ASTM D2265-15
(Test Method)Standard Test Method for Dropping Point of Lubricating Grease Over Wide Temperature Range
Standard Test Method for Dropping Point of Lubricating Grease Over Wide Temperature Range
SIGNIFICANCE AND USE
5.1 The dropping point is useful to assist in identifying the grease as to type and for establishing and maintaining bench marks for quality control. The results are to be considered to have only limited significance with respect to service performance because dropping point is a static test.
5.2 Cooperative testing3 indicates that, in general, dropping points by Test Method D2265 and Test Method D566 are in agreement up to 260 °C. In cases where results differ, there is no known significance. However, agreement between the manufacturer and purchaser as to test method used is advisable.
SCOPE
1.1 This test method covers the determination of the dropping point of lubricating grease.
1.2 This test method uses mercury thermometers. 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 website—http://www.epa.gov/mercury/faq.htm—for additional information. Users should be aware that selling mercury and/or mercury containing products into your state or country may be prohibited by law. The responsible subcommittee, D02.G0.03, continues to explore alternatives to eventually replace the mercury thermometers.
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.
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Designation: D2265 − 15
Standard Test Method for
Dropping Point of Lubricating Grease Over Wide
1
Temperature Range
This standard is issued under the fixed designation D2265; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 3. Terminology
3.1 Definitions:
1.1 This test method covers the determination of the drop-
ping point of lubricating grease.
3.1.1 dropping point, n—a numerical value assigned to a
grease composition representing the corrected temperature at
1.2 This test method uses mercury thermometers.
which the first drop of material falls from the test cup and
WARNING—Mercury has been designated by many regula-
reaches the bottom of the test tube.
tory agencies as a hazardous material that can cause central
3.1.1.1 Discussion—In the normal and proper operation of
nervous system, kidney and liver damage. Mercury, or its
this test method, the observed dropping point is corrected by
vapor, may be hazardous to health and corrosive to materials.
adding to it a value representing one third of the difference
Caution should be taken when handling mercury and mercury
betweentheovenblocktemperatureandtheobserveddropping
containing products. See the applicable product Material
point temperature. This corrected value is recorded as the
Safety Data Sheet (MSDS) for details and EPA’s website—
dropping point of the grease.
http://www.epa.gov/mercury/faq.htm—for additional informa-
tion. Users should be aware that selling mercury and/or
3.1.2 lubricating grease, n—a semi-fluid to solid product of
mercury containing products into your state or country may be
a thickener in a liquid lubricant.
prohibited by law. The responsible subcommittee, D02.G0.03,
3.1.2.1 Discussion—Thedispersionofthethickenerformsa
continues to explore alternatives to eventually replace the
two-phase system and immobilizes the liquid lubricant by
mercury thermometers. This standard does not purport to
surfacetensionandotherphysicalforces.Otheringredientsare
address all of the safety concerns, if any, associated with its
commonly included to impart special properties. D217
use. It is the responsibility of the user of this standard to
3.1.3 observed dropping point, n—the value noted on the
establish appropriate safety and health practices and deter-
thermometer monitoring the internal temperature of the grease
mine the applicability of regulatory limitations prior to use.
test cup when the first drop of material falls from the test cup
and reaches the bottom of the test tube.
2. Referenced Documents
2
3.1.4 thickener, n—in lubricating grease, a substance com-
2.1 ASTM Standards:
posed of finely-divided particles dispersed in a liquid to form
D217Test Methods for Cone Penetration of Lubricating
the product’s structure.
Grease
3.1.4.1 Discussion—Thickeners can be fibers (such as vari-
D566TestMethodforDroppingPointofLubricatingGrease
ous metallic soaps) or plates or spheres (such as certain
D3244Practice for Utilization of Test Data to Determine
non-soapthickeners),whichareinsolubleor,atmost,onlyvery
Conformance with Specifications
slightly soluble in the liquid lubricant. The general require-
E1Specification for ASTM Liquid-in-Glass Thermometers
mentsarethatthesolidparticlesbeextremelysmall,uniformly
dispersed, and capable of forming a relatively stable, gel-like
structure with the liquid lubricant. D217
1
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.G0.03 on Physical Tests. 4. Summary of Test Method
Current edition approved April 1, 2015. Published May 2015. Originally
4.1 A grease sample in a grease test cup is supported in a
approved in 1964. Last previous edition approved in 2014 as D2265–06 (2014).
DOI: 10.1520/D2265-15.
testtubeplacedinanaluminumblockovenatapresetconstant
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
temperature.Asamplethermometerisplacedinthetubeandso
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
positioned that it measures the temperature in the sample cup
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. without coming in contact with the grease.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2265 − 15
(a) Dimens
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2265 − 06 (Reapproved 2014) D2265 − 15
Standard Test Method for
Dropping Point of Lubricating Grease Over Wide
1
Temperature Range
This standard is issued under the fixed designation D2265; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope Scope*
1.1 This test method covers the determination of the dropping point of lubricating grease.
1.2 This test method uses mercury thermometers. 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 website—http://www.epa.gov/mercury/faq.htm—for
additional information. Users should be aware that selling mercury and/or mercury containing products into your state or country
may be prohibited by law. The responsible subcommittee, D02.G0.03, continues to explore alternatives to eventually replace the
mercury thermometers. 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. Referenced Documents
2
2.1 ASTM Standards:
D217 Test Methods for Cone Penetration of Lubricating Grease
D566 Test Method for Dropping Point of Lubricating Grease
D3244 Practice for Utilization of Test Data to Determine Conformance with Specifications
E1 Specification for ASTM Liquid-in-Glass Thermometers
3. Terminology
3.1 Definitions:
3.1.1 dropping point, n—a numerical value assigned to a grease composition representing the corrected temperature at which
the first drop of material falls from the test cup and reaches the bottom of the test tube.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.G0.03 on Physical Tests.
Current edition approved Nov. 1, 2014April 1, 2015. Published November 2014May 2015. Originally approved in 1964. Last previous edition approved in 20062014 as
D2265 – 06.D2265 – 06 (2014). DOI: 10.1520/D2265-06R14.10.1520/D2265-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3.1.1.1 Discussion—
In the normal and proper operation of this test method, the observed dropping point is corrected by adding to it a value representing
one third of the difference between the oven block temperature and the observed dropping point temperature. This corrected value
is recorded as the dropping point of the grease.
3.1.2 lubricating grease, n—a semi-fluid to solid product of a thickener in a liquid lubricant.
3.1.2.1 Discussion—
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2265 − 15
The dispersion of the thickener forms a two-phase system and immobilizes the liquid lubricant by surface tension and other
physical forces. Other ingredients are commonly included to impart special properties. D217
3.1.3 observed dropping point, n—the value noted on the thermometer monitoring the internal temperature of the grease test cup
when the first drop of material falls from the test cup and reaches the bottom of the test tube.
3.1.4 thickener, n—in lubricating grease, a substance composed of finely-divided particles dispersed in a liquid to form the
product’s structure.
3.1.4.1 Discussion—
Thickeners can be fibers (such as various metallic soaps) or plates or spheres (such as certain non-soap thickeners), which are
insoluble or, at most, only very slightly soluble in the liquid lubricant. The general requirements are that the solid particles be
extremely small, unif
...
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