ASTM_D_1384_-_05_2012.pdf

Designation:D138405(Reapproved 2012)Standard Test Method forCorrosion Test for Engine Coolants in Glassware1This standard is issued under the fixed designation D1384;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.Scope1.1 This test method covers a simple beaker-type procedurefor evaluating the effects of engine coolants on metal speci-mens under controlled laboratory conditions(see AppendixX1).NOTE1For more information on engine coolants,see(Refs 1-8).21.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.3 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.Specific hazardsstatements are given in 10.1.7.2,10.1.7.3,and 10.1.7.4.2.Referenced Documents2.1 ASTM Standards:3B32 Specification for Solder MetalB36/B36M Specification for Brass Plate,Sheet,Strip,AndRolled BarD1176 Practice for Sampling and Preparing Aqueous Solu-tions of Engine Coolants orAntirusts for Testing PurposesE1 Specification for ASTM Liquid-in-Glass ThermometersE178 Practice for Dealing With Outlying ObservationsE230 Specification and Temperature-Electromotive Force(EMF)Tables for Standardized ThermocouplesG31 Guide for Laboratory Immersion Corrosion Testing ofMetals2.2 ASTM Adjuncts:All-glass apparatus for corrosion test(2 drawings)43.Summary of Test Method3.1 In this test method,specimens of metals typical of thosepresent in engine cooling systems are totally immersed inaerated engine coolant solutions for 336 h at 88C(190F).Thecorrosion-inhibitive properties of the test solution are evaluatedon the basis of the weight changes incurred by the specimens.Each test is run in triplicate,and the average weight change isdetermined for each metal.A single test may occasionally becompletely out of line(see 11.2).4.Significance and Use4.1 This test method will generally distinguish betweencoolants that are definitely deleterious from the corrosionstandpoint and those that are suitable for further evaluation.However,the results of this test method cannot stand alone asevidence of satisfactory corrosion inhibition.The actual ser-vice value of an engine coolant formulation can be determinedonly by more comprehensive bench,dynamometer,and fieldtests.5.Apparatus5.1 ContainerA 1000-mL,tall-form,spoutless beaker,made of heat-resistant glass,for containing the engine coolantsolution and test specimens.The beaker shall be tightly closedwith a No.15 rubber stopper,having drill holes to accommo-date a water condenser,an aerator tube,and a thermometer asshown in Fig.1.Optionally,an all-glass apparatus may beused.45.2 CondenserA water condenser of the reflux,glass-tubetype,having a 400-mm(16-in.)condenser jacket.1This test method is under the jurisdiction of ASTM Committee D15 on EngineCoolants and Related Fluids and is the direct responsibility of SubcommitteeD15.06 on Glassware Performance Tests.Current edition approved April 1,2012.Published June 2012.Originallyapproved in 1955.Last previous edition approved in 2005 as D1384 04(2005).DOI:10.1520/D1384-05R12.2The boldface numbers in parentheses refer to the list of references at the end ofthis standard.3For 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.4Details available from:ASTM International Headquarters.Order Adjunct No.ADJD1384.Original adjunct produced in(1980).Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.3 Aerator Tube A gas-dispersion tube,porosity size12-C,5to ensure continuous aeration without plugging.5.4 Temperature Measuring Instrument(EnvironmentallySafe Thermometer or Thermocouple)An ASTM PartialImmersion Temperature Measuring Instrument having a rangefrom 20 to 150C(0 to 302F)and conforming to therequirements for Thermometer 1C(1F),as prescribed inSpecification E1 or Thermocouple as summarized in Specifi-cation E230.5.5 HeaterAconstant-temperature bath containing a high-boiling liquid(see Note 2)that is capable of giving continuousservice with the specified temperature control.6The size of thebath will be determined by the number of corrosion tests thatare to be run concurrently.6.Metal Test SpecimensNOTE2The specimens prescribed in this test method have beenaccepted by automobile manufacturers,but their composition may not bethe same as that of alloys currently used for engine cooling systemcomponents.Therefore