ISO INTERNATIONAL STANDARD 2507-1 First edition 1995-02-15 Thermoplastics pipes and fittings Vicat softening temperature Part 1: General test method ramollissementVicat Partie 1: Méthode génerale d'essai ISO Reference number ISO 2507-1:1995(E) from IHS Not for Resale ISO 2507-1:1995(E) 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. 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. International Standard ISO 2507-1 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee Sc 5, General properties of pipes, fittings and valves of plastic materials and their accessories --- Test methods and basic specifi- cations. This first edition of ISO 2507-1, and ISO 2507-2, cancels and replaces the second edition of ISO 2507 (ISO 2507:1982), of which it constitutes a technical revision. IsO 2507 consists of the following parts, under the general title Thermo- plastics pipes and fittings --- Vicat softening temperature: - Part 1: General test method Part 2: Test conditions for unplasticized poly(vinyl chloride) (PVC-U) or chlorinated poly(vinyi chloride) (PVC-C) pipes and fittings and for high impactresistancepoly(vinylchloride)(PvC-Hl)pipes Part 3: Test conditions for acrylonitrile/butadiene/styrene (ABS) and acrylonitrile/styrene/acrylic ester (ASA) pipes and fittings ISO 1995 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 microfim, without permission in writing from the publisher. International Organization for Standardization CasePostale56CH-1211Geneve20·Switzerland Printed in Switzerland ii Not fr Resale ISO ISO 2507-1:1995(E) Introduction This International Standard is based on isO 306. For convenience of use, it has been considered preferable to draw up a complete document for use in determining the Vicat softening tempera- iSO 306 is recommended. Please note, however, that isO 306 is applicable to materials in the form of sheets, whereas this International Standard is applicable to materials in the form of pipes and fittings. mined, the other two parts provide the particular requirements for con- ducting tests on pipes and fittings of different materials (see the Foreword). The basic specifications for various materials are given in the informative annexes of the appropriate parts. ii Copyrightltematinal Organizatin for Standardization No reproduction or networking permited without license from IHS Not for Resale