Plastics - Thermoset moulding compounds - Composites and reinforcement fibres - Preparation of specimens for determining the anisotropy of the properties of compression moulding composites

This European Standard specifies a method for the preparation of specimens of compression moulding composites for determining the anisotropy induced by material flow.
It is applicable to all SMC/BMC and GMT/LFT composites, which are being moulded under defined moulding conditions as described in EN ISO 12115 and ISO 1268-9.

Kunststoffe - Duroplast-Formmassen - Verbundwerkstoffe und Verstärkungsfasern - Herstellung von Probekörpern zur Bestimmung der Anisotropie der Eigenschaften von verpressten Formmassen

Diese Europäische Norm beschreibt eine Methode zur Herstellung von Probekörpern verpreßbarer Formmassen zur Bestimmung der durch Materialfluß hervorgerufenen Anisotropie. Sie ist für alle SMC- und GMT-Formmassen anwendbar, die unter definierten Preßbedingungen verpreßt werden, wie dies in den Normen EN ISO 12115 und CEN/WI 249254 (Teil 2 Normative Annex G) beschrieben ist.

Plastiques - Compositions de moulage thermodurs - Composites et fibres de renfort - Préparation des éprouvettes pour déterminer l'anisotropie des propriétés des composites de moulage par compression

La présente Norme européenne spécifie une méthode de préparation d'éprouvettes de composites de moulage par compression servant à déterminer l'anisotropie induite par l'écoulement du matériau.
Elle s'applique à tous les composites SMC/BMC et GMT/LFT moulés conformément aux conditions définies dans les normes EN ISO 12115 et ISO 1268-9.

Polimerni materiali – Duromerni materiali za oblikovanje – Kompoziti in ojačitvena vlakna – priprava vzorcev za določevanje anizotropije lastnosti kompozitov, pripravljenih s stiskanjem

General Information

Status
Published
Publication Date
31-Mar-2006
ICS
83.080.10 - Thermosetting materials
 
83.120 - Reinforced plastics
Technical Committee
IPMA - Polimer materials and products
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Apr-2006
Due Date
01-Apr-2006
Completion Date
01-Apr-2006
Ref Project
EN 13421:2006 - Plastics - Thermoset moulding compounds - Composites and reinforcement fibres - Preparation of specimens for determining the anisotropy of the properties of compression moulding composites

Overview

SIST EN 13421:2006 is a European Standard established by CEN that specifies the method for preparing specimens of thermoset compression moulding composites to assess the anisotropy of their properties. This standard applies to common fibre-reinforced plastics such as Sheet Moulding Compound (SMC), Bulk Moulding Compound (BMC), Glass Mat Thermoplastics (GMT), and Long Fibre Thermoplastics (LFT). It ensures that specimens are produced under consistent moulding conditions, enabling accurate evaluation of anisotropy caused by fibre orientation due to material flow during moulding.

The anisotropic behavior-where material properties vary depending on direction-is a critical factor in designing reliable composite components. SIST EN 13421:2006 complements standards like EN ISO 12115 and ISO 1268-9 by defining specimen preparation methods to deliver standardized, reproducible test results for compression moulded thermoset composites.

Key Topics

  • Specimen Preparation Method
    Specifies the machining and cutting procedures for extracting test specimens from compression moulded plates to evaluate property anisotropy induced by fibre flow during moulding.

  • Applicable Composite Types
    Applies to thermoset composites including SMC, BMC, GMT, and LFT materials, widely used in automotive, aerospace, and industrial applications.

  • Flow-induced Anisotropy
    Focuses on anisotropy caused by fibre orientation resulting from the directional flow of composite materials under compression moulding.

  • Reference to Moulding Conditions
    Ensures specimen consistency by requiring moulding plates be produced under defined conditions as per EN ISO 12115 and ISO 1268-9.

  • Test Plate Dimensions and Flow Areas
    Recommends standard compression moulded plates approximately 200 mm by 590 mm with designated flow areas (A and B) for specimen extraction.

  • Machining Specifications
    Follows EN ISO 2818 guidelines for preparation by machining, including cutting specimens parallel and perpendicular to the flow direction, with specific instructions on removing misaligned fibre regions.

  • Quality Control and Reporting
    Specifies documentation requirements including plate identification, specimen dimensions, number tested, rejection criteria, and additional influencing factors.

Applications

  • Material Characterization
    Provides essential data on anisotropic mechanical properties to inform engineering design and part optimization for fibre-reinforced thermoset composites.

  • Quality Assurance
    Enables manufacturers to verify and control the uniformity of fibre orientation and mechanical performance of compression moulded composite products.

  • Design Validation
    Assists product developers in evaluating how directional properties affect component strength, stiffness, and durability under operational stresses.

  • Research and Development
    Supports development of new composite formulations and moulding processes by providing reproducible test methods for anisotropy assessment.

  • Compliance Testing
    Facilitates conformity with European plastic material standards, supporting product certification and market acceptance.

Related Standards

  • EN ISO 12115
    Fibre-reinforced plastics - Determination of flowability, maturation, and shelf life of thermoset moulding compounds.

  • ISO 1268-9
    Methods of producing test plates for fibre-reinforced plastics - Part 9: Moulding of GMT/STC composites.

  • EN ISO 2818
    Plastics - Preparation of test specimens by machining.

  • EN ISO 527-4
    Plastics - Determination of tensile properties of isotropic and orthotropic fibre-reinforced plastic composites.

  • EN ISO 472
    Plastics - Vocabulary, defining terminology used in the field of plastics and composites.

Keywords: EN 13421, thermoset moulding compounds, compression moulding composites, anisotropy, fibre-reinforced plastics, SMC, BMC, GMT, LFT, specimen preparation, material flow, composite testing, fibre orientation, European standard, CEN, plastics standards.

Frequently Asked Questions

SIST EN 13421:2006 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Plastics - Thermoset moulding compounds - Composites and reinforcement fibres - Preparation of specimens for determining the anisotropy of the properties of compression moulding composites". This standard covers: This European Standard specifies a method for the preparation of specimens of compression moulding composites for determining the anisotropy induced by material flow. It is applicable to all SMC/BMC and GMT/LFT composites, which are being moulded under defined moulding conditions as described in EN ISO 12115 and ISO 1268-9.

This European Standard specifies a method for the preparation of specimens of compression moulding composites for determining the anisotropy induced by material flow. It is applicable to all SMC/BMC and GMT/LFT composites, which are being moulded under defined moulding conditions as described in EN ISO 12115 and ISO 1268-9.

SIST EN 13421:2006 is classified under the following ICS (International Classification for Standards) categories: 83.080.10 - Thermosetting materials; 83.120 - Reinforced plastics. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN 13421:2006 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-2006
3ROLPHUQLPDWHULDOL±'XURPHUQLPDWHULDOL]DREOLNRYDQMH±.RPSR]LWLLQRMDþLWYHQD
YODNQD±SULSUDYDY]RUFHY]DGRORþHYDQMHDQL]RWURSLMHODVWQRVWLNRPSR]LWRY
SULSUDYOMHQLKVVWLVNDQMHP
Plastics - Thermoset moulding compounds - Composites and reinforcement fibres -
Preparation of specimens for determining the anisotropy of the properties of compression
moulding composites
Kunststoffe - Duroplast-Formmassen - Verbundwerkstoffe und Verstärkungsfasern -
Herstellung von Probekörpern zur Bestimmung der Anisotropie der Eigenschaften von
verpressten Formmassen
Plastiques - Compositions de moulage thermodurs - Composites et fibres de renfort -
Préparation des éprouvettes pour déterminer l'anisotropie des propriétés des composites
de moulage par compression
Ta slovenski standard je istoveten z: EN 13421:2006
ICS:
83.080.10 Duromeri Thermosetting materials
83.120 2MDþDQLSROLPHUL Reinforced plastics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 13421
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2006
ICS 83.120
English Version
Plastics - Thermoset moulding compounds - Composites and
reinforcement fibres - Preparation of specimens for determining
the anisotropy of the properties of compression moulding
composites
Plastiques - Compositions de moulage thermodurs - Kunststoffe - Duroplast-Formmassen - Verbundwerkstoffe
Composites et fibres de renfort - Préparation des und Verstärkungsfasern - Herstellung von Probekörpern zur
éprouvettes pour déterminer l'anisotropie des propriétés Bestimmung der Anisotropie der Eigenschaften von
des composites de moulage par compression verpressten Formmassen
This European Standard was approved by CEN on 30 December 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13421:2006: E
worldwide for CEN national Members.

Contents
Page
Foreword. 3
Introduction . 4
1 Scope. 5
2 Normative references. 5
3 Terms and definitions . 5
4 Health and safety. 5
5 Principle. 6
6 Plate dimensions . 6
7 Procedure. 6
8 Manufacturing report . 6
9 Precision. 6
Bibliography . 8
Foreword
This European Standard (EN 13421:2006) has been prepared by Technical Committee CEN/TC 249 “Plastics”, the
secretariat of which is held by IBN/BIN.
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 August 2006, and conflicting national standards shall be withdrawn at the latest by
August 2006.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United
Kingdom.
Introduction
The main advantag
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

Loading comments...