SIST EN 13677-2:2003
(Main)Reinforced thermoplastic moulding compounds - Specification for GMT - Part 2: Methods of test and general requirements
- Abstract
1.1 This part of Enxxx describes the general requirements applicable to the specification of all types of glass mat reinforced polypropyl}ne composite sheet(GMT)falling within the scope of this specification as defined in Part 1 of the standard including the sampling procedures, packaging, storage and labelling requirements. 1.2 This part 2 describes the procedures to be followed in the preparation moulded plaques from which are cut the test specimens for the determination of mechanical properties as specified in Parts 1 and 3.
- Status
- Published
- Publication Date
- 30-Jun-2003
- Technical Committee
- IPMA - Polimer materials and products
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Jul-2003
- Due Date
- 01-Jul-2003
- Completion Date
- 01-Jul-2003
SIST EN 13677-2:2003 is the Slovenian adoption of EN 13677-2:2003 for reinforced thermoplastic moulding compounds specified as GMT. It covers the general requirements, sampling, plaque preparation and test methods used to verify glass mat reinforced polypropylene composite sheet for manufacturers, suppliers, customers and test laboratories.
What does SIST EN 13677-2:2003 specify?
SIST EN 13677-2:2003 specifies the general requirements for all types of glass mat reinforced polypropylene composite sheet (GMT) within the scope of the series. It also gives the procedures for preparing moulded test plaques and cutting test specimens, so that mechanical properties can be measured in a consistent way.
The standard is organized into clauses on scope, references, terms, general requirements, sampling, plaque preparation and a list of properties. It is followed by normative annexes A to H and one informative annex I.
| Annex | What it covers |
|---|---|
| A | Warpage of blanks |
| B | Rectangularity of blanks |
| C | Material temperature of GMT blanks before moulding test plaques |
| D | Blank weight and blank dimensions |
| E | Shrinkage after processing |
| F | Thermal processing stability |
| G | Flow induced anisotropy |
| H | Heating oven parameters for blanks used for test plaques |
| I | Definition of GMT production direction |
What are the key requirements of SIST EN 13677-2:2003?
SIST EN 13677-2:2003 sets practical requirements for supplied GMT blanks, lot sampling, moulding conditions, and the property list that must or may be specified. In practice, this means the standard is used both for release testing and for resolving disputes between customer and supplier.
General requirements and handling
Clause 4 requires the glass fibre reinforcement to be thoroughly impregnated with the polypropylene matrix, with no visible unimpregnated fibre bundles on the surface of an “as supplied” blank after heating to the moulding temperature. The standard also requires packed pallets suitable for forklift handling and road transport, and labels that identify the designation code, product type, production lot, pallet number, dimensions, and pallet weights.
Sampling and conformity
Clause 5 states that the manufacturer measures the properties of GMT once for each lot and documents them in a certificate of conformity. The certificate has to follow EN 10204, and additional tests may be included when agreed between customer and supplier. For quality issues, the standard gives defined sampling plans for blank dimensions and weight, fibre content and density, and mechanical re-testing from test plaques.
Preparing test plaques and specimens
Clause 6 describes how to make the moulded plaques used for mechanical testing. The plaque is prepared by compression flow moulding, with defined plaque thickness, blank stacking, blank temperature, mould temperature, pressure, timing and cooling. This matters because the measured properties depend strongly on moulding history, so the standard fixes the process before testing begins.
Clause 6.2 also controls where specimens are cut from the plaque and how they are machined. The centre region is used because the corners can show fibre orientation effects, and cutting methods such as CNC milling, sawing, or pre-cutting followed by milling are allowed if edge damage is controlled.
Property list and test methods
Clause 7 divides properties into those that shall be specified and those that may be specified by agreement. The required group includes blank dimensions and weight, glass fibre content, density, melting point, crystallisation temperature, processing shrinkage, tensile properties, impact strength, energy absorption, thermal expansion coefficient and heat deflection temperature. The optional group adds properties such as thermal processing stability, flowability measures, flexural and compressive properties, damping, water absorption, long term heat ageing, burning behaviour and electrical properties.
What terms does SIST EN 13677-2:2003 define?
SIST EN 13677-2:2003 uses the terms and definitions of EN ISO 472:2001 for plastics terminology. A few key terms are also used operationally in the document itself.
- GMT - glass mat reinforced polypropylene composite sheet, the material family covered by the standard.
- Blank - the supplied sheet or coil material used to make the test plaque or to be checked for geometry and weight.
- Test plaque - the compression moulded plaque made under Clause 6 and used to cut test specimens.
- Certificate of conformity - the document in which the measured lot properties are reported.
- Production direction - the direction of GMT production; Annex I defines 0° as parallel and 90° as crosswise or perpendicular.
- Flow induced anisotropy - the difference between tensile behaviour parallel and perpendicular to the mould flow direction, reported as a ratio in Annex G.
Who uses SIST EN 13677-2:2003?
SIST EN 13677-2:2003 is used by GMT manufacturers, customers, and test laboratories that need a common way to verify supplied material and compare results. It is also relevant for quality managers and buyers who need a certificate of conformity, lot-based sampling, and agreed methods for dispute resolution.
Which standards are used with SIST EN 13677-2:2003?
SIST EN 13677-2:2003 refers to EN 10204 for inspection documents, EN ISO 472 for plastics vocabulary, and EN ISO 1172, ISO 1183, ISO 2577, EN ISO 3146, EN ISO 75-2, EN ISO 179-2, EN ISO 527-2, EN ISO 527-4, EN ISO 6603-2 and EN ISO 11403-2 for the test methods and related measurements it uses. It also relies on Part 1 of EN 13677 for designation and Part 3 for specific requirements and the selection of properties.
What does the SIST EN 13677-2:2003 document contain?
SIST EN 13677-2:2003 contains the test and control framework for GMT, not just a property list. Clause 7 links each required or optional property to a method and specimen type, which makes the standard useful for specification writing and quality control planning.
The annexes provide the practical measurement procedures:
- Annex A and B describe geometric checks on blanks.
- Annex C explains how to measure material temperature inside heated blanks.
- Annex D covers blank weight and dimensions.
- Annex E covers processing shrinkage.
- Annex F gives the thermal processing stability test.
- Annex G gives the method for flow induced anisotropy.
- Annex H gives heating oven parameters for moulding test plaques.
- Annex I clarifies production direction for marking and specimen orientation.
Relations
- Refers
SIST ISO 2577:1996 - Plastics -- Thermosetting moulding materials -- Determination of shrinkage - Effective Date
- 25-Aug-2026
- Effective Date
- 25-Aug-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
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Frequently Asked Questions
SIST EN 13677-2:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Reinforced thermoplastic moulding compounds - Specification for GMT - Part 2: Methods of test and general requirements". This standard covers: 1.1 This part of Enxxx describes the general requirements applicable to the specification of all types of glass mat reinforced polypropyl}ne composite sheet(GMT)falling within the scope of this specification as defined in Part 1 of the standard including the sampling procedures, packaging, storage and labelling requirements. 1.2 This part 2 describes the procedures to be followed in the preparation moulded plaques from which are cut the test specimens for the determination of mechanical properties as specified in Parts 1 and 3.
1.1 This part of Enxxx describes the general requirements applicable to the specification of all types of glass mat reinforced polypropyl}ne composite sheet(GMT)falling within the scope of this specification as defined in Part 1 of the standard including the sampling procedures, packaging, storage and labelling requirements. 1.2 This part 2 describes the procedures to be followed in the preparation moulded plaques from which are cut the test specimens for the determination of mechanical properties as specified in Parts 1 and 3.
SIST EN 13677-2:2003 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.
SIST EN 13677-2:2003 has the following relationships with other standards: It is inter standard links to SIST ISO 2577:1996, SIST ISO 1183:1996, SIST EN ISO 1172:2023, SIST EN ISO 75-2:2013, SIST EN ISO 527-2:2025, SIST EN ISO 3146:2022, SIST EN ISO 11403-2:2022, SIST EN 13055-2:2004, SIST EN ISO 472:2002, SIST EN ISO 527-4:2023, SIST EN ISO 179-2:2020, SIST EN ISO 6603-2:2023, SIST EN 10204:2004, SIST EN 1473:2007, SIST EN ISO 13705:2007. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 13677-2:2003 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)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.WHYHVerstärkte Thermoplast-Formmassen - Spezifikation für GMT - Teil 2: Prüfverfahren und allgemeine AnforderungenPréimprégnés renforcés thermoplastiques - Spécifications des GMT - Partie 2: Méthodes d'essai et exigences généralesReinforced thermoplastic moulding compounds - Specification for GMT - Part 2: Methods of test and general requirements83.120Reinforced plasticsICS:Ta slovenski standard je istoveten z:EN 13677-2:2003SIST EN 13677-2:2003en01-julij-2003SIST EN 13677-2:2003SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13677-2February 2003ICS 83.120English versionReinforced thermoplastic moulding compounds - Specificationfor GMT - Part 2: Methods of test and general requirementsPréimprégnés renforcés thermoplastiques - Spécificationsdes GMT - Partie 2: Méthodes d'essai et exigencesgénéralesVerstärkte Thermoplast-Formmassen - Spezifikation fürGMT - Teil 2: Prüfverfahren und allgemeine AnforderungenThis European Standard was approved by CEN on 28 November 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13677-2:2003 ESIST EN 13677-2:2003
Procedure for determining the warpage of blanks.12A.1Principle.12A.2Apparatus.12A.3Procedure.12A.4Calculation and report of results.12Annex B (normative)
Procedure for determining the rectangularity of blanks.13B.1Principle.13B.2Apparatus.13B.3Procedure.13B.4Calculation and report of results.13Annex C (normative)
Procedure for determining the material temperature of GMT blanks prior tomoulding test plaques.14C.1General.14C.2Principle.14C.3Apparatus.14C.4Procedure.14C.5Calculation and report of results.14Annex D (normative)
Procedure for determining the blank weight and blank dimensions.15D.1Principle.15D.2Apparatus.15D.3Procedure.15D.4Calculation and presentation of results.15Annex E (normative)
Procedure for determining the shrinkage after processing.16E.1Principle.16E.2Apparatus.16E.3Procedure.16E.4Calculation and presentation of results.16Annex F (normative)
Procedure for determining the thermal processing stability.17F.1General.17F.2Principle.17F.3Apparatus.17F.4Procedure.17SIST EN 13677-2:2003
Procedure for determining the flow induced anisotropy.19G.1General.19G.2Principle.19G.3Apparatus.19G.4Procedure.19G.5Calculation and presentation of results.20Annex H (normative)
Parameters for heating ovens for blanks for moulding test tensile plaques.21Annex I (informative)
Definition of GMT production direction.22Biblioqraphy.23SIST EN 13677-2:2003
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