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ASTM D4741

Standard Test Method for Measuring Viscosity at High Temperature and High Shear Rate by Tapered-Plug Viscometer

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Organization: ASTM
Publication Date: 1 June 2020
Status: active
Page Count: 6
ICS Code (Lubricants, industrial oils and related products): 75.100
scope:

This test method2 covers the laboratory determination of the viscosity of oils at 150 °C and 1 × 106 s-1 and at 100 °C and 1 × 106 s-1, using high shear rate tapered-plug viscometer models BE/C or BS/C.

Newtonian calibration oils are used to adjust the working gap and for calibration of the apparatus. These calibration oils cover a range from approximately 1.4 mPa·s to 5.9 mPa·s (cP) at 150 °C and 4.2 mPa·s to 18.9 mPa·s (cP) at 100 °C. This test method should not be used for extrapolation to higher viscosities than those of the Newtonian calibration oils used for calibration of the apparatus. If it is so used, the precision statement will no longer apply. The precision has only been determined for the viscosity range 1.48 mPa·s to 5.07 mPa·s at 150 °C and from 4.9 mPa·s to 11.8 mPa·s at 100 °C for the materials listed in the precision section.

A non-Newtonian reference oil is used to check that the working conditions are correct. The exact viscosity appropriate to each batch of this oil is established by testing on a number of instruments in different laboratories. The agreed value for this reference oil may be obtained from the chairman of the Coordinating European Council (CEC) Surveillance Group for CEC L-36-90, or from the distributor.

Applicability to products other than engine oils has not been determined in preparing 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 except those noted below.

Exception-This test method uses the SI unit millipascal-second (mPa·s) as the unit of viscosity. (1 cP = 1 mPa·s.)

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

2 This test method is technically identical to that described in CEC L-36-90 (under the jurisdiction of the CEC Engine Lubricants Technical Committee) and in IP 370.

*A Summary of Changes section appears at the end of this standard

Document History

ASTM D4741
June 1, 2020
Standard Test Method for Measuring Viscosity at High Temperature and High Shear Rate by Tapered-Plug Viscometer
This test method2 covers the laboratory determination of the viscosity of oils at 150 °C and 1 × 106 s–1 and at 100 °C and 1 × 106 s–1, using high shear rate tapered-plug viscometer models BE/C or...
June 1, 2018
Standard Test Method for Measuring Viscosity at High Temperature and High Shear Rate by Tapered-Plug Viscometer
This test method2 covers the laboratory determination of the viscosity of oils at 150 °C and 1 × 106 s–1 and at 100 °C and 1 × 106 s–1, using high shear rate tapered-plug viscometer models BE/C or...
January 1, 2017
Standard Test Method for Measuring Viscosity at High Temperature and High Shear Rate by Tapered-Plug Viscometer
This test method2 covers the laboratory determination of the viscosity of oils at 150 °C and 1 × 106 s–1 and at 100 °C and 1 × 106 s–1, using high shear rate tapered-plug viscometer models BE/C or...
October 1, 2013
Standard Test Method for Measuring Viscosity at High Temperature and High Shear Rate by Tapered-Plug Viscometer
This test method2 covers the laboratory determination of the viscosity of oils at 150 °C and 1 × 106s–1 and at 100 °C and 1 × 106s–1, using high shear rate tapered-plug viscometer models BE/C or...
November 1, 2012
Standard Test Method for Measuring Viscosity at High Temperature and High Shear Rate by Tapered-Plug Viscometer
This test method2 covers the laboratory determination of the viscosity of oils at 150°C and 1 × 106s–1 and at 100°C and 1 × 10 6s–1, using high shear rate tapered-plug viscometer models BE/C or BS/C....
May 1, 2006
Standard Test Method for Measuring Viscosity at High Temperature and High Shear Rate by Tapered-Plug Viscometer
This test method2 covers the laboratory determination of the viscosity of oils at 150°C and 1 X 106s–1 and at 100°C and 1 X 106s–1, using high shear rate tapered-plug viscometer models BE/C or...
December 10, 2000
Standard Test Method for Measuring Viscosity at High Temperature and High Shear Rate by Tapered-Plug Viscometer
1. Scope 1.1 This test method covers the laboratory determination of the viscosity of oils at 150°C and 1 × 106s−1 and at 100°C and 1 × 106s−1, using high shear rate tapered-plug viscometer models...
April 10, 1996
Standard Test Method for Measuring Viscosity at High Temperature and High Shear Rate by Tapered-Plug Viscometer
1. Scope 1.1 This test method covers the laboratory determination of the viscosity of oils at 150°C and 1 × 106 s−1 using Ravenfield high shear rate tapered-plug viscometer models BE or BS. This test...
October 30, 1987
STANDARD TEST METHOD FOR MEASURING VISCOSITY AT HIGH TEMPERATURE AND HIGH SHEAR RATE BY TAPERED-PLUG VISCOMETER (R 1993)
A description is not available for this item.

References

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