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Significance and Use
The loss of volatile materials from greases and oils can adversely effect the original performance characteristics of a lubricant and therefore could be a significant factor in evaluating a lubricant for a specific use. Such volatiles can also be considered contaminants in the environment in which the lubricant is to be used. Correlation between results from this test method and service performance has not been established.
The test can be run at any agreed upon temperature between 100 and 150°C (210 to 300°F).
Note 1—The specified flow of air, 2.58 ± 0.02 g/min, (2 L/min at standard temperature and pressure), assumes dry air. It is not known that the original work involved dry air but it has since been shown that this can be a factor in reproducibility and should be addressed. A dew point of less than 10°C at standard temperature and pressure will be satisfactory.
Note 2—To determine evaporation loss at temperatures above 150°C (300°F), see Test Methods D 2595
1.1 This test method covers the determination of the loss in mass by evaporation of lubricating greases and oils for applications where evaporation loss is a factor. Evaporation loss data can be obtained at any temperature in the range from 100 to 150°C (210 to 300°F).
1.2 The values stated in SI units are to be regarded as standard. The values in given in parentheses are for information only.
1.3 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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
D217 Test Methods for Cone Penetration of Lubricating Grease
D2595 Test Method for Evaporation Loss of Lubricating Greases Over Wide-Temperature Range
E1 Specification for ASTM Liquid-in-Glass Thermometers
ICS Number Code 75.100 (Lubricants, industrial oils and related products)
UNSPSC Code 15121902(Grease )
ASTM D972-02(2008), Standard Test Method for Evaporation Loss of Lubricating Greases and Oils, ASTM International, West Conshohocken, PA, 2008, www.astm.orgBack to Top