1、Designation:D580015aStandard Test Method forEvaporation Loss of Lubricating Oils by the Noack Method1This standard is issued under the fixed designation D5800;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.
2、A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers three procedures for determin-ing the evaporation loss of lubricating oils(particularly engineoils).Procedure A
3、uses the Noack evaporative tester equip-ment;Procedure B uses the automated non-Woods metalNoack evaporative apparatus;and Procedure C uses Selby-Noack volatility test equipment.The test method relates to oneset of operating conditions but may be readily adapted to otherconditions when required.1.2
4、Noack results determined using Procedures A and Bshow consistent differences.Procedure A gives slightly lowerresults versus Procedure B on formulated engine oils,whileProcedure A gives higher results versus Procedure B onbasestocks.1.3 The values stated in SI units are to be regarded asstandard.No o
5、ther units of measurement are included in thisstandard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of
6、 regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD6299 Practice for Applying Statistical Quality Assuranceand Control Charting Te
7、chniques to Evaluate AnalyticalMeasurement System PerformanceD6300 Practice for Determination of Precision and BiasData for Use in Test Methods for Petroleum Products andLubricants2.2 DIN Standards:3DIN 1725 Specification for Aluminum AlloysDIN 12785 Specifications for Glass Thermometers3.Terminolog
8、y3.1 Definitions of Terms Specific to This Standard:3.1.1 evaporation lossof a lubricating oil by the Noackmethod,that mass of volatile oil vapors lost when the oil isheated in a test crucible through which a constant flow of air isdrawn.3.1.2 volatility,nthe tendency of a liquid to form a vapor.4.S
9、ummary of Test Method4.1 A measured quantity of sample is placed in an evapo-ration crucible or reaction flask that is then heated to 250 Cwith a constant flow of air drawn through it for 60 min.Theloss in mass of the oil is determined.4.2 Interlaboratory tests have shown that Procedure A,Procedure
10、B,and Procedure C yield essentially equivalentresults,with a correlation coefficient of R2=0.996.See theresearch report for the Selby-Noack interlaboratory study.5.Significance and Use5.1 The evaporation loss is of particular importance inengine lubrication.Where high temperatures occur,portions ofa
11、n oil can evaporate.5.2 Evaporation may contribute to oil consumption in anengine and can lead to a change in the properties of an oil.5.3 Many engine manufacturers specify a maximum allow-able evaporation loss.5.4 Some engine manufacturers,when specifying a maxi-mum allowable evaporation loss,quote
12、 this test method alongwith the specifications.5.5 Procedure C,using the Selby-Noack apparatus,alsopermits collection of the volatile oil vapors for determinationof their physical and chemical properties.Elemental analysis of1This test method is under the jurisdiction of ASTM Committee D02 onPetrole
13、um Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.06 on Analysis of Liquid Fuels and Lubricants.Current edition approved July 1,2015.Published July 2015.Originally approvedin 1995.Last previous edition approved in 2015 as D5800 15.DOI:10.1520/D5800-15A.2For
14、referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Deutsches Institut fr Normunge,Beuth Verlag GmbH,Burg-g
15、rafen Strasse 6,1000 Berlin 30,Germany.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 the collected volatiles may be helpful in identifying compo-nents such as phosphorous,
16、which has been linked to prematuredegradation of the emission system catalyst.Procedure A6.Apparatus6.1 Noack Evaporative Tester,comprising the following:6.1.1 Electrically Heated Block Unit,made from a mal-leable aluminum alloy(see DIN 1725,Sheet 1),insulated at thejacket and base against loss of heat.(WarningThis block isheated to 250 C.)The block is heated electrically by a baseand jacket heater,having a total power consumption of 1 kW to1.2 kW.In this respect the difference between both indi