EN ISO 2439:2008
(Main)Flexible cellular polymeric materials - Determination of hardness (indentation technique) (ISO 2439:2008)
Flexible cellular polymeric materials - Determination of hardness (indentation technique) (ISO 2439:2008)
The indentation hardness of flexible cellular materials is a measure of their load-bearing properties. ISO 2439:2008 specifies four methods (A to D) for the determination of indentation hardness and one method (E) for determination of compressive deflection coefficient and hysteresis loss rate of flexible cellular materials. Annex A provides a summary of test parameters and typical force-indentation graphs obtained with these methods.
These five methods are applicable only to latex foam, urethane foam and PVC foam of the open-cell type. The methods specified can be used for testing finished articles and for the characterization of bulk material.
ISO 2439:2008 specifies the following methods:
Method A — Determination of the 40 %/30 s indentation hardness index, which gives a single indentation measurement for laboratory test purposes;
Method B — Determination of the 25 %-40 %-65 %/30 s indentation hardness characteristics, which provides information about the shape of the hardness indentation curve;
Method C — Determination of the 40 % indentation hardness check, which is a quick procedure suitable for quality control testing;
Method D — Determination of the 25 %/20 s low indentation hardness index, which is a quick procedure suitable as an inspection test;
Method E — Determination of the compressive deflection coefficient and hysteresis loss rate, which gives additional information about the load-bearing properties of materials.
The results obtained by these methods relate only to the test conditions specified and cannot, in general, be used directly for design purposes.
Weich-elastische polymere Schaumstoffe - Bestimmung der Härte (Eindruckverfahren) (ISO 2439:2008)
Die Eindruckhärte weich-elastischer Schaumstoffe ist ein Maß für deren Belastungseigenschaften. Diese Internationale Norm legt vier Verfahren (A bis D) zur Bestimmung der Eindruckhärte und ein Verfahren (E) zur Bestimmung des Druckverformungskoeffizienten und des Hystereseverlustes von weich-elastischen Schaum¬stoffen fest. Anhang A enthält eine Zusammenfassung von Prüfparametern und üblichen Kraft-Verformungs-Diagrammen die nach diesem Verfahren ermittelt wurden.
Diese fünf Verfahren sind nur auf Latex-, (Poly)urethanschaumstoffe und PVC Schaumstoffe des offenen Zell¬typs anwendbar. Die beschriebenen Verfahren können zur Prüfung von Fertigerzeugnissen und zur Charak¬terisierung von Blockmaterial einge¬setzt werden.
Diese Internationale Norm legt die folgenden Prüfverfahren fest:
a) Verfahren A — Bestimmung des Eindruckhärte-Index (40 %/30 s), das eine Einzelmessung der Ein¬drückung für Laborprüfungen liefert;
b) Verfahren B — Bestimmung der Eindruckhärte-Charakteristik (25 % 40 % 65 %/30 s), das Informationen über den Kurvenverlauf der Eindruckhärte liefert;
c) Verfahren C — Überprüfung der Eindruckhärte (40 %), das ein Schnellverfahren für die Qualitätskontrolle ist;
d) Verfahren D — Bestimmung des unteren Eindruckhärte-Index (25 %/20 s), das ein als Überprüfung geeignetes Schnellverfahren ist;.
e) Verfahren E — Bestimmung des Druckverformungskoeffizienten und des Hystereseverlustes, das zusätz¬liche Informationen über Belastungseigenschaften von Materialien liefert.
Die mit diesen Verfahren erhaltenen Ergebnisse beziehen sich nur auf die angegebenen Prüfbedingungen und können im Allgemeinen nicht ohne wWeiteres für konstruktive Zwecke angewendet werden.
Matériaux polymères alvéolaires souples - Détermination de la dureté (technique par indentation) (ISO 2439:2008)
La dureté par indentation des matériaux alvéolaires souples est une mesure des caractéristiques de portance. L'ISO 2439:2008 spécifie quatre méthodes de détermination (A à D) de la dureté par indentation et une méthode de détermination (E) du coefficient de fléchissement en compression et du taux de perte par hystérésis des matériaux alvéolaires souples. L'Annexe A fournit un récapitulatif des paramètres d'essai ainsi que des graphiques types force-indentation obtenus à l'aide de ces méthodes.
Ces cinq méthodes sont uniquement applicables à la mousse de latex, à la mousse d'uréthanne et à la mousse de PVC à alvéoles ouverts. Les méthodes spécifiées peuvent être utilisées pour les essais de produits finis et pour la caractérisation des matériaux bruts.
L'ISO 2439:2008 spécifie les méthodes suivantes:
Méthode A — Détermination de l'indice de dureté par indentation de 40 %/30 s, qui donne une simple mesure de l'indentation pour les essais en laboratoire;
Méthode B — Détermination des caractéristiques de dureté par indentation de 25 %-40 %-65 %/30 s, qui donne des informations sur la forme de la courbe de la dureté par indentation;
Méthode C — Contrôle pour la détermination de la dureté par indentation de 40 %, qui constitue un mode opératoire rapide adapté aux essais de contrôle de la qualité;
Méthode D — Détermination de l'indice de dureté par indentation faible de 25 %/20 s, qui constitue un mode opératoire rapide adapté aux essais de contrôle;
Méthode E — Détermination du coefficient de fléchissement en compression et du taux de perte par hystérésis, qui fournit des informations supplémentaires relatives aux caractéristiques de portance des matériaux.
Les résultats obtenus à l'aide de ces méthodes se rapportent uniquement aux conditions d'essai spécifiées et ne peuvent pas, en général, être utilisés pour la conception.
Penjeni polimerni materiali - Mehke pene - Ugotavljanje trdote (odpornost proti vtiskovanju) (ISO 2439:2008)
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Penjeni polimerni materiali - Mehke pene - Ugotavljanje trdote (odpornost proti vtiskovanju) (ISO 2439:2008)Weich-elastische polymere Schaumstoffe - Bestimmung der Härte (Eindruckverfahren) (ISO 2439:2008)Matériaux polymères alvéolaires souples - Détermination de la dureté (technique par indentation) (ISO 2439:2008)Flexible cellular polymeric materials - Determination of hardness (indentation technique) (ISO 2439:2008)83.100Penjeni polimeriCellular materialsICS:Ta slovenski standard je istoveten z:EN ISO 2439:2008SIST EN ISO 2439:2009en,fr,de01-maj-2009SIST EN ISO 2439:2009SLOVENSKI
STANDARDSIST EN ISO 2439:20011DGRPHãþD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN ISO 2439December 2008ICS 83.100Supersedes EN ISO 2439:2000
English VersionFlexible cellular polymeric materials - Determination of hardness(indentation technique) (ISO 2439:2008)Matériaux polymères alvéolaires souples - Déterminationde la dureté (technique par indentation) (ISO 2439:2008)Weich-elastische polymere Schaumstoffe - Bestimmungder Härte (Eindruckverfahren) (ISO 2439:2008)This European Standard was approved by CEN on 19 November 2008.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 CEN 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 2439:2008: ESIST EN ISO 2439:2009
Reference numberISO 2439:2008(E)© ISO 2008
INTERNATIONAL STANDARD ISO2439Fourth edition2008-12-15Flexible cellular polymeric materials — Determination of hardness (indentation technique) Matériaux polymères alvéolaires souples — Détermination de la dureté (technique par indentation)
ISO 2439:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
©
ISO 2008 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 • CH-1211 Geneva 20 Tel.
+ 41 22 749 01 11 Fax
+ 41 22 749 09 47 E-mail
copyright@iso.org Web
www.iso.org Published in Switzerland
ii © ISO 2008 – All rights reserved
ISO 2439:2008(E) © ISO 2008 – All rights reserved iiiContents Page Foreword.iv 1 Scope.1 2 Normative references.1 3 Terms and definitions.2 4 Principle.2 5 Apparatus.2 6 Test pieces.3 6.1 Shape and dimensions.3 6.2 Samples showing orientation.3 6.3 Conditioning.3 7 Procedure.3 7.1 General.3 7.2 Preliminary indentation for Methods A, B and C.4 7.3 Method A — Determination of the 40 %/30 s indentation hardness index.4 7.4 Method B — Determination of the 25 %-40 %-65 %/30 s indentation hardness characteristics.4 7.5 Method C — Determination of the 40 % indentation hardness check.5 7.6 Method D — Determination of the 25 %/20 s low indentation hardness index.5 7.7 Method E — Determination of the compressive deflection coefficient and hysteresis loss rate.5 8 Repeat tests.7 9 Test report.7 Annex A (informative)
Test method parameters and typical graphs.8 Annex B (informative)
Precision of Method E.12 Bibliography.14
ISO 2439:2008(E) iv © ISO 2008 – All rights reserved 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. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 2439 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses). This fourth edition cancels and replaces the third edition (ISO 2439:1997 and ISO 2439:1997/Cor.1:1998), which has been technically revised. Major modifications in this revised text are: a) change in Scope to cover five methods; b) inclusion of Figure 1 to illustrate the force-indentation curve; and c) inclusion of informative annexes.
INTERNATIONAL STANDARD ISO 2439:2008(E) © ISO 2008 – All rights reserved 1Flexible cellular polymeric materials — Determination of hardness (indentation technique) WARNING — Persons using this International Standard should be familiar with normal laboratory practice. This International Standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. 1 Scope The indentation hardness of flexible cellular materials is a measure of their load-bearing properties. This International Standard specifies four methods (A to D) for the determination of indentation hardness and one method (E) for determination of compressive deflection coefficient and hysteresis loss rate of flexible cellular materials. Annex A provides a summary of test parameters and typical force-indentation graphs obtained with these methods. These five methods are applicable only to latex foam, urethane foam and PVC foam of the open-cell type. The methods specified can be used for testing finished articles and for the characterization of bulk material. This International Standard specifies the following methods: a) Method A — Determination of the 40 %/30 s indentation hardness index, which gives a single indentation measurement for laboratory test purposes; b) Method B — Determination of the 25 %-40 %-65 %/30 s indentation hardness characteristics, which provides information about the shape of the hardness indentation curve; c) Method C — Determination of the 40 % indentation hardness check, which is a quick procedure suitable for quality control testing; d) Method D — Determination of the 25 %/20 s low indentation hardness index, which is a quick procedure suitable as an inspection test; e) Method E — Determination of the compressive deflection coefficient and hysteresis loss rate, which gives additional information about the load-bearing properties of materials. The results obtained by these methods relate only to the test conditions specified and cannot, in general, be used directly for design purposes. 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. ISO 1382, Rubber — Vocabulary SIST EN ISO 2439:2009
ISO 2439:2008(E) 2 © ISO 2008 – All rights reserved ISO 7500-1, Metallic materials — Verification of static uniaxial testing machines — Part 1: Tension/compression testing machines — Verification and calibration of the force-measuring system ISO 23529, Rubber — General procedures for preparing and conditioning test pieces for physical test methods 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 1382 and the following apply. 3.1 indentation hardness total force required to produce, under specified conditions, a specified indentation of a standard test piece NOTE Indentation hardness is expressed in newtons. 3.2 compressive deflection coefficient Sf ratio of the 65 % indentation force deflection to the 25 % indentation force deflection 3.3 hysteresis loss rate Af energy difference between the loading and unloading of a test piece under cyclic deformation NOTE Hysteresis loss rate is expressed as a percentage of the loading energy. 4 Principle The forces required to produce specified indentations under specified co
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.