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ASTM D217-10

Historical Revision

Standard Test Methods for Cone Penetration of Lubricating Grease

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1.1 These test methods cover four procedures for measuring the consistency of lubricating greases by the penetration of a cone of specified dimensions, mass, and finish. The penetration is measured in tenths of a millimetre.

Note 1—The National Lubricating Grease Institute (NLGI) classified greases according to their consistency as measured by the worked penetration. The classification system is as follows:


These cone penetration tests not only evaluate the consistency of lubricating greases over the full range of NLGI numbers from 000 to 6, but also evaluate the consistency of stiff greases having penetration numbers less than 85. In contrast, Test Method D937 is aimed at petrolatums and Test Method D1403 uses less precise one-quarter and one-half scale equipment intended for use when the sample quantity is limited.

Cone penetration test results provide one measure of the consistency of a grease. Worked penetration results are required to determine to which NLGI consistency grade a grease belongs. Undisturbed penetration results provide a means of evaluating the effect of storage conditions on grease consistency.

Although no correlation has been developed between cone penetration results and field service, the cone penetrations obtained by the four procedures are widely used for specification purposes, such as in users' material specifications and suppliers' manufacturing specifications.

SDO ASTM: ASTM International
Document Number D217
Publication Date May 1, 2010
Language en - English
Page Count 14
Revision Level 10
Supercedes
Committee D02.G0.02
Publish Date Document Id Type View
Dec. 1, 2021 D0217-21A Revision
July 1, 2021 D0217-21 Revision
Nov. 1, 2019 D0217-19B Revision
July 1, 2019 D0217-19A Revision
May 1, 2019 D0217-19 Revision
May 1, 2017 D0217-17 Revision
Oct. 1, 2016 D0217-16 Revision
May 1, 2010 D0217-10 Revision
Dec. 10, 2002 D0217-02 Revision
Nov. 10, 1997 D0217-97 Revision
Nov. 1, 2007 D0217-02R07 Reaffirmation