ISO INTERNATIONAL STANDARD 8503-3 Second edition 2012-02-15 Preparation of steel substrates before application of paints and related products Surface roughness characteristics of blast-cleaned steel substrates - Part 3: Method for the calibration of isO surface profile comparators and for the determination of surface profile Focusing microscope procedure Preparation des subjectiles d'acier avant application de peintures et de produits assimilés Caractéristiques de rugosite des subjectiles d'acierdecapés- Partie 3: Methode d'étalonnage des comparateurs viso-tactiles IsoO et de classification d'un profil de surface - Utilisation d'un microscope optique Reference number ISO 8503-3:2012(E) LSO @ ISO 2012 Copyright InternationalOrganizationfor Standardization nse from IHS Not for Resale ISO8503-3:2012(E) COPYRIGHTPROTECTEDDOCUMENT ISO2012 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 + 4122 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland @ ISO 2012 -All rights reserved No reproductic etworking permitted without license from IHS Not for Resale ISO 8503-3:2012(E) Contents Page Foreword ..iv Introduction 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Apparatus 2 6 Testsurfaces 2 6.1 Isosurfaceprofilecomparator 2 6.2 Blast-cleaned steel substrates/replica 7 Procedure for measurement of maximum peak-to-valley height. 2 8 Calculationandexpressionofresults ..3 9 Test report 3 Annex A (normative) Determination of backlash (play) in the microscope adjustment mechanism ... Annex B (normative) Test report for the calibration of IsO surface profile comparators and for the determination of surface profiles. Annex C (normative) Form for recording surface profile measurements made in accordance with this part of ISO 8503 .. Annex D (informative) Guidance notes for calibrating IsO surface profile comparators using a focusing microscope... 8 Annex E (informative) Guidance notes for the preparation and measurement of replicas 10 Bibliography ili nse from IHS Not for Resale