SIST EN 13421:2006
(Main)Plastics - Thermoset moulding compounds - Composites and reinforcement fibres - Preparation of specimens for determining the anisotropy of the properties of compression moulding composites
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
- 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
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
SIST EN 13421:2006 is a European standard developed by CEN that specifies procedures for the preparation of specimens from compression moulding composites. The standard focuses on determining the anisotropy of properties caused by material flow during the compression moulding process. Anisotropy refers to the directional dependence of material properties, which is a critical factor in the design and testing of fibre-reinforced plastics.
This standard is applicable to compression-moulded Sheet Moulding Compound (SMC), Bulk Moulding Compound (BMC), Glass Mat Thermoplastics (GMT), and Long Fibre Thermoplastics (LFT) composites. The procedures outlined are designed to ensure that test specimens represent the actual material behaviour under real-world manufacturing conditions. SIST EN 13421:2006 is relevant for all professionals involved in the production, testing, and quality assurance of thermoset and reinforced plastic mouldings.
Key Topics
- Preparation of Specimens: The standard details the cutting and machining procedures for obtaining test specimens from compression-moulded plates. It ensures the samples are representative of material flow-induced anisotropy.
- Applicable Materials: Covers all SMC, BMC, GMT, and LFT composites manufactured under defined conditions as described in EN ISO 12115 and ISO 1268-9.
- Moulding Conditions: Specifies that test specimens must be prepared from plates compression-moulded under standardized conditions to ensure reliable and comparable results across different laboratories and production batches.
- Measurement of Anisotropy: Focuses on extracting specimens both parallel and perpendicular to the direction of material flow, allowing for robust evaluation of directional property differences.
- Health and Safety: Highlights the obligation to comply with national safety regulations when handling composite materials and specimens.
- Reporting Requirements: Outlines the information that must be included in manufacturing test reports, such as identification, dates, specimen dimensions, and details about any rejected samples.
Applications
SIST EN 13421:2006 provides practical value in several areas of the plastics and composites industry:
- Product Development: Enables material engineers and designers to quantify anisotropic properties, improving design accuracy for load-bearing or stress-sensitive components.
- Quality Assurance: Supports consistent verification of composite properties, critical for compliance with contractual and regulatory requirements.
- Material Comparison: Facilitates benchmarking of different thermoset moulding compounds or processing technologies by providing a standardized testing method.
- Process Optimization: Data derived from anisotropy assessments help optimize moulding processes to achieve desired mechanical performance in final products.
- Regulatory Compliance: Conformance with SIST EN 13421:2006 can be required by clients or authorities for the supply of components in automotive, construction, or consumer goods sectors.
Related Standards
For comprehensive testing and production control, SIST EN 13421:2006 is used alongside other relevant international standards:
- EN ISO 12115: Thermosetting moulding compounds - Determination of flowability, maturation, and shelf life
- ISO 1268-9: Methods of producing test plates - Moulding of GMT/STC
- EN ISO 527-4: Determination of tensile properties of fibre-reinforced plastic composites
- EN ISO 2818: Preparation of test specimens by machining
- EN ISO 472: Plastics Vocabulary
Keywords
Thermoset moulding compounds, compression moulding composites, fibre-reinforced plastics, anisotropy determination, SMC, BMC, GMT, LFT, specimen preparation, CEN plastics standards, composite material testing, quality assurance in plastics.
By following SIST EN 13421:2006, manufacturers and laboratories can ensure accurate determination of anisotropic properties, leading to safer, more reliable composite products and streamlined industrial processes.
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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 has the following relationships with other standards: It is inter standard links to SIST EN ISO 527-4:2023, SIST EN ISO 2818:2019, SIST EN ISO 472:2014. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
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
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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
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