1、Designation: D2161 10Standard 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 o
2、f 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 Defense.1. Scope*1.1 This practic
3、e2covers 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 and 210F (50 and 98.9C)to Saybolt Furol viscosi
4、ty 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 kinematicviscosity is by use of kinematic viscometers as outlined in Test MethodD445. It is recommended
5、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 kinematic viscosities from SUS and SFS datathat appear in past literature. One millimetre
6、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 are provided forreference information purposes only. The SI unit of kinematicviscosity i
7、s 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 theresponsib
8、ility 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 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids (and Calculation of Dy
9、namic 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 Practice3.1 The Saybolt Universal viscosity equivalent to a givenkinematic viscosity varies w
10、ith 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 temperaturemay be calculated as described in 4.3. Equivalent values at210F are given in Table 1 for c
11、onvenience.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 inAppendix X1.4. Significance and Use4.1 At one time the petroleum industry relied on measuringkinematic viscosity by means of the Saybolt
12、 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 official equations relatingSUS and SFS to the SI kinematic viscosity units, mm2/s.1This
13、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 Oct. 1, 2010. Published November 2010. Originallyapproved in 1963, replacing former D446 and D666. Last prev
14、ious edition approvedin 2005 as D2161051. DOI: 10.1520/D2161-10.2This 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 serv
15、iceastm.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 1998.1*A Summary of Changes section appears at the end of this st
16、andard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.3 This practice allows for the conversion between SUSand SFS units and SI units of kinematic viscosity.5. Procedure for Conversion to Saybolt UniversalViscosity5.1 Convert kinem
17、atic 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 Table 1, by linear interpolat
18、ion (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 Appendix X1, Example3):Saybolt Universal seconds 5 centistokes 3 B (1)where B = 4.632 at 100F or 4.664 at 210F.5.
19、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 in SayboltUniversal seconds equ
20、ivalent 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 75 mm2/s (cSt), kinematic vis
21、cositiesabove 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 Convert kinematic viscosities betwee
22、n 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 linear interpolation (see Append
23、ix 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/s cSt! at 210F (4)7. Procedur
24、e 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 tables:U100F5 4.6324n11.0 1 0.032
25、64v3930.2 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= Saybolt Furol viscosity at 122F
26、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 of 32.0 s and above.7.3 Eq 7
27、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 = 0.01 poise.stokes = cgs unit o
28、f 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 second for values of 200 s and h
29、igher.10. Keywords10.1 kinematic viscosity; Saybolt furol; Saybolt universalD2161 102TABLE 1 Kinematic Viscosity 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(
30、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 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
31、.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 35.3 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
32、 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 35.7 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 37.4
33、1.88 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 3.41 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
34、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 37.5 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
35、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 37.92.02 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
36、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 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
37、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 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
38、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 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
39、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 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
40、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 103TABLE 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(
41、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 43.53.77 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
42、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 43.73.82 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
43、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 38.8 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
44、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 39.2 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
45、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 4.47 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
46、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 40.9 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
47、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 41.3 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
48、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 5.12 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
49、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 44.94.21 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
