SIST EN 60695-10-2:2015 - Fire hazard testing - Part 10-2: Abnormal heat - Ball pressure test - Effective Date
- 09-Feb-2026
- Referred By
SIST EN IEC 63522-56:2025 - Electrical relays - Tests and measurements - Part 56: Ball pressure test - Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 19-Jan-2023
Overview
FprEN ISO 294-5 (ISO/FDIS 294-5:2025) specifies the type F ISO mould and preparation procedure for injection-moulded plates used to investigate anisotropy in thermoplastic materials. The standard defines preferred plate dimensions (80 mm × 120 mm) and a preferred thickness (2 mm) to produce specimens that highlight the maximum anisotropic behaviour caused by flow-induced orientation of fibres or polymer chains. The procedure is intended to guide designers and materials engineers in assessing upper and lower bounds for mechanical properties of mouldings - it is not intended as a routine quality‑control test.
Key topics and requirements
- Type F ISO mould: Two-cavity mould producing plates of preferred size 80 × 120 mm (minimum length ≥ 120 mm, width ≥ 80 mm). Preferred thickness 2 mm (other depths allowed to study different skin/core ratios).
- Specimen geometry and gating: Flood gate and runner arrangement as specified; gate height is half the cavity depth if other thicknesses are used. Typical projected area and shot volume for runners/gates/cavities are approximately 20 000 mm² and 40 000 mm³, respectively.
- Anisotropy definition: Flow direction = gate → far end of cavity; cross direction = perpendicular to flow. Anisotropy arises from fibre and chain orientation during mould filling.
- Process sensitivity: Skin-to-core thickness ratio, and therefore anisotropy, depends on specimen thickness and injection (fill) velocity. The 2 mm plate gives a high skin/core ratio that maximizes anisotropic contrast with limited sensitivity to injection rate.
- Instrumentation and machine: Use an injection‑moulding machine meeting ISO 294‑1 requirements; pressure sensors are optional and, if used, should be centrally located across the cavity width.
- Scope limitations: The type F mould is not a substitute for the type D mould (used for moulding shrinkage) and the method is for design guidance, not material acceptance testing.
Applications and who should use it
- Materials and plastics engineers evaluating flow-induced anisotropy in reinforced or filled thermoplastics.
- Mould and part designers seeking upper/lower tensile property bounds for structural components.
- R&D laboratories studying the effects of processing conditions (thickness, fill rate, gating) on mechanical behaviour.
- Suppliers and formulators demonstrating potential anisotropic performance to OEMs (for design guidance rather than QC certification).
Related standards
- ISO 294-1:2017 - General principles for injection moulding of test specimens
- ISO 20753 - Plastics - Test specimens
- ISO 2818 - Preparation of test specimens by machining
- Other parts of the ISO 294 series covering multipurpose and bar test specimens
Keywords: FprEN ISO 294-5, ISO 294-5, type F ISO mould, injection moulding, anisotropy, thermoplastic test specimens, 80×120×2 mm plate, skin-core ratio, fibre orientation.
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Frequently Asked Questions
SIST EN ISO 294-5:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Plastics - Injection moulding of test specimens of thermoplastic materials - Part 5: Preparation of standard specimens for investigating anisotropy (ISO 294-5:2026)". This standard covers: This document specifies a mould (designated the type F ISO mould) for the injection moulding of plates with a preferred size of 80 mm × 120 mm, and a preferred thickness of 2 mm for single-point and multi-point data acquisition. Suitable test specimens according to ISO 20753 type A22 or B3 are then machined or stamped from the plates and used to obtain information on the anisotropy. For the design of plastic parts, this will provide upper and lower bounds for the tensile properties. Investigation of the anisotropy of materials is a special procedure intended to provide guidance in the design of mouldings for end-use applications and is not intended as a quality control tool. In the injection moulding of thermoplastic materials, the flow of molten polymer can influence the orientation of fillers such as fibreglass or the orientation of polymer chains, resulting in anisotropic behaviour. For the purposes of this document, the flow direction is defined as the direction from the gate to the far end of the mould cavity and the cross direction as the direction perpendicular to the flow direction. The type F mould is not intended to replace the type D mould used to determine the moulding shrinkage of thermoplastics.
This document specifies a mould (designated the type F ISO mould) for the injection moulding of plates with a preferred size of 80 mm × 120 mm, and a preferred thickness of 2 mm for single-point and multi-point data acquisition. Suitable test specimens according to ISO 20753 type A22 or B3 are then machined or stamped from the plates and used to obtain information on the anisotropy. For the design of plastic parts, this will provide upper and lower bounds for the tensile properties. Investigation of the anisotropy of materials is a special procedure intended to provide guidance in the design of mouldings for end-use applications and is not intended as a quality control tool. In the injection moulding of thermoplastic materials, the flow of molten polymer can influence the orientation of fillers such as fibreglass or the orientation of polymer chains, resulting in anisotropic behaviour. For the purposes of this document, the flow direction is defined as the direction from the gate to the far end of the mould cavity and the cross direction as the direction perpendicular to the flow direction. The type F mould is not intended to replace the type D mould used to determine the moulding shrinkage of thermoplastics.
SIST EN ISO 294-5:2026 is classified under the following ICS (International Classification for Standards) categories: 83.080.20 - Thermoplastic materials. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 294-5:2026 has the following relationships with other standards: It is inter standard links to SIST EN 60695-2-13:2011, SIST EN 60695-10-2:2015, SIST EN IEC 63522-56:2025, SIST EN IEC 60695-2-13:2021, SIST EN 60695-11-10:2014, SIST EN IEC 60695-2-12:2022, SIST EN ISO 294-5:2018. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN ISO 294-5:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2026
Polimerni materiali - Vbrizgavanje plastomernih preskušancev - 5. del: Priprava
standardnih preskušancev za preiskovanje anizotropije (ISO 294-5:2026)
Plastics - Injection moulding of test specimens of thermoplastic materials - Part 5:
Preparation of standard specimens for investigating anisotropy (ISO 294-5:2026)
Kunststoffe - Spritzgießen von Probekörpern aus Thermoplasten - Teil 5: Herstellung
von Standardprobekörpern zur Ermittlung der Anisotropie (ISO 294-5:2026)
Plastiques - Moulage par injection des éprouvettes de matériaux thermoplastiques -
Partie 5: Préparation d'éprouvettes normalisées pour déterminer l'anisotropie (ISO 294-
5:2026)
Ta slovenski standard je istoveten z: EN ISO 294-5:2026
ICS:
83.080.20 Plastomeri Thermoplastic materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 294-5
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2026
EUROPÄISCHE NORM
ICS 83.080.20 Supersedes EN ISO 294-5:2017
English Version
Plastics - Injection moulding of test specimens of
thermoplastic materials - Part 5: Preparation of standard
specimens for investigating anisotropy (ISO 294-5:2026)
Plastiques - Moulage par injection des éprouvettes de Kunststoffe - Spritzgießen von Probekörpern aus
matériaux thermoplastiques - Partie 5: Préparation Thermoplasten - Teil 5: Herstellung von
d'éprouvettes normalisées pour déterminer Standardprobekörpern zur Ermittlung der Anisotropie
l'anisotropie (ISO 294-5:2026) (ISO 294-5:2026)
This European Standard was approved by CEN on 13 January 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 294-5:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 294-5:2026) 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 SIS.
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 July 2026, and conflicting national standards shall be
withdrawn at the latest by July 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 294-5:2017.
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 294-5:2026 has been approved by CEN as EN ISO 294-5:2026 without any modification.
International
Standard
ISO 294-5
Fourth edition
Plastics — Injection moulding of
2026-01
test specimens of thermoplastic
materials —
Part 5:
Preparation of standard specimens
for investigating anisotropy
Plastiques — Moulage par injection des éprouvettes de matériaux
thermoplastiques —
Partie 5: Préparation d'éprouvettes normalisées pour déterminer
l'anisotropie
Reference number
ISO 294-5:2026(en) © ISO 2026
ISO 294-5:2026(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
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Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 294-5:2026(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Apparatus . 2
4.1 Type F ISO mould .2
4.2 Injection-moulding machine .4
5 Procedure . 4
5.1 Conditioning of material .4
5.2 Injection moulding .4
5.3 Preparation of test specimen . .5
6 Report on test specimen preparation . 5
Annex A (normative) Preparation of test specimens . 6
iii
ISO 294-5:2026(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 61, Plastics, Subcommittee SC 9, Thermoplastic
materials, in collaboration with the European Committee for Standardization (CEN) Technical Committee
CEN/TC 249, Plastics, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
This fourth edition cancels and replaces the third edition (ISO 294-5:2017), which has been technically
revised.
The main changes are as follows:
— size 90 mm × 80 mm × 2 mm plates have been removed;
— the normative references have been updated.
A list of all parts in the ISO 294 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 294-5:2026(en)
Introduction
Reinforced and self-reinforcing injection-mouldable thermoplastics are used in a wide variety of applications,
some of which can be safety-related. During the injection-moulding process, reinforcement fibres can
preferentially align with the flow of the molten material and not across the flow direction. This preferential
alignment causes an imbalance in the properties of the moulded thermoplastic so that, in the flow direction,
the alignment of the reinforcing fibres causes a higher s
...
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