1、Designation: D2161 101Standard 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
2、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.1NOTEThe format of
3、continuing Table 1 was corrected editorially in September 2015.1. 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 conve
4、rtingkinematic viscosity in mm2/s at 122 and 210F (50 and 98.9C)to Saybolt Furol viscosity in Saybolt Furol seconds (SFS) at thesame temperatures. Kinematic viscosity values are based onwater being 1.0034 mm2/s (cSt) at 68F (20C).NOTE 1Afundamental and preferred method for measuring kinematicviscosi
5、ty is by use of kinematic viscometers as outlined in Test MethodD445. It is recommended that kinematic viscosity be reported in millime-tres squared per second, instead of Saybolt Universal Seconds (SUS) orSaybolt Furol Seconds (SFS). This method is being retained for thepurpose of calculation of ki
6、nematic viscosities from SUS and SFS datathat appear in past literature. One millimetre squared per second (mm2/s)equals one centistoke (cSt), which is another unit commonly found inolder literature.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses
7、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 t
8、o 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.2. Referenced Documents2.1 ASTM Standards:3D445 Tes
9、t 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 and 100C2.2 ASTM Adjunct:4ADJD2161 Viscosity Extrapolation Tables to Zero DegreesFahrenheit (SSU)3. Summary of Pract
10、ice3.1 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 100F. The Saybolt Universal viscosityequivalent to a given kinematic viscosity at any temperaturema
11、y be calculated as described in 4.3. Equivalent values at210F are given in Table 1 for convenience.3.2 The Saybolt Furol viscosity equivalents are tabulated inTable 3 for temperatures of 122F and 210F only.3.3 Examples for using the tables are given in Appendix X1.4. Significance and Use4.1 At one t
12、ime the petroleum industry relied on measuringkinematic viscosity by means of the Saybolt viscometer, andexpressing kinematic viscosity in units of Saybolt UniversalSeconds (SUS) and Saybolt Furol Seconds (SFS). This practiceis now obsolete in the petroleum industry.4.2 This practice establishes the
13、 official equations relatingSUS and SFS to the SI kinematic viscosity units, mm2/s.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 Oc
14、t. 1, 2010. Published November 2010. Originallyapproved in 1963, replacing former D446 and D666. Last previous edition approvedin 2005 as D2161051. DOI: 10.1520/D2161-10E01.2This practice, together with Practice D2270, replaces Compilation of ASTMViscosity Tables for Kinematic Viscosity Conversions.
15、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 Adjunc
16、t 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 States14.3 This practice allows for the conversion between SUSand SFS units and
17、 SI units of kinematic viscosity.5. Procedure for Conversion to Saybolt UniversalViscosity5.1 Convert kinematic viscosities between 1.81 and 500mm2/s (cSt) at 100F, and between 1.77 and 139.8 mm2/s (cSt)at 210F, to equivalent Saybolt Universal seconds directly fromTable 1 (see Appendix X1, Example 1
18、).NOTE 2Obtain viscosities not listed, but which are within the rangegiven in Table 1, by linear interpolation (see Appendix X1, Example 2).5.2 Convert kinematic viscosities greater than the upperlimits of Table 1 at temperatures of 100 and 210F to SayboltUniversal viscosities as follows (see Append
19、ix X1, Example3):Saybolt Universal seconds 5 centistokes 3B (1)where B = 4.632 at 100F or 4.664 at 210F.5.3 At temperatures other than 100 or 210F, convertkinematic viscosities to Saybolt Universal viscosities as fol-lows4(see Appendix X1, Example 4):Ut5 U100F110.000061t 2 100! (2)where:Ut= Saybolt
20、Universal viscosity at tF, andU100F= Saybolt Universal viscosity at 100F in SayboltUniversal seconds equivalent to kinematic viscos-ity in centistokes at tF, from Table 1.NOTE 3The multipliers for Saybolt Universal seconds in Eq 2 aregiven as Factor A in Table 2 for a range of temperatures.5.4 Since
21、 the relationship between Saybolt and kinematicviscosities is linear above 75 mm2/s (cSt), kinematic viscositiesabove this limit may be converted to Saybolt Universalviscosities at any temperature between 0 and 350F by use ofEq 1 (4.2), selecting the proper factor for B from Table 2 (seeAppendix X1,
22、 Example 5).6. Procedure for Conversion to Saybolt Furol Viscosity6.1 Convert kinematic viscosities between 48 to 1300 mm2/s (cSt) at 122F, and between 50 and 1300 mm2/s (cSt) at210F, to equivalent Saybolt Furol seconds directly from Table3 (see Appendix X1, Examples 6 and 7).NOTE 4Viscosities not l
23、isted, but which are within the range given inTable 3, may be obtained by linear interpolation (see Appendix X1,Example 8).6.2 Convert kinematic viscosities above 1300 cSt to equiva-lent Saybolt Furol seconds by use of the following equations(see Appendix X1, Example 9):Saybolt Furol seconds at 122F
24、 (3)5 0.4717 3mm2/s cSt! at 122FSaybolt Furol seconds at 210F (4)5 0.4792 3mm2/s cSt! at 210F7. Procedure for Computer Calculation7.1 Table 1 and Table 3 were computed by fitting a smoothcurve to the original experimental data points. The derivedequations are given as follows for the convenience of
25、thosewho wish to use a computer for conversion rather than refer tothe tables:U100F5 4.632411.010.03264v3930.21262.7123.97211.6463! 31025(5)Ut5 1.010.000061t 2 100!# (6)F4.632411.010.032643930.21262.7123.97211.6463! 31025GF122F5 0.47171F1392422 72.5916816!G(7)F210F5 0.47921F5610v212130!G(8)where: =
26、kinematic viscosity, mm2/s (cSt) at tF,F122F= Saybolt Furol viscosity at 122F in Saybolt Furolseconds equivalent to kinematic viscosity, mm2/s(cSt) at 122F, andF210F= Saybolt Furol viscosity at 210F in Saybolt Furolseconds equivalent to kinematic viscosity, mm2/s(cSt) at 210F.7.2 Eq 5 and Eq 6 and T
27、able 1 are limited to values ofSaybolt Universal of 32.0 s and above.7.3 Eq 7 and Eq 8 and Table 3 are limited to values ofSaybolt Furol of 25.1 s and above.8. Supplementary Conversion Equivalents8.1 The following units and equivalents are frequently usedin connection with viscosity conversions:pois
28、e = cgs unit of absolute viscosity.centipoise = 0.01 poise.stokes = cgs unit of kinematic viscosity.centistokes = 0.01 stokes.centipoise = centistokes density (at temperature underconsideration).9. Report9.1 Saybolt Universal and Saybolt Furol viscosities shouldbe reported to the nearest 0.1 s for v
29、alues below 200 s and tothe nearest whole second for values of 200 s and higher.10. Keywords10.1 kinematic viscosity; Saybolt furol; Saybolt universalD2161 1012TABLE 1 Kinematic Viscosity to Saybolt Universal Viscosity1.77 to 500.0 mm2/s (cSt)Kin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity, S
30、USKin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity, SUSKin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity, SUSKin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity, SUSAt 100F At 210F At 100F At 210F At 100F At 210F At 100F At 210F2.25 33.5 33.7 2.75 35.1 35.4 3.25 36.8 37.02.26 33.5 33.7
31、 2.76 35.2 35.4 3.26 36.8 37.01.77 . . 32.0 2.27 33.5 33.7 2.77 35.2 35.4 3.27 36.8 37.11.78 . . 32.1 2.28 33.6 33.8 2.78 35.2 35.5 3.28 36.9 37.11.79 . . 32.1 2.29 33.6 33.8 2.79 35.3 35.5 3.29 36.9 37.11.80 . . 32.1 2.30 33.6 33.8 2.80 35.3 35.5 3.30 36.9 37.21.81 32.0 32.2 2.31 33.7 33.9 2.81 35.
32、3 35.6 3.31 37.0 37.21.82 32.0 32.2 2.32 33.7 33.9 2.81 35.4 35.6 3.32 37.0 37.21.83 32.0 32.2 2.33 33.7 33.9 2.83 35.4 35.6 3.33 37.0 37.31.84 32.1 32.3 2.34 33.8 34.0 2.84 35.4 35.7 3.34 37.1 37.31.85 32.1 32.3 2.35 33.8 34.0 2.85 35.5 35.7 3.35 37.1 37.31.86 32.1 32.3 2.36 33.8 34.0 2.86 35.5 35.
33、7 3.36 37.1 37.41.87 32.2 32.4 2.37 33.9 34.1 2.87 35.5 35.8 3.37 37.2 37.41.88 32.2 32.4 2.38 33.9 34.1 2.88 35.6 35.8 3.38 37.2 37.41.89 32.2 32.4 2.39 33.9 34.2 2.89 35.6 35.8 3.39 37.2 37.51.90 32.3 32.5 2.40 34.0 34.2 2.90 35.6 35.9 3.40 37.3 37.51.91 32.3 32.5 2.41 34.0 34.2 2.91 35.7 35.9 3.4
34、1 37.3 37.51.92 32.3 32.5 2.42 34.0 34.3 2.92 35.7 35.9 3.42 37.3 37.61.93 32.4 32.6 2.43 34.1 34.3 2.93 35.7 36.0 3.43 37.4 37.61.94 32.4 32.6 2.44 34.1 34.3 2.94 35.8 36.0 3.44 37.4 37.61.95 32.4 32.6 2.45 34.1 34.4 2.95 35.8 36.0 3.45 37.4 37.71.96 32.5 32.7 2.46 34.2 34.4 2.96 35.8 36.1 3.46 37.
35、5 37.71.97 32.5 32.7 2.47 34.2 34.4 2.97 35.9 36.1 3.47 37.5 37.71.98 32.5 32.8 2.48 34.2 34.5 2.98 35.9 36.1 3.48 37.5 37.81.99 32.6 32.8 2.49 34.3 34.5 2.99 35.9 36.2 3.49 37.6 37.82.00 32.6 32.8 2.50 34.3 34.5 3.00 36.0 36.2 3.50 37.6 37.82.01 32.6 32.9 2.51 34.3 34.6 3.01 36.0 36.2 3.51 37.6 37.
36、92.02 32.7 32.9 2.52 34.4 34.6 3.02 36.0 36.3 3.52 37.6 37.92.03 32.7 32.9 2.53 34.4 34.6 3.03 36.0 36.3 3.53 37.7 37.92.04 32.7 33.0 2.54 34.4 34.7 3.04 36.1 36.3 3.54 37.7 38.02.05 32.8 33.0 2.55 34.5 34.7 3.05 36.1 36.4 3.55 37.7 38.02.06 32.8 33.0 2.56 34.5 34.7 3.06 36.1 36.4 3.56 37.8 38.02.07
37、 32.8 33.1 2.57 34.5 34.8 3.07 36.2 36.4 3.57 37.8 38.12.08 32.9 33.1 2.58 34.6 34.8 3.08 36.2 36.5 3.58 37.8 38.12.09 32.9 33.1 2.59 34.6 34.8 3.09 36.2 36.5 3.59 37.9 38.12.10 32.9 33.2 2.60 34.6 34.9 3.10 36.3 36.5 3.60 37.9 38.22.11 33.0 33.2 2.61 34.7 34.9 3.11 36.3 36.6 3.61 37.9 38.22.12 33.0
38、 33.2 2.62 34.7 34.9 3.12 36.3 36.6 3.62 38.0 38.22.13 33.0 33.3 2.63 34.7 35.0 3.13 36.4 36.6 3.63 38.0 38.32.14 33.1 33.3 2.64 34.8 35.0 3.14 36.4 36.7 3.64 38.0 38.32.15 33.1 33.3 2.65 34.8 35.0 3.15 36.4 36.7 3.65 38.1 38.32.16 33.1 33.4 2.66 34.8 35.1 3.16 36.5 36.7 3.66 38.1 38.42.17 33.2 33.4
39、 2.67 34.9 35.1 3.17 36.5 36.8 3.67 38.1 38.42.18 33.2 33.4 2.68 34.9 35.1 3.18 36.5 36.8 3.68 38.2 38.42.19 33.2 33.5 2.69 34.9 35.2 3.19 36.6 36.8 3.69 38.2 38.52.20 33.3 33.5 2.70 35.0 35.2 3.20 36.6 36.9 3.70 38.2 38.52.21 33.3 33.5 2.71 35.0 35.2 3.21 36.6 36.9 3.71 38.3 38.52.22 33.3 33.6 2.72
40、 35.0 35.3 3.22 36.7 36.9 3.72 38.3 38.62.23 33.4 33.6 2.73 35.1 35.3 3.23 36.7 37.0 3.73 38.3 38.62.24 33.4 33.6 2.74 35.1 35.3 3.24 36.7 37.0 3.74 38.4 38.6D2161 1013TABLE 1 ContinuedKin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity, SUSKin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity,
41、SUSKin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity, SUSKin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity, SUSAt 100F At 210F At 100F At 210F At 100F At 210F At 100F At 210F3.75 38.4 38.7 4.25 40.0 40.3 4.75 41.6 41.9 5.25 43.2 43.53.76 38.4 38.7 4.26 40.0 40.3 4.76 41.6 41.9 5.26 43.2 43
42、.53.77 38.5 38.7 4.27 40.1 40.3 4.77 41.7 41.9 5.27 43.3 43.53.78 38.5 38.7 4.28 40.1 40.4 4.78 41.7 42.0 5.28 43.3 43.63.79 38.5 38.8 4.29 40.1 40.4 4.79 41.7 42.0 5.29 43.3 43.63.80 38.6 38.8 4.30 40.2 40.4 4.80 41.8 42.0 5.30 43.3 43.63.81 38.6 38.8 4.31 40.2 40.5 4.81 41.8 42.1 5.31 43.4 43.73.8
43、2 38.6 38.9 4.32 40.2 40.5 4.82 41.8 42.1 5.32 43.4 43.73.83 38.7 38.9 4.33 40.3 40.5 4.83 41.9 42.1 5.33 43.4 43.73.84 38.7 38.9 4.34 40.3 40.6 4.84 41.9 42.2 5.34 43.5 43.83.85 38.7 39.0 4.35 40.3 40.6 4.85 41.9 42.2 5.35 43.5 43.83.86 38.7 39.0 4.36 40.4 40.6 4.86 41.9 42.2 5.36 43.5 43.83.87 38.
44、8 39.0 4.37 40.4 40.7 4.87 42.0 42.3 5.37 43.6 43.93.88 38.8 39.1 4.38 40.4 40.7 4.88 42.0 42.3 5.38 43.6 43.93.89 38.8 39.1 4.39 40.4 40.7 4.89 42.0 42.3 5.39 43.6 43.93.90 38.9 39.1 4.40 40.5 40.8 4.90 42.1 42.4 5.40 43.7 44.03.91 38.9 39.2 4.41 40.5 40.8 4.91 42.1 42.4 5.41 43.7 44.03.92 38.9 39.
45、2 4.42 40.5 40.8 4.92 42.1 42.4 5.42 43.7 44.03.93 39.0 39.2 4.43 40.6 40.8 4.93 42.2 42.5 5.43 43.8 44.13.94 39.0 39.3 4.44 40.6 40.9 4.94 42.2 42.5 5.44 43.8 44.13.95 39.0 39.3 4.45 40.6 40.9 4.95 42.2 42.5 5.45 43.8 44.13.96 39.1 39.3 4.46 40.7 40.9 4.96 42.3 42.5 5.46 43.9 44.23.97 39.1 39.4 4.4
46、7 40.7 41.0 4.97 42.3 42.6 5.47 43.9 44.23.98 39.1 39.4 4.48 40.7 41.0 4.98 42.3 42.6 5.48 43.9 44.23.99 39.2 39.4 4.49 40.8 41.0 4.99 42.4 42.6 5.49 44.0 44.24.00 39.2 39.5 4.50 40.8 41.1 5.00 42.4 42.7 5.50 44.0 44.34.01 39.2 39.5 4.51 40.8 41.1 5.01 42.4 42.7 5.51 44.0 44.34.02 39.3 39.5 4.52 40.
47、9 41.1 5.02 42.5 42.7 5.52 44.0 44.34.03 39.3 39.6 4.53 40.9 41.2 5.03 42.5 42.8 5.53 44.1 44.44.04 39.3 39.6 4.54 40.9 41.2 5.04 42.5 42.8 5.54 44.1 44.44.05 39.4 39.6 4.55 41.0 41.2 5.05 42.6 42.8 5.55 44.1 44.44.06 39.4 39.7 4.56 41.0 41.3 5.06 42.6 42.9 5.56 44.2 44.54.07 39.4 39.7 4.57 41.0 41.
48、3 5.07 42.6 42.9 5.57 44.2 44.54.08 39.5 39.7 4.58 41.1 41.3 5.08 42.6 42.9 5.58 44.2 44.54.09 39.5 39.8 4.59 41.1 41.4 5.09 42.7 43.0 5.59 44.3 44.64.10 39.5 39.8 4.60 41.1 41.4 5.10 42.7 43.0 5.60 44.3 44.64.11 39.6 39.8 4.61 41.2 41.4 5.11 42.7 43.0 5.61 44.3 44.64.12 39.6 39.8 4.62 41.2 41.5 5.1
49、2 42.8 43.1 5.62 44.4 44.74.13 39.6 39.9 4.63 41.2 41.5 5.13 42.8 43.1 5.63 44.4 44.74.14 39.6 39.9 4.64 41.2 41.5 5.14 42.8 43.1 5.64 44.4 44.74.15 39.7 39.9 4.65 41.3 41.6 5.15 42.9 43.2 5.65 44.5 44.84.16 39.7 40.0 4.66 41.3 41.6 5.16 42.9 43.2 5.66 44.5 44.84.17 39.7 40.0 4.67 41.3 41.6 5.17 42.9 43.2 5.67 44.5 44.84.18 39.8 40.0 4.68 41.4 41.7 5.18 43.0 43.3 5.68 44.6 44.94.19 39.8 40.1 4.69 41.4 41.7 5.19 43.0 43.3 5.69 44.6 44.94.20 39.8 40.1 4.70 41.4 41.7 5.20 43.0 43.3 5.70 44.6 44
