ISO INTERNATIONAL STANDARD 22538-2 First edition 2007-09-01 Space systems Oxygen safety - Part 2: Selection of metallic materials for oxygen systems and components Systemes spatiaux Séecurité des systemes d'oxygene Partie 2: Sélection des materiaux métalliques pour les systemes d'oxygene et leurs composants Reference number ISO 22538-2:2007(E) @ ISO 2007 y IHS under ted without license from IHS Not for Resale ISO 22538-2:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The IsO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT @ISO2007 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, 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 + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ IS0 2007 - All rights reserved py IHS unde I without license from IHS Not for Resale ISO 22538-2:2007(E) Contents Page Foreword. Introduction 1 Scope 2 Normative references 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions... 3.2 Abbreviated terms 4 General. 4.1 Overview.... 4.2 Background 4.3 Design considerations. 4.4 Materials certification .... 4.5 Materials control... 5 Ignition mechanisms 5.1 General. 5.2 Ignition conditions. 5.3 Materials tests........ 5.4 Ignitionfactors... 5.5 Ignition mechanisms and sources..... 6 Metallic materials .. 6.1 Nickel and nickel alloys 6.2 Copper and copper alloys.. 6.3 Stainless steels .. 6.4 Aluminium and aluminium alloys.. 6.5 6.6 Other metals and alloys 7 Component housings, 10 8 Configuration testing. 10 Annex A (informative) List of materials. 11 Bibliography 15 Copyrght International Organizaionrsandardizalonghts reserved ii Not for Resale ISO22538-2:2007(E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies echnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeer non-governmental, in liaison with isO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2 The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 22538-2 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee sc 14, Space systems and operations. Part 1: Design of oxygen systems and components Part 2: Selection of metallic materials for oxygen systems and components Part 3: Selection of non-metallic materials for oxygen syste