ASTM D6616-07
(Test Method)Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer at 100°C
Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer at 100<span class='unicode'>°</span>C
SIGNIFICANCE AND USE
Viscosity at the shear rate and temperature of this test method is thought to be particularly representative of bearing conditions in large medium speed reciprocating engines as well as automotive and heavy duty engines operating in this temperature regime.
The importance of viscosity under these conditions has been stressed in railroad specifications.
SCOPE
1.1 This test method covers the laboratory determination of the viscosity of engine oils at 100°C and 1·106s–1 using the Tapered Bearing Simulator (TBS) viscometer.
Note 1—This test method is similar to Test Method D 4683 which uses the same TBS viscometer to measure high shear viscosity at 150°C.
1.2 The Newtonian calibration oils used to establish this test method range from approximately 5 to 12 mPa·s (cP) at 100°C and either the manual or automated protocol was used by each participant in developing the precision statement. The viscosity range of the test method at this temperature is from 1 mPa·s (cP) to above 25 mPa·s (cP), depending on the model of TBS.
1.3 The non-Newtonian reference oil used to establish the shear rate of 1·106s–1 for this test method has a viscosity of approximately 10 mPa·s at 100°C.
1.4 Application to petroleum products other than engine oil has not been determined in preparing the viscometric information for this test method.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. This test method uses the milliPascal second (mPa·s) 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 the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.
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Designation: D6616 − 07
StandardTest Method for
Measuring Viscosity at High Shear Rate by Tapered Bearing
1
Simulator Viscometer at 100°C
This standard is issued under the fixed designation D6616; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Referenced Documents
3
2.1 ASTM Standards:
1.1 This test method covers the laboratory determination of
6 –1
D4683 Test Method for Measuring Viscosity of New and
the viscosity of engine oils at 100°C and 1·10 s using the
2
Used Engine Oils at High Shear Rate and High Tempera-
Tapered Bearing Simulator (TBS) viscometer.
ture by Tapered Bearing Simulator Viscometer at 150 °C
NOTE 1—This test method is similar to Test Method D4683 which uses
D4741 Test Method for Measuring Viscosity at High Tem-
the same TBS viscometer to measure high shear viscosity at 150°C.
peratureandHighShearRatebyTapered-PlugViscometer
1.2 The Newtonian calibration oils used to establish this test
3. Terminology
method range from approximately 5 to 12 mPa·s (cP) at 100°C
and either the manual or automated protocol was used by each
3.1 Definitions:
participant in developing the precision statement.The viscosity
3.1.1 density, n—mass per unit volume. In the SI, the unit of
range of the test method at this temperature is from 1 mPa·s
density is the kilogram per cubic metre. For practical use, the
(cP) to above 25 mPa·s (cP), depending on the model of TBS.
submultiple, gram per cubic centimetre, is more convenient.
The density in gram per cubic centimetre is equal to 1/1000 the
1.3 The non-Newtonian reference oil used to establish the
3
6 –1 density in kg/m .
shear rate of 1·10 s for this test method has a viscosity of
3.1.2 Newtonianoilorfluid,n—anoilorfluidthatatagiven
approximately 10 mPa·s at 100°C.
temperature exhibits a constant viscosity at all shear rates or
1.4 Application to petroleum products other than engine oil
shear stresses.
has not been determined in preparing the viscometric informa-
3.1.3 non-Newtonian oil or fluid, n—an oil or fluid that
tion for this test method.
exhibits a viscosity that varies with changing shear stress or
1.5 The values stated in SI units are to be regarded as
shear rate.
standard. No other units of measurement are included in this
3.1.4 shear rate, n—the velocity gradient in fluid flow. The
–1
standard. This test method uses the milliPascal second (mPa·s)
SI unit for shear rate is s .
as the unit of viscosity.This unit is equivalent to the centiPoise
3.1.5 shear stress, n—the motivating force per unit area for
(cP), which is shown in parentheses.
fluid flow. The area is the area under shear. The SI unit for
1.6 This standard does not purport to address all of the
shear stress is the Pa.
safety concerns, if any, associated with its use. It is the
3.1.6 viscosity, n—the ratio between the applied shear stress
responsibility of the user of this standard to establish appro-
and the rate of shear. It is sometimes called the coefficient of
priate safety and health practices and to determine the
dynamic viscosity. This coefficient is a measure of the resis-
applicability of regulatory limitations prior to use.
tance to flow of the liquid. In the SI, the unit of viscosity is the
Pascal·second; often the milliPascal·second or its equivalent
the centiPoise is found more convenient.
1
This test method is under the jurisdiction of ASTM Committee D02 on
3.1.6.1 apparent viscosity, n—the viscosity of a non-
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
Newtonianfluidatagivenshearrateorshearstressdetermined
D02.07 on Flow Properties.
by this test method.
Current edition approved Nov. 1, 2007. Published December 2007. Originally
approved in 2001. Last previous edition approved in 2006 as D6616–01a(2006).
DOI: 10.1520/D6616-07.
2
Available from Tannas Co., 4800 James Savage Rd., Midland, MI 48642. This
3
viscometer and associated equipment as listed in the research report was used to For referenced ASTM standards, visit the ASTM website, www.astm.org, or
develop the precision statement. To date, no other equipment has demonstrated, contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
throughASTM International interlaboratory testing, the ability to meet the precision Standards volume information, refer to the standard’s Document Summary page on
of this test. This is not an endorsement or certification by ASTM International. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Unit
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
An American National Standard
Designation:D6616–01a (Reapproved 2006) Designation: D 6616 – 07
Standard Test Method for
Measuring Viscosity at High Shear Rate by Tapered Bearing
1
Simulator Viscometer at 100°C
This standard is issued under the fixed designation D 6616; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope*
6 –1
1.1 This test method covers the laboratory determination of the viscosity of engine oils at 100°C and 1·10 s using theTapered
2
Bearing Simulator (TBS) viscometer.
NOTE 1—This test method is similar to Test Method D 4683 which uses the same TBS viscometer to measure high shear viscosity at 150°C.
1.2 The Newtonian calibration oils used to establish this test method range from approximately 5 to 12 mPa·s (cP) at 100°C
and either the manual or automated protocol was used by each participant in developing the precision statement. The viscosity
range of the test method at this temperature is from 1 mPa·s (cP) to above 25 mPa·s (cP), depending on the model of TBS.
6 –1
1.3 The non-Newtonian reference oil used to establish the shear rate of 1·10 s for this test method has a viscosity of
approximately 10 mPa·s at 100°C.
1.4 Application to petroleum products other than engine oil has not been determined in preparing the viscometric information
for this test method.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
This test method uses the milliPascal second (mPa·s) 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 the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
3
2.1 ASTM Standards:
D 4683Test Method for Measuring Viscosity at High Shear Rate and High Temperature by Tapered Bearing Simulator Test
Method for Measuring Viscosity at High Shear Rate and High Temperature by Tapered Bearing Simulator
D 4741 Test Method for Measuring Viscosity at High Temperature and High Shear Rate by Tapered-Plug Viscometer
3. Terminology
3.1 Definitions:
3.1.1 density—the mass per unit volume. In the SI, the unit of density is the kilogram per cubic metre, but for practical use,
density, n—mass per unit volume. In the SI, the unit of density
asubmultipleismoreconvenient.Thegrampercubiccentimetreisequivalentto10
is the kilogram per cubic metre. For practical use, the submultiple, gram per cubic centimetre, is more convenient.The density in gram per cubic centimetre is equal to 1/1000
3
3
the density in kg/m kg/m and is customarily used. .
3.1.2 Newtonian oil or fluidNewtonian oil or fluid, n—an oil or fluid that at a given temperature exhibits a constant viscosity
at all shear rates or shear stresses.
3.1.3 non-Newtonian oil or fluidnon-Newtonian oil or fluid, n—an oil or fluid that exhibits a viscosity that varies with changing
shear stress or shear rate.
–1
3.1.4 shear rateshear rate, n—the velocity gradient in fluid flow. The SI unit for shear rate is s .
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.07.0B
on High Temperature Rheology of Non-Newtonian Fluids.
Current edition approved MayNov. 1, 2006.2007. Published June 2006.December 2007. Originally approved in 2001. Last previous edition approved in 20012006 as
D6616–01a.D 6616–01a(2006).
2
Available from Tannas Co., 4800 James Savage Rd., Midland, MI 48642. This viscometer and associated equipment as listed in the research report was used to develop
the precision statement. To date, no other equipment has demonstrated, throughASTM International interlaboratory testing, the ability to meet the precision of this test. This
is not an endorsement or certification by ASTM International.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standa
...
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