ASTM_D_6616_-_21.pdf

Designation:D661621Standard Test Method forMeasuring Viscosity at High Shear Rate by Tapered BearingSimulator Viscometer at 100 C1This standard is issued under the fixed designation D6616;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.1.Scope*1.1 This test method covers the laboratory determination ofthe viscosity of engine oils at 100 C and 1106s1using theTapered Bearing Simulator(TBS)viscometer.2NOTE1This test method is similar to Test Method D4683 which usesthe same TBS viscometer to measure high shear viscosity at 150 C.1.2 The Newtonian calibration oils used to establish this testmethod range from approximately 5 mPas(cP)to 12 mPas(cP)at 100 C and either the manual or automated protocol wasused by each participant in developing the precision statement.The viscosity range of the test method at this temperature isfrom 1 mPas(cP)to above 25 mPas(cP),depending on themodel of TBS.1.3 The non-Newtonian reference oil used to establish theshear rate of 1106s1for this test method has a viscosity ofapproximately 10 mPas at 100 C.1.4 Application to petroleum products other than engine oilhas not been determined in preparing the viscometric informa-tion for this test method.1.5 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.This test method uses the milliPascal second(mPas)as the unit of viscosity.This unit is equivalent to the centiPoise(cP),which is shown in parentheses.1.6 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,health,and environmental practices and todetermine the applicability of regulatory limitations prior touse.1.7 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:3D4683 Test Method for Measuring Viscosity of New andUsed Engine Oils at High Shear Rate and High Tempera-ture by Tapered Bearing Simulator Viscometer at 150 CD4741 Test Method for Measuring Viscosity at High Tem-perature and High Shear Rate by Tapered-Plug Viscometer2.2 Coordinating European Council(CEC)Standard:4,5CEC L-36-90The Measurement of Lubricant DynamicViscosity under Conditions of High Shear2.3 Energy Institute Standard:6,5IP 370 Test Method for the Measurement of LubricantDynamic Viscosity Under Conditions of High Shear Usingthe Ravenfield Viscometer3.Terminology3.1 Definitions:3.1.1 density,nmass per unit volume.3.1.2 Newtonian oil or fluid,nan oil or fluid that at a giventemperature exhibits a constant viscosity at all shear rates orshear stresses.3.1.3 non-Newtonian oil or fluid,nan oil or fluid thatexhibits a viscosity that varies with changing shear stress orshear rate.1This 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 Jan.1,2021.Published January 2021.Originallyapproved in 2001.Last previous edition approved in 2020 as D6616 20a.DOI:10.1520/D6616-21.2Available from Tannas Co.,4800 James Savage Rd.,Midland,MI 48642.Thisviscometer and associated equipment as listed in the research report was used todevelop the precision statement.To date,no other equipment has demonstrated,throughASTM International interlaboratory testing,the ability to meet the precisionof this test.This is not an endorsement or certification by ASTM International.3For 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.4Available from Coordinating European Council(CEC),Services provided byKellen Europe,Avenue Jules Bordet 142-1140,Brussels,Belgium,http:/www.cectests.org.5This test equipment is identical to that described in CEC L-36-90(under thejurisdiction of the CEC Engine Lubricants Technical Committee)and IP 370references CEC L-36-90.6Available from Energy Institute,61 New Cavendish St.,London,W1G 7AR,U.K.,http:/www.energyinst.org.*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 theDeve