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ASTM D 217 Document Information:
Title
Standard Test Methods for Cone Penetration of Lubricating Grease
ASTM International
Publication Date:
Dec 10, 2002
Scope:
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)2 classified greases according to their
consistency as measured by the worked penetration.
The procedures for unworked, worked, and prolonged worked
penetration are applicable to greases having penetrations between
85 and 475, that is, to greases with consistency numbers between
NLGI 6 and NLGI 000. An undisturbed penetration test, described in
Appendix X1, is similar to the unworked penetration test.
The block penetration procedure is applicable to greases that
are sufficiently hard to hold their shape. Such greases usually
have penetrations below eighty-five tenths of a millimetre.
None of the four procedures is considered suitable for the
measurement of the consistency of petrolatums by penetration. Test
Method D 937 should be used for such products.
The dimensions of the equipment described in these test methods
are given in inches and fractions of an inch. These units were
retained because a vast body of data has been obtained using
equipment with the dimensions shown. Metric equivalency tables are
provided with each figure. Temperatures and other dimensions are
given in the preferred SI units; the values shown in parentheses
are provided for information.
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.
2 National Lubricating Grease Institute, 4635
Wyandotte St., Kansas City, MO 64112-1596.
Keywords:
- consistency
- grease
- lubricating grease
- penetration
- penetrometer
- worked penetration
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