ISO INTERNATIONAL STANDARD 10713 First edition 1992-11-15 Jewellery Gold alloy coatings Joaillerie - Revetements d'alliages d'or Reference number ISO10713:1992(E) itted without license from IHS No reproductic Not for Resale ISO 10713:1992(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 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 a vote. International Standard ISO 10713 was prepared by Technical Committee ISO/TC 174, Jewellery. C ISO1992 All rights reserved. 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 per- mission in writing from the publisher. International Organization for Standardization Case Postale 56 · CH-1211 Geneve 20 · Switzerland Printed in Switzerland Not for Resale ted without license from IHS INTERNATIONAL STANDARD ISO 10713:1992(E) Jewellery - Gold alloy coatings This coating requirement may also be defined Scope NOTE 1 by the fine gold content related to the total mass of the ar- ticle. The fine gold content defined in this way is custom- This International Standard specifies the coating arily indicated in the jewellery trade in "millieme". In this thickness requirements and the gold fineness of the case, the conformity of the coating with the requirements coating. It also defines current terms concerning gold nastobecalculatedusingthemassofthearticle.thevalue alloy coatings. expressed in millieme, the surface area and the density of fine gold. However, to conform with this International It is not applicable to watch bracelets if they are per- Standard, the coating, defined in millieme, has to be at least manently attached to the case. equivaient to the thickness indicated in table 1. 4 Measurement of coating thickness 2 Normative references The thickness measurement is not related to any The following standards contain provisions which, particular part of a plated article, but to the overall through reference in this text, constitute provisions of this International Standard. At the time of publica- quantity of fine gold necessary to produce the re- quired thickness over the total surface area of the ar- tion, the editions indicated were valid. All standards ticle. are subject to revision, and parties to agreements to investigate the possibility of applying the most re- 4.1 Basic method (destructive method) cent editions of the standards indicated below Members of IEC and ISO maintain registers of cur- For arbitration,thedissolutionmethod and chemical rently valid International Standards. analysis shall be used. The average thickness has to be calculated using the fine gold content, the density IsO 3160-2:1982. Watch cases and accessories of fine gold and the surface area. Gold alloy coverings Part 2: Determination of fineness,thickness andcorrosionresistance. For details of the dissolution method and chemical analysis see IsO 3160-2. ISO 3497:1990, Metallic coatings - - Measurement of coating thickness --- X-ray spectrometric methods. 4.2 Secondary methods (non-destructive methods) Iso 3543:1981, Metallic and non-metallic coatings Measurement of thickness Beta backscatter On agreement between the manufacturer and pur- method. chaser, the following methods may be used: ISsO 9220:1988, Metallic coatings - Measurement of a) beta backscatter method according to ISO 3543; coating thickne