FINAL INTERNATIONAL ISO/FDIS DRAFT STANDARD 6072 ISO/TC45/SC4 Rubber Compatibility between hydraulic Secretariat:DSM fluids and standard elastomeric materials Voting begins on: 2011-09-01 Caoutchouc Compatibilite des fluides hydrauliques avec les Voting terminates on: materiaux élastomeres de réference 2011-11-01 RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEYARE AWARE ANDTOPROVIDESUPPOR TING DOCUMENTATION. INADDITIONTOTHEIREVALUATIONAS Reference number BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO- LOGICAL, COMMERCIAL AND USER PURPOSES ISO/FDIS 6072:2011(E) DRAFT INTERNATIONAL STANDARDS MAY ON ISO OCCASION HAVE TO BE CONSIDERED INTHE LIGHT OF·THEIR POTENTIAL TO BECOME STAN- ISO2011 by IHS unde without license from IHS Not for Resale ISO/FDIS 6072:2011(E) Copyright notice stored in a retrieval system or transmitted in any form or by any means, electronic, photocopying, recording or otherwise, without prior written permission being secured. 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 + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Reproduction may be subject to royalty payments or a licensing agreement. Violators may be prosecuted IsO 2011-All rights reserved etworking permitted without license from IHS Not for Resale ISO/FDIS 6072:2011(E) Contents Page Foreword Introduction 1 Scope 2 Normative references 3 Terms and definitions .2 4 Test elastomers 4.1 General. 2 4.2 Standard acrylonitrile-butadiene rubber with 28 % acrylonitrile content (NBR 1) 4.3 Standard acrylonitrile-butadiene rubber with 34 % acrylonitrile content (NBR 2) 4.4 Standard fluorocarbon rubber (FKM 2).. 5 4.5 Standard peroxide-vulcanized ethylene propylene diene rubber (EPDM 1) 4.6 Standard hydrogenated acrylonitrile-butadiene rubber with 35 % acrylonitrile content (HNBR 1). 8 5 Designation system for the elastomer compatibility index (Ecl). 10 6 Determination of the ECl. .10 6.1 Test conditions. 10 6.2 Change in volume 12 6.3 Change in hardness. .14 6.4 Change in tensile strength and elongation at break. 14 7 Test report. 15 8 Identificationstatement(referencetothis International Standard). Annex A (informative) Further information on hydraulic fluids and the types of elastomer used with them... .17 Annex B (informative) Example of test report - Fluid-elastomer compatibility index (Ecl). ...19 Annex C (informative) Rapid method for indicating, by measuring the volume change index (vcl), the change in volume of commercial rubbers when treated with mineral-based oils... .20 Bibliography. 22 ii license from IHS Not for Resale