ASTM_D_943_-_04a_2010e1.pdf

Designation:D94304a(Reapproved 2010)1BS 2000-280:1999Standard Test Method forOxidation Characteristics of Inhibited Mineral Oils1This standard is issued under the fixed designation D943;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 U.S.Department of Defense.1NOTEUpdated Scope with regard to SI units and added mercury caveat editorially in October 2010.1.Scope1.1 This test method covers the evaluation of the oxidationstability of inhibited steam-turbine oils in the presence ofoxygen,water,and copper and iron metals at an elevatedtemperature.This test method is limited to a maximum testingtime of 10 000 h.This test method is also used for testing otheroils,such as hydraulic oils and circulating oils having a specificgravity less than that of water and containing rust and oxidationinhibitors.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.2.1 ExceptionThe values in parentheses in the figuresare provided for information for those using old equipmentbased on non-SI units.1.3 WARNINGMercury has been designated by manyregulatory agencies as a hazardous material that can causecentral nervous system,kidney and liver damage.Mercury,orits vapor,may be hazardous to health and corrosive tomaterials.Caution should be taken when handling mercury andmercury containing products.See the applicable product Ma-terial Safety Data Sheet(MSDS)for details and EPAswebsitehttp:/www.epa.gov/mercury/faq.htmfor addi-tional information.Users should be aware that selling mercuryand/or mercury containing products into your state or countrymay be prohibited by law.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 regulatory limitations prior to use.For specificwarning statements,see Section 6.2.Referenced Documents2.1 ASTM Standards:2A510 Specification for General Requirements for Wire Rodsand Coarse Round Wire,Carbon SteelB1 Specification for Hard-Drawn Copper WireD664 Test Method for Acid Number of Petroleum Productsby Potentiometric TitrationD1193 Specification for Reagent WaterD3244 Practice for Utilization of Test Data to DetermineConformance with SpecificationsD3339 Test Method forAcid Number of Petroleum Productsby Semi-Micro Color Indicator TitrationD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4310 Test Method for Determination of Sludging andCorrosion Tendencies of Inhibited Mineral OilsD5770 Test Method for Semiquantitative Micro Determina-tion of Acid Number of Lubricating Oils During Oxida-tion TestingE1 Specification for ASTM Liquid-in-Glass Thermometers2.2 Energy Institute Standards:3Specifications for IP Standard Thermometers2.3 British Standard:4BS 18293.Summary of Test Method3.1 The oil sample is contacted with oxygen in the presenceof water and an iron-copper catalyst at 95C.The test continuesuntil the measured acid number of the oil is 2.0 mg KOH/g orabove.The number of test hours required for the oil to reach2.0 mg KOH/g is the“oxidation lifetime.”1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.09.0C on Oxidation of Turbine Oils.Current edition approved Oct.1,2010.Published December 2010.Originallyapproved in 1947.Last previous edition approved in 2004 as D94304a.In 1976,this test method ceased to be a joint ASTM-IP standard.DOI:10.1520/D0943-10.2For 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 Energy Institute,61 New Cavendish St.,London,W1G 7AR,United Kingdom.4Available from British Standards Institute,389 Chiswick High Rd.,London,W4 4AL,United Kingdom.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Significance and Use4.1 This test method is widely used for specification pur-poses and is considered of value in estimating the oxidationstability of lubricants,especially those that are prone to watercontamination.It should be recognized,however,that correla-tion between results of this method and the oxidation stabilityof a lubricant in field service may vary markedly with fieldservice conditions and with various lubricants.The precisionstatement for this method was determined on steam turbineoils.NOTE1Furthermore,in the course of testing a lubricant b