ISO INTERNATIONAL STANDARD 28706-4 Third edition 2016-01-15 Vitreous and porcelain enamels - Determination of resistance to chemical corrosion - Part 4: Determination of resistance to chemical corrosion by alkaline liquids using a cylindrical vessel EmauxvitrifiésDétermination dela resistancea la corrosion chimique Partie 4: Determination de la resistance a la corrosion chimique par des liquides alcalins dans un recipient cylindrique Reference number IS0 28706-4:2016(E) LSO Intemational Organization for Standardization @IS02016 STANDARDIZATION C1 5956617 Dut license from IHS IS028706-4:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS02016,Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISOcopyrightoffice Ch. de Blandonnet 8.CP 401 CH-1214 Vernier, Geneva, Switzerland Tel.+4122749 0111 Fax+41227490947 [email protected] www.iso.org Licensee-ZHEJIANG INST OF STANDARDIZoISQ0d6-All rights reserved networking permited without license from IHS Not for Resale, 2016/3/29 02:56:28 IS028706-4:2016(E) Contents Page Foreword ..iv Introduction.. ... 1 Scope.. 2 Normativereferences ... 3 Principle 4 Reagents. 5 Apparatus and material .2 6 Test specimens. .7 7 Procedure .7 8 Expression of results .8 8.1 Total loss in mass per unit area .8 8.2 Corrosionrate .8 9 Hot o,1 mol/l sodium hydroxidetest .9 9.1 General .9 9.2 Test solution, c(NaOH) = 0,1 mol/l .9 9.3 Test temperature. .9 9.4 Duration of the test 9 9.5 Test report. 9 10 Hot 1,omol/l sodium hydroxidetest .10 10.1 General. .10 10.2 Test solution, c(NaOH) = 1,0 mol/1 .10 10.3 Test temperature. .10 10.4 Duration of the test .10 10.5 Test report.. ..10 11 Other test solutions ..11 11.1 General .11 11.2 Test solution 11 11.3 Test temperature .11 11.4 Duration ofthetest .11 11.5 Testreport. ..11 Bibliography .12 iii icensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ithoutlicense from IHS