ISO INTERNATIONAL STANDARD 8401 Second edition 2017-02 Metallic coatings Review of methods of measurement of ductility Revetements métalliques - Vue d'ensemble sur les méthodes de mesurage de la ductilite Reference number IS0 8401:2017(E) International Organization for Standardization @ IS0 2017 Not for Resale, 2017/5/11 02:27:30 see=ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS under I No reproduction or networking permitted without license from IHS IS0 8401:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Licensee-ZHEJIANG INST OF STANDARDIZAISQ 07 - All rights reserved Not for Resale, 2017/5/11 02:27:30 networking permited without license from IHS IS0 8401:2017(E) Contents Page Foreword ..V 1 Scope .1 2 Normative references 3 Terms and definitions 4 Principle ..2 5 Tests on unsupported foils .3 5.1 General .3 5.2 Tensile testing. ..4 5.2.1 Principle. .4 5.2.2 Apparatus. 5.2.3 Preparation of test pieces 4 5.2.4 Procedure. ..6 5.2.5 Expression of results. .6 5.2.6 Notes on procedure ..6 5.3 Bending (micrometer bend test) .7 5.3.1 General. .7 5.3.2 Apparatus. .7 5.3.3 Preparation of test pieces .1 5.3.4 Procedure.. 1 5.3.5 Expression of results ..8 5.4 Folding (vice-bend test) 10 5.4.1 General. .10 5.4.2 Apparatus. .10 5.4.3 Preparation of test pieces ..10 5.4.4 Procedure ..10 5.4.5 Results. ..10 5.5 Hydraulic bulging. .11 5.5.1 General. 5.5.2 Principle .11 5.5.3 Apparatus. 11 5.5.4 Procedure .12 5.5.5 Expression of results .13 5.5.6 Notes on procedure ..13 5.6 Mechanical bulging. .13 ..13 5.6.1 General. 5.6.2 Apparatus .14 5.6.3 Procedure. .14 5.6.4 Expression of results ..15 5.6.5 Special cases ..15 6 Tests on coatings on substrates ..17 6.1 General .17 6.2 Tensile testing. ..18 6.2.1 Apparatus. .18 6.2.2 Preparation of test pieces. .18 6.2.3 Procedure ..18 6.3 Three-point bending[10] 19 6.3.1 Principle. ..19 6.3.2 Apparatus. .19 6.3.3 Procedure. ..19 6.3.4 Expression of results 20 6.4 Four-point bending[11] 21 6.4.1 General. .21 iii icensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 d without license from IHS Not for Resale, 2017/5/11 02:27:30