ASTM-D1092:2011 Edition(Redline)

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D1092-11 Standard Test Method for Measuring Apparent Viscosity of Lubricating Greases (Redline)

Published By	Publication Date	Number of Pages
ASTM	2011	9

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Description

Significance and Use

Apparent viscosity versus shear rate information can be useful in predicting pressure drops in grease distribution systems under steady-state flow conditions at constant temperature.

1. Scope

1.1 This test method covers measurement, in poises, of the apparent viscosity of lubricating greases in the temperature range from − 54 to 38 ° C ( − 65 to 100 ° F). Measurements are limited to the range from 25 to 100 000 P at 0.1 s ^{− 1} and 1 to 100 P at 15 000 s ^{− 1} .

Note 1—At very low temperatures the shear rate range may be reduced because of the great force required to force grease through the smaller capillaries. Precision has not been established below 10 s ^{− 1} .

1.2 This standard uses inch-pound units as well as SI (acceptable metric) units. The values stated first are to be regarded as standard. The values given in parentheses are for information only. The capillary dimensions in SI units in Fig. A1.1 and Fig. A1.2 are standard.

1.3 WARNING Mercury has been designated by many regulatory agencies as a hazardous material that can cause central nervous system, kidney and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and EPA ’ s websitehttp://www.epa.gov/mercury/faq.htm

Additional information

Standard Title	D1092-11 Standard Test Method for Measuring Apparent Viscosity of Lubricating Greases (Redline)
Published Code	ASTM
Publication Date	2011
Pages Count	9

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ASTM-D1092:2011 Edition(Redline)

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