ASTM-D6896 2007

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D6896-03(2007) Standard Test Method for Determination of Yield Stress and Apparent Viscosity of Used Engine Oils at Low Temperature

Published By	Publication Date	Number of Pages
ASTM	2007	8

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Description

ASTM D6896-03-Reapproved2007

Historical Standard: Standard Test Method for Determination of Yield Stress and Apparent Viscosity of Used Engine Oils at Low Temperature

ASTM D6896

Scope

1.1 This test method covers the measurement of the yield stress and viscosity of engine oils after cooling at controlled rates over a period of 43 or 45 h to a final test temperature of -20 or -25°C. The viscosity measurements are made at a shear stress of 525 Pa over a shear rate of 0.4 to 15 s^-1. This test method is suitable for measurement of viscosities ranging from 4000 mPa·s to >400 000 mPa·s, and is suitable for yield stress measurements of 7 Pa to >350 Pa.

1.2 This test method is applicable for used diesel oils. The applicability and precision to other used or unused engine oils or to petroleum products other than engine oils has not been determined.

1.3 This test method uses the millipascal second (mPa·s) as the unit of viscosity. For information, the equivalent centipoise unit is shown in parentheses.

1.4 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 determine the applicability of regulatory limitations prior to use.

Keywords

low temperature flow properties; low temperature viscosity; mini-rotary viscometer; pumping viscosity; used diesel engine oil; viscosity; yield stress; Apparent viscosity; Low-temperature testing; Mini-rotary viscometer; Pumping viscosity; Used engine oils; Viscosity–petroleum products; Yield stress

ICS Code

ICS Number Code 17.060 (Measurement of volume, mass, density, viscosity)

DOI: 10.1520/D6896-03R07

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use Apparatus
3	Reagents and Materials Sampling Calibration and Standardization Procedure
5	Calculation of Yield Stress and Apparent Viscosity Report Precision and Bias
6	Keywords X1. TEMPERATURE PROFILES FOR TEST TEMPERATURES X1.1 TABLE X1.1 TABLE X1.2 TABLE X1.3
7	X2. SUPPORTING OPERATIONAL INFORMATION X2.1 X2.2 X2.3 X2.4
8	REFERENCES

Additional information

Standard Title	D6896-03(2007) Standard Test Method for Determination of Yield Stress and Apparent Viscosity of Used Engine Oils at Low Temperature
Published Code	ASTM
Publication Date	2007
Pages Count	8