BS ISO BRITISH STANDARD 22963:2008 Titanium and titanium alloys Determination of oxygen Infrared method after fusion under inert gas ICS 77.120.50 BSi NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards BSISO22963:2008 National foreword This British Standard is the UK implementation of ISO 22963:2008. The UK participation in its preparation was entrusted to Technical Committee NFE/35, Light metals and their alloys. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was Amendments/corrigenda issued sincepublication published under the authority of the Standards Policy and Date Comments Strategy Committee on30May2008 BSI 2008 ISBN9780580576362 BSIS0 22963:2008 INTERNATIONAL ISO STANDARD 22963 First edition 2008-01-15 Titanium and titanium alloys - Determination of oxygen Infrared method after fusion under inert gas Titane et alliages de titane-Dosage de I'oxygene-Methode par infrarougeapresfusionsousgaz inerte Reference number ISO 22963:2008(E) ii BS ISO 22963:2008 Contents Page Foreword. iv 1 Scope.. 2 Principle... 3 Reagents... 1 4 Apparatus.. 2 5 Sample . 3 6 Procedure. 3 7 Precision... ili BSIS0 22963:2008 Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through isO non-governmental, in liaison_with isO, also take part in the work. iso collaborates closely with the InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2 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 rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 22963was prepared by Technical Committee ISO/TC 79, Light metal and their alloys, Subcommittee SC 11, Titanium. iv BS IS0 22963:2008 Titanium and titanium alloys Determination of oxygen - Infrared method after fusion under inert gas 1 Scope the mass fraction of oxygen in titanium and titanium alloys. The method is applicable to titanium and titanium alloys with a mass fraction of oxygen in the range from 0,02 % to 0,4 %. 2 Principle monoxide and swept by the inert gas stream into an infrared detector. Infrared absorption of the carbon monoxide or dioxide is measured, against a calibration curve made of titanium standard sample. 3 Reagents 3.1 General 3.2 Magnesium perchlorate, Mg(CIO4) 2 (commercial designation: anhydrone) This is used in the instrument to absorb water. Use the purity specified by the instrument manufacturer 3.3Sodium hydroxide on clay (commercial designation:ascarite) Used in some instruments to absorb carbon dioxide. Use purity specified by the instrument manufacturer. 3.4 Copperoxide Used in some instruments to oxidize carbon monoxide to carbon dioxide. Use the purity specified by the instrument manufacturer. 3.5 Helium or argon Use the purity and type (He or Ar) specified by the instrument manufacturer. 1