ASTM_D_2161_-_17.pdf

Designation:D216117Standard Practice forConversion of Kinematic Viscosity to Saybolt UniversalViscosity or to Saybolt Furol Viscosity1This standard is issued under the fixed designation D2161;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 practice2covers the conversion tables and equa-tions for converting kinematic viscosity in mm2/s at anytemperature to Saybolt Universal viscosity in Saybolt Univer-sal seconds(SUS)at the same temperature and for convertingkinematic viscosity in mm2/s at 122 F and 210 F(50 C and98.9 C)to Saybolt Furol viscosity in Saybolt Furol seconds(SFS)at the same temperatures.Kinematic viscosity values arebased on water being 1.0034 mm2/s(cSt)at 68 F(20 C).NOTE1Afundamental and preferred method for measuring kinematicviscosity is by use of kinematic viscometers as outlined in Test MethodD445.Kinematic viscosity results from Test Method D7042 may be usedprovided they are bias-corrected by the application of the correctiondescribed in Test Method D7042 for the specific sample type.In case ofdispute,Test Method D445 shall be the referee method.It is recommendedthat kinematic viscosity be reported in millimetres squared per second,instead of Saybolt Universal Seconds(SUS)or Saybolt Furol Seconds(SFS).This method is being retained for the purpose of calculation ofkinematic viscosities from SUS and SFS data that appear in past literature.One millimetre squared per second(mm2/s)equals one centistoke(cSt),which is another unit commonly found in older literature.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are provided forreference information purposes only.The SI unit of kinematicviscosity is mm2/s.1.2.1 ExceptionFahrenheit temperature units are used inthis practice because they are accepted by industry for the typeof legacy conversions described in this practice.1.3 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.1.4 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:3D445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids(and Calculation of Dynamic Viscos-ity)D2270 Practice for Calculating Viscosity Index from Kine-matic Viscosity at 40 C and 100 CD7042 Test Method for Dynamic Viscosity and Density ofLiquids by Stabinger Viscometer(and the Calculation ofKinematic Viscosity)2.2 ASTM Adjunct:4ADJD2161 Viscosity Extrapolation Tables to Zero DegreesFahrenheit(SSU)3.Summary of Practice3.1 The Saybolt Universal viscosity equivalent to a givenkinematic viscosity varies with the temperature at which thedetermination is made.The basic conversion values are thosegiven in Table 1 for 100 F.The Saybolt Universal viscosityequivalent to a given kinematic viscosity at any temperaturemay be calculated as described in 4.3.Equivalent values at210 F are given in Table 1 for convenience.3.2 The Saybolt Furol viscosity equivalents are tabulated inTable 3 for temperatures of 122 F and 210 F only.3.3 Examples for using the tables are given in Appendix X1.1This practice is under the jurisdiction of ASTM Committee D02 on PetroleumProducts,Liquid Fuels,and Lubricants and is the direct responsibility of Subcom-mittee D02.07 on Flow Properties.Current edition approved July 1,2017.Published July 2017.Originally approvedin 1963,replacing former D446 and D666.Last previous edition approved in 2016as D2161 10(2016).DOI:10.1520/D2161-17.2This practice,together with Practice D2270,replaces Compilation of ASTMViscosity Tables for Kinematic Viscosity Conversions.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 ASTM International Headquarters.Order Adjunct No.ADJD2161.Original adjunct produced in 1998.*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 estab