ASTM-D4683 2004

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D4683-04 Standard Test Method for Measuring Viscosity at High Shear Rate and High Temperature by Tapered Bearing Simulator

Published By	Publication Date	Number of Pages
ASTM	2004	7

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Category: ASTM

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Description

ASTM D4683-04

Historical Standard: Standard Test Method for Measuring Viscosity at High Shear Rate and High Temperature by Tapered Bearing Simulator

ASTM D4683

Scope

1.1 This test method covers the laboratory determination of the viscosity of engine oils at 150C and 1 10 ⁶ s¹ shear rate using a tapered bearing simulator-viscometer (TBS Viscometer) equipped with a refined thermoregulator system. Older TBS units not so equipped must use Test Method D 4683-87.

1.2 The Newtonian calibration oils used to establish this test method cover the range from approximately 1.5 to 5.6 cP (mPas) at 150°C.

1.3 The non-Newtonian reference oil used to establish this test method has a viscosity of approximately 3.5 cP (mPas) at 150C and a shear rate of 1 x 10⁶ s ¹.

1.4 Applicability to petroleum products other than engine oils has not been determined in preparing this test method.

1.5 This test method uses the centipoise (cP) as the unit of viscosity. For information on the equivalent SI unit, the millipascal second (mPas) 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 determine the applicability of regulatory limitations prior to use.

Keywords

dynamic viscosity; high shear viscosity; high temperature viscosity; rotational viscometer

ICS Code

ICS Number Code 75.100 (Lubricants, industrial oils and related products)

DOI: 10.1520/D4683-04

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use Apparatus FIG. 1
3	Materials Sampling Preparation of the Apparatus Calibration FIG. 2
4	FIG. 3 TABLE 1 FIG. 4
5	Procedure
6	Calculation Report Precision and Bias Keywords

Additional information

Standard Title	D4683-04 Standard Test Method for Measuring Viscosity at High Shear Rate and High Temperature by Tapered Bearing Simulator
Published Code	ASTM
Publication Date	2004
Pages Count	7