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ASTM D 6616 Document Information:
Title
Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer at 100°C
ASTM International
Publication Date:
Nov 1, 2007
Scope:
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.2
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.
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.
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.
Application to petroleum products other than engine oil has not
been determined in preparing the viscometric information for this
test method.
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.
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.
*A Summary of Changes section appears at the end of this
standard.
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, through
ASTM International interlaboratory testing, the ability to meet the
precision of this test. This is not an endorsement or certification
by ASTM International.
Keywords:
- dynamic viscosity
- high shear rate viscosity
- high shear rate viscosity at 100°C
- high shear viscosity
- high temperature viscosity
- rotational viscometer
- Tapered Bearing Simulator Viscometer
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