ISO INTERNATIONAL STANDARD 9940 First edition 2015-08-01 Aerospace series Fluid, hydraulic phosphate ester-base, fire resistant - Technical specification Série aérospatiale - Fluide, hydraulique, esters phosphoriques, résistant au feu-Spécification technique Reference number ISO 9940:2015(E) ISO International Organization for Standardization @ IS0 2015 Institute of Sta dardization5956617 vided by IHS underI itted without license from IHS IS0 9940:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS02015,PublishedinSwitzerland 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. 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 Intenationaibr Prganization for Standardization etworking permitted without license from IHS IS0 9940:2015(E) Contents Page Foreword ..V 1 Scope .1 2 Normative references 3 Technical requirements. 3.1 General .3 3.2 Fluid types. 3.3 Physical and chemical properties ..3 3.4 Products and manufacturers qualification 3.5 Approved laboratories. 4 4 Qualification requirements .5 4.1 Absolute kinematic viscosity"v" ..5 4.2 Water content "[H20]" .6 4.3 Density“p" .6 4.4 Acidity index"AP" -Acid number“AN" ..6 4.5 Electrical conductivity“y .6 4.6 Chemical content 4.6.1 Chlorine .7 4.6.2 Other components 4.7 Pour point temperature. 7 4.8 Flash point and fire point temperatures ..8 4.9 Auto-ignition temperature. .8 4.10 Flammability test .8 4.10.1 Determination of wick flame persistence .8 4.10.2 Spray ignition test .8 4.10.3 Manifold-Ignition test on a hot element. 4.11 Colour Condition. .9 4.12 Bulk modulus (Isothermal secant) 4.13 Thermal expansion coefficient“α" .11 4.14 Dielectric resistance. .11 4.15 Specific heat "Cp" ..11 4.16 Solid particulate contamination. .11 4.16.1 General .11 4.16.2 Particle counting .11 4.16.3 Filterability“F" .12 4.17 Foaming. .12 4.18 Toxicity. ..12 4.19 Stability .13 4.19.1 Shear stability .13 4.19.2 Thermal, corrosion and oxidation stability ..13 4.20 In-service lifetime. ..15 4.20.1 General. ..15 4.20.2 Ampoule test method. ..16 4.20.3 “1 Litre-Container" Test method for fire resistance requirement in accordance with 4.8 .18 4.21 Material compatibility with qualified fluids (see list provided by the airframe manufacturer) ..18 4.21.1 Compatibility with qualified fluids .18 4.21.2 Compatibility with elastomeric materials 19 4.21.3 Compatibility with paints. 20 4.21.4 Compatibility with electrical aircraft components 20 4.21.5 Compatibility with structural elements: adhesive, metallic parts (including tubes), composites.. 20 4.22 Lubrication 20 iii censee=Zhejiang Institute of Standardization 5956617 ed without license from IHS Not for Resale, 2015/11/11 06:44:30