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Designation:D 2265-00An American Nafional StandardNTERNATIONALStandard Test Method forDropping Point of Lubricating Grease Over WideTemperature Range1This standard is issued under the fixed designation D2265;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon ()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1.Scopepoint temperature.This corrected value is recorded as the1.1 This test method covers the determination of the drop-dropping point of the grease.ping point of lubricating grease.3.1.2 lubricating grease,na semi-fluid to solid product of1.2 This standard does not purport to address all of thea thickener in a liquid lubricant.safety concerns,if any,associated with its use.It is the3.1.2.1 Discussion-The dispersion of the thickener forms aresponsibility of the user of this standard to establish appro-two-phase system and immobilizes the liquid lubricant bypriate safety and health practices and determine the applica-surface tension and other physical forces.Other ingredients arebility of regulatory limitations prior to use.commonly included to impart special properties.D2173.1.3 observed dropping point,nthe value noted on the2.Referenced Documentsthemmometer monitoring the intemal temperature of the grease2.1 ASTM Standards:test cup when the first drop of material falls from the test cupD 217 Test Methods for Cone Penetration of Lubricatingand reaches the bottom of the test tube.Grease23.1.4 thickener,nin lubricating grease,a substance com-D 235 Specifi cations for Mineral Spirits(Petroleum Spirits)posed of fi nely-divided particles dispersed in a liquid to formHydrocarbon Dry Cleaning Solvent3the product's structure.D 566 Test Method for Dropping Point of Lubricating3.1.4.1 Discussion-Thickeners can be fi bers (such as vari-Grease2ous metallic soaps)or plates or spheres (such as certainD 3244 Practice for Utilization of Test Data to Determinenon-soap thickeners),which are insoluble or,at most,only veryConformance with Specifi cations"slightly soluble in the liquid lubricant.The general require-E 1 Specifi cation for ASTM Thermometers"ments are that the solid particles be extremely small,uniformlydispersed,and capable of fomming a relatively stable,gel-like3.Terminologystructure with the liquid lubricant.D2173.1 Definitions:3.1.1 dropping point,na numerical value assigned to a4.Summary of Test Methodgrease composition representing the corrected temperature at4.1 A grease sample in a grease test cup is supported in awhich the first drop of material falls from the test cup andtest tube placed in an aluminum block oven at a preset constantreaches the bottom of the test tube.temperature.A sample thermometer is placed in the tube and so3.1.1.1 Discussion-In the normal and prope
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