ASTM D6616-17
Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer at 100&x2009;&xb0;C

Standard No.

ASTM D6616-17

Release Date

2017

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D6616-20

Latest

ASTM D6616-21

Scope

5.1 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.

5.2 The importance of viscosity under these conditions has been stressed in railroad specifications.

5.3 For other industry needs this method may also be run at 808201;°C by using different crossover calibration oils available from the manufacturer. No precision has been determined at this temperature. The equipment is also used at higher temperatures as shown in Test Method D4683 and CEC L-36-90 (also referenced from IP 370).

1.1 This test method covers the laboratory determination of the viscosity of engine oils at 1008201;°C and 1·10⁶s^–1 using the Tapered Bearing Simulator (TBS) viscometer.2

Note 1: This test method is similar to Test Method D4683 which uses the same TBS viscometer to measure high shear viscosity at 1508201;°C.

1.2 The Newtonian calibration oils used to establish this test method range from approximately 58201;mPa·s (cP) to 128201;mPa·s (cP) at 1008201;°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 18201;mPa·s (cP) to above 258201;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 108201;mPa·s at 1008201;°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.

ASTM D6616-17 Referenced Document

• ASTM D4683 Standard Test Method for Measuring Viscosity at High Shear Rate and High Temperature by Tapered Bearing Simulator
• ASTM D4741 Standard Test Method for Measuring Viscosity at High Temperature and High Shear Rate by Tapered-Plug Viscometer

ASTM D6616-17 history

• 2021 ASTM D6616-21 Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer at 100 ��C
• 2020 ASTM D6616-20a Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer at 100 °C
• 2020 ASTM D6616-20 Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer at 100 °C
• 2017 ASTM D6616-17 Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer at 100&x2009;&xb0;C
• 2007 ASTM D6616-07(2012) Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer at 100deg;C
• 2007 ASTM D6616-07 Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer at 100x00B0;C
• 2001 ASTM D6616-01a(2006) Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer At 100176;C
• 2001 ASTM D6616-01a Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer At 100°C
• 2001 ASTM D6616-01 Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer At 100deg;C