ASTM_D_4310_-_20a.pdf

Designation:D431020aStandard Test Method forDetermination of Sludging and Corrosion Tendencies ofInhibited Mineral Oils1This standard is issued under the fixed designation D4310;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.1.Scope*1.1 This test method covers and is used to evaluate thetendency of inhibited mineral oil based steam turbine lubri-cants and mineral oil based anti-wear hydraulic oils to corrodecopper catalyst metal and to form sludge during oxidation inthe presence of oxygen,water,and copper and iron metals at anelevated temperature.The test method is also used for testingcirculating oils having a specific gravity less than that of waterand containing rust and oxidation inhibitors.NOTE1During round robin testing copper and iron in the oil,waterand sludge phases were measured.However,the values for the total ironwere found to be so low(that is,below 0.8 mg),that statistical analysiswas inappropriate.The results of the cooperative test program areavailable(see Section 16).1.2 This test method is a modification of Test Method D943where the oxidation stability of the same kinds of oils isdetermined by following the acid number of oil.The number oftest hours required for the oil to reach an acid number of2.0 mg KOH/g is the oxidation lifetime.1.3 Procedure A of this test method requires the determina-tion and report of the weight of the sludge and the total amountof copper in the oil,water,and sludge phases.Procedure Brequires the sludge determination only.The acid numberdetermination is optional for both procedures.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 WARNINGMercury has been designated by manyregulatory agencies as a hazardous substance that can causeserious medical issues.Mercury,or its vapor,has been dem-onstrated to be hazardous to health and corrosive to materials.Use Caution when handling mercury and mercury-containingproducts.See the applicable product Safety Data Sheet(SDS)for additional information.The potential exists that sellingmercury or mercury-containing products,or both,is prohibitedby local or national law.Users must determine legality of salesin their location.1.6 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.For specific warning statements,see Section 7 and X1.1.5.1.7 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2A510 Specification for General Requirements for Wire Rodsand Coarse Round Wire,Carbon Steel(Metric)A0510_A0510MB1 Specification for Hard-Drawn Copper WireD664 Test Method for Acid Number of Petroleum Productsby Potentiometric TitrationD874 Test Method for Sulfated Ash from Lubricating Oilsand AdditivesD943 Test Method for Oxidation Characteristics of InhibitedMineral OilsD1193 Specification for Reagent WaterD3339 Test Method forAcid Number of Petroleum Productsby Semi-Micro Color Indicator TitrationD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsE1 Specification for ASTM Liquid-in-Glass Thermometers2.2 Energy Institute Standard:3Specification for IP Standard Thermometers1This 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 June 1,2020.Published July 2020.Originally approvedin 1983.Last previous edition approved in 2020 as D4310 20.DOI:10.1520/D4310-20A.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,U.K.,http:/www.energyinst.org.*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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade O