1、Designation:D298317Standard Test Method forLow-Temperature Viscosity of Automatic TransmissionFluids,Hydraulic Fluids,and Lubricants using a RotationalViscometer1This standard is issued under the fixed designation D2983;the number immediately following the designation indicates the year oforiginal a
2、doption 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.
3、Scope*1.1 This test method covers the use of rotational viscom-eters with an appropriate torque range and specific spindle forthe determination of the low-shear-rate viscosity of automatictransmission fluids,gear oils,hydraulic fluids,and somelubricants.This test method covers the viscosity range of
4、300 mPas to 900 000 mPas1.2 Thistestmethodwaspreviouslytitled“Low-Temperature Viscosity of Lubricants Measured by BrookfieldViscometer.”In the lubricant industry,D2983 test results haveoften been referred to as“Brookfield2Viscosity”which impliesa viscosity determined by this method.1.3 This test met
5、hod contains three procedures:ProcedureAis used when only an air bath is used to cool samples inpreparation for viscosity measurement.Procedure B is usedwhen a mechanically refrigerated programmable liquid bath isused to cool samples in preparation for viscosity measurement.Procedure C is used when
6、a mechanically refrigerated constanttemperature liquid bath is used to cool samples by means of asimulated air cell(SimAir)3Cell in preparation for viscositymeasurement.1.4 The range of viscosity used to generate the precisiondata for this test method was from 300 mPas to 170 000 mPasat test tempera
7、tures from 12 C to 40 C.The ILS alsoincluded viscosities greater than 500 000 mPas and tempera-tures down to 55 C and are included in Appendix X5.Appendix X4 lists another interlaboratory study that specifi-cally targeted hydraulic fluid ranging from 500 mPas to1700 mPas.1.5 The values stated in SI
8、units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5.1 The test method uses the SI unit,milliPascal-second(mPas),as the unit of viscosity.(1 cP=1 mPas).1.6 WARNINGMercury has been designated by manyregulatory agencies as a hazardous material that can cau
9、secentral nervous system,kidney and liver damage.Mercury,orits vapor,may be hazardous to health and corrosive tomaterials.Caution should be taken when handling mercury andmercury containing products.See the applicable product Ma-terial Safety Data Sheet(MSDS)for details and EPAswebsitehttp:/www.epa.
10、gov/mercury/faq.htmfor addi-tional information.Users should be aware that selling mercuryand/or mercury containing products into your state or countrymay be prohibited by law.1.7 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibilit
11、y 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.1.8 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the
12、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:4D341 Practice for Viscosity-Temperature Charts for LiquidPetroleum ProductsD4175
13、Terminology Relating to Petroleum Products,LiquidFuels,and Lubricants1This 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.Publis
14、hed May 2017.Originallyapproved in 1971.Last previous edition approved in 2016 as D2983 16.DOI:10.1520/D2983-17.2Brookfield viscometer and accessories are a trademark of AMETEKBrookfield,Inc,11CommerceBlvd.,Middleboro,MA 02346,http:/.3SimAir is a trademark of Tannas Co.,4800 James Savage Rd.,Midland
15、,MI48642,http:/.4For 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.*A Summary of Changes section appears at the end o
16、f 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 D5133 Test Method for Low Temperature,Low Shear Rate,Viscosit