1、Designation: D 2161 051An American National StandardStandard Practice forConversion of Kinematic Viscosity to Saybolt UniversalViscosity or to Saybolt Furol Viscosity1This standard is issued under the fixed designation D 2161; the number immediately following the designation indicates the year ofori
2、ginal 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 Department of D
3、efense.1NOTECorrected SFS at 122F for Kin Vis of 491 mm2/s in Table 3 editorially in October 2008.1. 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
4、 the same temperature and for convertingkinematic 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 me
5、thod for measuring kinematicviscosity is by use of kinematic viscometers as outlined in Test MethodD 445. It is recommended that kinematic viscosity be reported inmillimetres squared per second, instead of Saybolt Universal Seconds(SUS) or Saybolt Furol Seconds (SFS). This method is being retained f
6、orthe purpose of calculation of kinematic 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 SI unit of kinematic viscosity, mm2/s, and tempera-ture in
7、degrees Fahrenheit are the standard in this practice.2. Referenced Documents2.1 ASTM Standards:3D 445 Test Method for Kinematic Viscosity of Transparentand Opague LiquidsD 2270 Practice for Calculating Viscosity Index from Kine-matic Viscosity at 40 and 100C2.2 ASTM Adjunct:ADJD2161 Viscosity Extrap
8、olation 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 100F. The Saybolt Universal viscos
9、ityequivalent to a given kinematic viscosity at any temperaturemay 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 ta
10、bles are given inAppendix X1.4. Significance and Use4.1 At one time 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 obso
11、lete in the petroleum industry.4.2 This practice establishes the official equations relatingSUS and SFS to the SI kinematic viscosity units, mm2/s.4.3 This practice allows for the conversion between SUSand SFS units and SI units of kinematic viscosity.5. Procedure for Conversion to Saybolt Universal
12、Viscosity5.1 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).NOTE 2Obtain viscosities not listed, but which are within the rangegiven in Tab
13、le 1, by linear interpolation (see Appendix X1, Example 2).1This practice is under the jurisdiction of ASTM Committee D02 on PetroleumProducts and Lubricants and is the direct responsibility of Subcommittee D02.07 onFlow Properties.Current edition approved April 1, 2005. Published April 2005. Origin
14、allyapproved in 1963, replacing former D 446 and D 666. Last previous editionapproved in 1999 as D 2161 93 (1999)2.2This practice, together with Practice D 2270, replaces Compilation of ASTMViscosity Tables for Kinematic Viscosity Conversions.3For referenced ASTM standards, visit the ASTM website, w
15、ww.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.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive
16、, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.2 Convert kinematic viscosities greater than the upperlimits of Table 1 at temperatures of 100 and 210F to SayboltUniversal viscosities as follows (see Appendix X1, Example3):Saybolt Universal seconds 5 centistokes 3 B (1)where B = 4.6
17、32 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 U100F1 1 0.000061t 2 100! (2)where:Ut= Saybolt Universal viscosity at tF, andU100F= Saybolt Universal viscosity at 100F i
18、n SayboltUniversal seconds equivalent to kinematic vis-cosity 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 the relationship between Saybolt and kinematicviscosities is linear above
19、 75 mm2/s (cSt), kinematic viscositiesabove this limit may be converted to Saybolt Universalviscosities at any temperature between 0 and 350F by use ofEq1(4.2), selecting the proper factor for B from Table 2 (seeAppendix X1, Example 5).6. Procedure for Conversion to Saybolt Furol Viscosity6.1 Conver
20、t 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 listed, but which are within the range given inTable 3, may be obtained by li
21、near 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 122F5 0.4717 3 mm2/s cSt! at 122F (3)Saybolt Furol seconds at 210F5 0.4792 3 mm2
22、/s cSt! at 210F (4)7. 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 thosewho wish to use a computer for conversion rather than refer tothe tab
23、les:U100F5 4.6324n11.0 1 0.03264v3930.2 1 262.7n123.97n21 1.646n3! 3 105(5)Ut5 1.0 1 0.000061t 2 100!#F4.6324n11.0 1 0.03264n3930.2 1 262.7n123.97n21 1.646n3! 3 105G(6)F122F5 0.4717n1F13924n22 72.59n16816!G(7)F210F5 0.4792n1F5610v21 2130!G(8)where:n = kinematic viscosity, mm2/s (cSt) at tF,F122F= Sa
24、ybolt 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 Table 1 are limited to values ofSaybolt Universal
25、 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:poise = cgs unit of absolute viscosity.centipoise =
26、0.01 poise.stokes = cgs unit of kinematic viscosity.centistokes = 0.01 stokes.centipoise = centistokes 3 density (at temperature under consider-ation).9. Report9.1 Saybolt Universal and Saybolt Furol viscosities shouldbe reported to the nearest 0.1 s for values below 200 s and tothe nearest whole se
27、cond for values of 200 s and higher.10. Keywords10.1 kinematic viscosity; Saybolt furol; Saybolt universal4“Viscosity Extrapolation Tables to Zero Degrees Fahrenheit (SSU)” areavailable at a nominal cost from ASTM International Headquarters. RequestAdjunct No. ADJD2161.D21610512TABLE 1 Kinematic Vis
28、cosity to Saybolt Universal Viscosity1.77 to 500.0 mm2/s (cSt)Kin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity, SUSKin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity, SUSKin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity, SUSKin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity, SUSAt
29、 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 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 3
30、5.3 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 35.3 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
31、.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 35.7 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.
32、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 3.41 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
33、.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 37.5 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
34、.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 37.92.02 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 38.02.0
35、5 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 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.
36、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 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.
37、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 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 2.7
38、0 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 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 38.6D21610513TABLE 1 Contin
39、uedKin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity, SUSKin 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 21
40、0F3.75 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 43.53.77 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 43.63.8
41、0 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 43.73.82 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.
42、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 38.8 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.
43、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 39.2 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 4.4
44、5 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 4.47 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.
45、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 40.9 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.
46、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 41.3 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 5.1
47、0 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 5.12 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.
48、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.
49、3 5.70 44.6 44.94.21 39.9 40.1 4.71 41.5 41.7 5.21 43.1 43.3 5.71 44.7 45.04.22 39.9 40.2 4.72 41.5 41.8 5.22 43.1 43.4 5.72 44.7 45.04.23 39.9 40.2 4.73 41.5 41.8 5.23 43.1 43.4 5.73 44.7 45.04.24 40.0 40.2 4.74 41.6 41.8 5.24 43.2 43.4 5.74 44.7 45.0D21610514TABLE 1 ContinuedKin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity, SUSKin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity, SUSKin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity, SUSKin Vis,mm2/s(cSt)Equivalent SayboltUniversalViscosity
