1、Designation:D6557181Standard Test Method forEvaluation of Rust Preventive Characteristics of AutomotiveEngine Oils1This standard is issued under the fixed designation D6557;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of
2、last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEEditorially updated TMC governance information in June 2022.INTRODUCTIONPortions of this test method are written for use by labor
3、atories that make use of ASTM TestMonitoring Center(TMC)2services(see Annex A4 to Annex A7).The TMC provides reference oils,and engineering and statistical services to laboratories that desireto produce test results that are statistically similar to those produced by laboratories previouslycalibrate
4、d by the TMC.In general,the test purchaser decides if a calibrated test stand is to be used.Organizations such astheAmerican Chemistry Council require that a laboratory utilize the TMC services as part of their testregistration process.In addition,the American Petroleum Institute and the Gear Lubric
5、ant ReviewCommittee of the Lubricant Review Institute(SAE International)require that a laboratory use theTMC services in seeking qualification of oils against their specifications.The advantage of using the TMC services to calibrate test stands is that the test laboratory(andhence the test purchaser
6、)has an assurance that the test stand was operating at the proper level of testseverity.It should also be borne in mind that results obtained in a non-calibrated test stand may notbe the same as those obtained in a test stand participating in the ASTM TMC services process.ASTM International policy i
7、s to encourage the development of test procedures based on genericequipment.It is recognized that there are occasions where critical/sole-source equipment has beenapproved by the technical committee(surveillance panel/task force)and is required by the testprocedure.The technical committee that overs
8、ees the test procedure is encouraged to clearly identifyif the part is considered critical in the test procedure.If a part is deemed to be critical,ASTMencourages alternative suppliers to be given the opportunity for consideration of supplying the criticalpart/component providing they meet the appro
9、val process set forth by the technical committeeAn alternative supplier can start the process by initiating contact with the technical committee(current chairs shown on ASTM TMC website).The supplier should advise on the details of the partthat is intended to be supplied.The technical committee will
10、 review the request and determinefeasibility of an alternative supplier for the requested replacement critical part.In the event that areplacement critical part has been identified and proven equivalent the sole-source supplier footnoteshall be removed from the test procedure.1.Scope*1.1 This test m
11、ethod covers a Ball Rust Test(BRT)proce-dure for evaluating the anti-rust ability of fluid lubricants.Theprocedure is particularly suitable for the evaluation of automo-tive engine oils under low-temperature,acidic service condi-tions.1This test method is under the jurisdiction of ASTM Committee D02
12、 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.B0.01 on Passenger Car Engine Oils.Current edition approved Oct.1,2018.Published October 2018.Originallyapproved in 2000.Last previous edition approved in 2013 as D6557 13.DOI:10.1520/D6557-18E01.2U
13、ntil the next revision of this test method,the ASTM Test Monitoring Centerwill update changes in the test method by means of information letters.Informationletters may be obtained from the ASTM Test Monitoring Center,203 ArmstrongDrive,Freeport,PA16229.This test method is supplemented by Information
14、 Lettersand Memoranda issued by the ASTM TMC.This edition incorporates revisions inall Information Letters through No.18-1.*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
15、 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 Organization Technical Barriers to Trade(TBT)
16、Committee.11.2 The values stated in SI units are to be regarded asstandard.The values given in parentheses after SI units areprovided for information only and are not considered standard.1.2.1 ExceptionsWhere there is no direct equivalent,suchas the units for screw threads,national pipe threads/diameters,and tubing size.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-pri
