ASTM_D_2532_-_17.pdf

Designation:D253217Standard Test Method forViscosity and Viscosity Change After Standing at LowTemperature of Aircraft Turbine Lubricants1This standard is issued under the fixed designation D2532;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method covers the determination of the kine-matic viscosity of aircraft turbine lubricants at lowtemperature,and the percent change of viscosity after a 3 h anda 72 h standing period at low temperature.1.1.1 The range of kinematic viscosities covered by this testmethod is from 7700 mm2/s to 14 000 mm2/s at 40 C andfrom 7000 mm2/s to 17 500 mm2/s at 51 C.The precisionhas only been determined for those materials,kinematicviscosity ranges,and temperatures as shown in the precisionsection.Kinematic viscosities and percent change of viscositymay be measured and reported at other temperatures and otherthermal soak period intervals as agreed by the contractingparties.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.2.1 The SI unit used in this test method for KinematicViscosity is mm2/s.For user reference,1 mm2/s=10-6m2/s=1 cSt.1.3 WarningMercury has been designated by many regu-latory agencies as a hazardous material that can cause centralnervous system,kidney and liver damage.Mercury,or itsvapor,may be hazardous to health and corrosive to materials.Caution should be taken when handling mercury and mercurycontaining products.See the applicable product MaterialSafety Data Sheet(MSDS)for details and EPAs websitehttp:/www.epa.gov/mercury/faq.htmfor additional informa-tion.Users should be aware that selling mercury and/ormercury containing products into your state or country may beprohibited by law.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.For specific hazardstatements,see Section 7.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids(and Calculation of Dynamic Viscos-ity)D446 Specifications and Operating Instructions for GlassCapillary Kinematic ViscometersD6300 Practice for Determination of Precision and BiasData for Use in Test Methods for Petroleum Products andLubricantsE1 Specification for ASTM Liquid-in-Glass ThermometersE563 Practice for Preparation and Use of an Ice-Point Bathas a Reference TemperatureE644 Test Methods for Testing Industrial Resistance Ther-mometersE1137 Specification for Industrial Platinum Resistance Ther-mometersE1750 Guide for Use of Water Triple Point CellsE2593 Guide for Accuracy Verification of Industrial Plati-num Resistance ThermometersE2877 Guide for Digital Contact Thermometers2.2 Other Documents:MIL-PRF-7808 Lubricating Oil,Aircraft Turbine Engine,Synthetic Base31This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.07 on Flow Properties.Current edition approved May 1,2017.Published May 2017.Originallyapproved in 1966.Last previous edition approved in 2016 as D2532 16.DOI:10.1520/D2532-17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Standardization Documents Order Desk,DODSSP,Bldg.4,SectionD,700RobbinsAve.,Philadelphia,PA19111-5098,http:/dodssp.daps.dla.mil.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 MIL-PRF-23699 Lubricating Oil,Aircraft Turbine Engine,Synthetic Base,NATO Code Number O-15633.Terminology3.1 Definitions:3.1.1 digital contact thermometer(DCT),nan el