General Information

Abstract

This part of EN 14598 specifies the methods of preparation of test specimens and the test methods to be used in
determining the properties of Sheet Moulding Compound (SMC) and Bulk Moulding Compound (BMC).
Requirements for handling test material and for conditioning both of the test material before moulding and of the
specimens before testing are found here.
Procedures and conditions for the preparation of test specimens and procedures for measuring properties of the
materials from which these specimens are made are given. Properties and test methods which are suitable and
necessary to characterize SMCs and BMCs are listed.
The properties have been selected from the general test methods in EN ISO 10350-2, Plastics - Acquisition and
presentation of comparable single-point data - Part 2 Long-fibre-reinforced plastics. Other test methods in wide
use for or of particular significance to these compression and injection moulding materials are also included in this
part of EN 14598, as are the designatory properties found in Part 1: Designation.
In order to obtain reproducible and comparable test results, it is necessary to use the methods of preparation and
conditioning, test-specimens with the dimensions and the test procedures specified herein. Values determined will
not necessarily be identical to those obtained using test-specimens of different dimensions or prepared using
different procedures.

Status
Published
Publication Date
26-Apr-2005
Withdrawal Date
30-Oct-2005
Technical Committee
CEN/TC 249 - Plastics
Current Stage
9093 - Decision to confirm - Review Enquiry
Start Date
23-Apr-2024
Completion Date
23-Sep-2026

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Overview

EN 14598-2:2005 (CEN) - Reinforced thermosetting moulding compounds: Methods of test and general requirements - defines how to prepare, condition and test Sheet Moulding Compound (SMC) and Bulk Moulding Compound (BMC) specimens so that material properties are reproducible and comparable. The part covers specimen preparation (injection and compression moulding), handling and conditioning of test material and specimens, and the list of designatory properties and standard test methods appropriate for SMCs and BMCs.

Key topics and technical requirements

  • Specimen preparation methods
    • Injection moulding in accordance with ISO 1268-10 / ISO 1268-11 (typical mould temperatures 130–180 °C; injection velocities and cure times within specified ranges).
    • Compression moulding per ISO 1268-8 (mould temperature and pressure ranges given; cure time to be stated and consistent).
    • Material kept in styrene-proof packaging until use; pre-treatment only when specified or per manufacturer recommendations.
  • Conditioning
    • Default conditioning (Method 1) per EN ISO 291: at least 16 h at (23 ± 2) °C and (50 ± 5) % RH before testing.
  • Measured properties
    • Mechanical: tensile modulus, stress at break, strain at break, tensile creep modulus, flexural modulus and strength, compressive modulus/strength, Charpy impact.
    • Thermal: temperature of deflection under load (HDT), coefficient of linear thermal expansion, dynamic mechanical properties.
    • Electrical, flammability and chemical resistance tests referenced via EN/ISO and IEC standards where applicable.
    • Properties selected from EN ISO 10350-2 and other widely used standards appropriate to compression/injection moulding compounds.
  • Reproducibility
    • Emphasis on using specified specimen dimensions, preparation conditions and test procedures to achieve comparable test results. Values may differ if other specimen sizes or methods are used.

Applications and users

  • Useful for:
    • Material manufacturers and compound formulators of SMC and BMC
    • Testing and certification laboratories performing material characterization
    • Product designers and engineers specifying molded thermosetting parts for automotive, electrical, construction and consumer applications
    • Procurement and quality assurance teams requiring standardized performance data
  • Practical value:
    • Enables consistent material comparisons and supplier specifications
    • Supports design decisions by providing standardized mechanical, thermal and flammability data for SMC/BMC materials

Related standards

  • Part of EN 14598 family (see Part 1: Designation; Part 3: Specific requirements)
  • References key standards such as EN ISO 10350-2, ISO 1268 series, EN ISO 291, EN ISO 527, EN ISO 14125, IEC and EN flammability/electrical test standards.

Keywords: EN 14598-2, SMC, BMC, test methods, specimen preparation, compression moulding, injection moulding, thermosetting moulding compounds, material characterization.

Relations

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Frequently Asked Questions

EN 14598-2:2005 is a standard published by the European Committee for Standardization (CEN). Its full title is "Reinforced thermosetting moulding compounds - Specification for Sheet Moulding Compound (SMC) and Bulk Moulding Compound (BMC) - Part 2: Methods of test and general requirements". This standard covers: This part of EN 14598 specifies the methods of preparation of test specimens and the test methods to be used in determining the properties of Sheet Moulding Compound (SMC) and Bulk Moulding Compound (BMC). Requirements for handling test material and for conditioning both of the test material before moulding and of the specimens before testing are found here. Procedures and conditions for the preparation of test specimens and procedures for measuring properties of the materials from which these specimens are made are given. Properties and test methods which are suitable and necessary to characterize SMCs and BMCs are listed. The properties have been selected from the general test methods in EN ISO 10350-2, Plastics - Acquisition and presentation of comparable single-point data - Part 2 Long-fibre-reinforced plastics. Other test methods in wide use for or of particular significance to these compression and injection moulding materials are also included in this part of EN 14598, as are the designatory properties found in Part 1: Designation. In order to obtain reproducible and comparable test results, it is necessary to use the methods of preparation and conditioning, test-specimens with the dimensions and the test procedures specified herein. Values determined will not necessarily be identical to those obtained using test-specimens of different dimensions or prepared using different procedures.

This part of EN 14598 specifies the methods of preparation of test specimens and the test methods to be used in determining the properties of Sheet Moulding Compound (SMC) and Bulk Moulding Compound (BMC). Requirements for handling test material and for conditioning both of the test material before moulding and of the specimens before testing are found here. Procedures and conditions for the preparation of test specimens and procedures for measuring properties of the materials from which these specimens are made are given. Properties and test methods which are suitable and necessary to characterize SMCs and BMCs are listed. The properties have been selected from the general test methods in EN ISO 10350-2, Plastics - Acquisition and presentation of comparable single-point data - Part 2 Long-fibre-reinforced plastics. Other test methods in wide use for or of particular significance to these compression and injection moulding materials are also included in this part of EN 14598, as are the designatory properties found in Part 1: Designation. In order to obtain reproducible and comparable test results, it is necessary to use the methods of preparation and conditioning, test-specimens with the dimensions and the test procedures specified herein. Values determined will not necessarily be identical to those obtained using test-specimens of different dimensions or prepared using different procedures.

EN 14598-2:2005 is classified under the following ICS (International Classification for Standards) categories: 83.120 - Reinforced plastics. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 14598-2:2005 has the following relationships with other standards: It is inter standard links to ISO 11359-2:1999, ISO 3795:1989, ISO 1268-10:2005, ISO 1268-11:2005, ISO 2577:1984, ISO 1268-8:2004, EN ISO 1183-2:2026, EN ISO 179-1:2026, EN IEC 60296:2020, EN 60707:1999, ISO 7942:1985/Amd 1:1991, EN 60243-1:2013, EN 60695-11-20:2015, EN 60695-11-10:2013, EN ISO 3167:2014. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN 14598-2:2005 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-julij-2005
2MDþHQHGXURPHUQHPDVH]DREOLNRYDQMH6SHFLILNDFLMD]DREOLNRYDOQHPDVHY
SORãþDK 60& LQREOLNRYDOQHPDVHYWHVWDVWHPVWDQMX %0& GHO3UHVNXVQH
PHWRGHLQVSORãQH]DKWHYH
Reinforced thermosetting moulding compounds - Specification for Sheet Moulding
Compound (SMC) and Bulk Moulding Compound (BMC) - Part 2: Methods of test and
general requirements
Verstärkte härtbare Formmassen - Spezifikation für Harzmatten (SMC) und
faserverstärkte Pressmassen (BMC) - Teil 2: Prüfverfahren und allgemeine
Anforderungen
Mélanges a mouler themodurcissables renforcés - Spécification pour mats préimprégnés
(SMC) et mélanges a mouler en masse (BMC) - Partie 2 : Méthodes d'essai et exigences
générales
Ta slovenski standard je istoveten z: EN 14598-2:2005
ICS:
83.120 2MDþDQLSROLPHUL Reinforced plastics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 14598-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2005
ICS 83.120
English version
Reinforced thermosetting moulding compounds - Specification
for Sheet Moulding Compound (SMC) and Bulk Moulding
Compound (BMC) - Part 2: Methods of test and general
requirements
Mélanges à mouler themodurcissables renforcés - Verstärkte härtbare Formmassen - Spezifikation für
Spécification pour mats préimprégnés (SMC) et mélanges Harzmatten (SMC) und faserverstärkte Pressmassen
à mouler en masse (BMC) - Partie 2 : Méthodes d'essai et (BMC) - Teil 2: Prüfverfahren und allgemeine
exigences générales Anforderungen
This European Standard was approved by CEN on 21 February 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, 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
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14598-2:2005: E
worldwide for CEN national Members.

Contents
Page
Foreword.3
1 Scope.4
2 Normative references.4
3 Terms and definitions .6
4 Preparation of test specimens .6
4.1 General.6
4.2 Pre-treatment of the material.6
4.3 Injection moulding.6
4.4 Compression moulding.7
5 Conditioning of test specimens .8
6 Determination of properties.8
Bibliography .15

Foreword
This document (EN 14598-2:2005) has been prepared by Technical Committee CEN/TC 249 “Plastics”, the
secretariat of which is held by IBN.
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 October 2005, and conflicting national standards shall be withdrawn at the latest
by October 2005.
EN 14598 consists of the following parts, under the general title Reinforced thermosetting moulding compounds –
Specification for Sheet Moulding Compound (SMC) and Bulk Moulding Compound (BMC)
 Part 1: Designation
 Part 2: Methods of test and general requirements
 Part 3, Specific requirements
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, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
1 Scope
This part of EN 14598 specifies the methods of preparation of test specimens and the test methods to be used in
determining the properties of Sheet Moulding Compound (SMC) and Bulk Moulding Compound (BMC).
Requirements for handling test material and for conditioning both of the test material before moulding and of the
specimens before testing are found here.
Procedures and conditions for the preparation of test specimens and procedures for measuring properties of the
materials from which these specimens are made are given. Properties and test methods which are suitable and
necessary to characterize SMCs and BMCs are listed.
The properties have been selected from the general test methods in EN ISO 10350-2, Plastics - Acquisition and
presentation of comparable single-point data – Part 2 Long-fibre-reinforced plastics. Other test methods in wide
use for or of particular significance to these compression and injection moulding materials are also included in this
part of EN 14598, as are the designatory properties found in Part 1: Designation and basis for specifications.
In order to obtain reproducible and comparable test results, it is necessary to use the methods of preparation and
conditioning, test-specimens with the dimensions and the test procedures specified herein. Values determined will
not necessarily be identical to those obtained using test-specimens of different dimensions or prepared using
different procedures.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references,
only the edition cited applies. For undated references, the latest edition of the referenced document (including any
amendments) applies.
EN 60112, Method for determination of the proof and the comparative tracking indices of solid insulating materials
(IEC 60112:2003)
EN 60243-1, Electric strength of insulating materials – Test methods - Part 1: Tests at power frequencies (IEC
60243-1:1998)
EN 60296, Fluids for electrotechnical applications - Unused mineral insulating oils for transformers and switchgears
(IEC 60269:2003)
EN 60695-11-10, Fire hazard testing – Part 11-10: Test flames – 50 W horizontal and vertical flame test methods
(IEC 60695-11-10:1999)
EN 60695-11-20, Fire hazard testing – Part 11-20: Test flames – 500 W flame test methods (IEC 60695-11-
20:1999)
EN 60707, Flammability of solid non-metallic materials when exposed to flame sources – List of test methods (IEC
60707:1999)
EN ISO 62, Plastics - Determination of water absorption (ISO 62:1999)
EN ISO 75-2, Plastics - Determination of temperature of deflection under load - Part 2: Plastics, ebonite and long-
fibre-reinforced composites (ISO 75-2:2004)
EN ISO 175, Plastics – Methods of test for the determination of the effects of immersion in liquid chemicals (ISO
175:1999)
EN ISO 179-1, Plastics - Determination of Charpy impact properties - Part 1: Non-instrumented impact test (ISO
179-1:2000)
EN ISO 179-2, Plastics - Determination of Charpy impact properties – Part 2: Instrumented impact test (ISO 179-
2:1997)
EN ISO 291, Plastics - Standard atmospheres for conditioning and testing (ISO 291:1997)
EN ISO 295, Plastics - Compression moulding of test specimens of thermosetting materials (ISO 295:2004)
EN ISO 527-1, Plastics - Determination of tensile properties – Part 1: General principles (ISO 527-1:1993 including
Corr 1:1994)
EN ISO 527-4, Plastics - Determination of tensile properties - Part 4: Test conditions for isotropic and orthotopic
fibre-reinforced plastic composites (ISO 527-4:1997)
EN ISO 899-1, Plastics - Determination of creep behaviour - Part 1: Tensile creep (ISO 899-1:2003)
EN ISO 1172, Textile-glass-reinforced plastics - Prepregs, moulding compounds and laminates - Determination of
the textile-glass and mineral-filler content - Calcination methods (ISO 1172:1996)
EN ISO 1183 (all parts), Plastics - Methods for determining the density of non-cellular plastics
EN ISO 3167, Plastics - Multipurpose test specimens (ISO 3167:2002)
EN ISO 4589-2, Plastics - Determination of burning behaviour by oxygen index – Part 2: Ambient temperature test
(ISO 4589-2:1996)
EN ISO 6721-1, Plastics - Determination of dynamic mechanical properties – Part 1: General principles (ISO 6721-
1:2001)
EN ISO 6721-2, Plastics – Determination of dynamic mechanical properties – Part 2: Torsion pendulum method
(ISO 6721-2:1994, including Technical Corrigendum 1:1995)
EN ISO 10350-2, Plastics - Acquisition and presentation of comparable single-point data – Part 2: Long-fibre-
reinforced plastics (ISO 10350-2:2001)
EN ISO 11667, Fibre-reinforced plastics – Moulding compounds and prepregs - Determination of resin,
reinforced-fibre and mineral-filler content - Dissolution methods (ISO 11667:1997)
EN ISO 12114, Fibre-reinforced plastics - Thermosetting moulding compounds and prepregs - Determination of
cure characteristics (ISO 12114:1997)
EN ISO 12115, Fibre-reinforced plastics -Thermosetting moulding compounds and prepregs - Determination of
flowability, maturation and shelf life (ISO 12115:1997)
EN ISO 14125, Fibre reinforced plastic composites – Determination of flexural properties (ISO 14125:1998)
EN ISO 14126, Fibre reinforced plastic composites - Determination of compressive properties in the in-plane
direction (ISO 14126:1999)
ISO 1268-8, Fibre-reinforced plastics – Methods of producing test plates - Part 8: Compression moulding of SMC,
BMC
ISO 1268-10, Fibre-reinforced plastics - Methods of producing test plates - Part 10: Injection moulding of BMC and
other long-fibre moulding compounds - General principles and moulding of multipurpose test specimens
ISO 1268-11, Fibre-reinforced plastics - Methods of producing test plates - Part 11: Injection moulding of BMC and
other long-fibre moulding compounds - Small plates
ISO 2577, Plastics - Thermosetting moulding materials - Determination of shrinkage
ISO 3795, Road vehicles, and tractors and machinery for agriculture and forestry - Determination of burning
behaviour of interior materials

ISO 11359-2, Plastics - Thermomechanical analysis (TMA) – Part 2: Determination of coefficient of linear thermal
expansion and glass transition temperature
IEC 60093, Methods of test for volume resistivity and surface resistivity of solid electrical in
...