1、Designation:D498510(Reapproved 2015)Standard Specification forLow Silicate Ethylene Glycol Base Engine Coolant for HeavyDuty Engines Requiring a Pre-Charge of SupplementalCoolant Additive(SCA)1This standard is issued under the fixed designation D4985;the number immediately following the designation
2、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 t
3、he U.S.Department of Defense.1.Scope*1.1 This specification covers the requirements for lowsilicate ethylene glycol base engine coolants for coolingsystems of heavy-duty engines.When concentrates are used at40 to 60%concentration by volume in water,or whenprediluted glycol base engine coolants(50 vo
4、lume%mini-mum)are used without further dilution,they will functioneffectively to provide protection against corrosion,freezing toat least 36.4C(33.5F),and boiling to at least 108C(226F).NOTE1This specification is based on the knowledge of the perfor-mance of engine coolants prepared from new or virg
5、in ingredients.Aseparate specification exists(Specification D6210)for heavy-duty enginecoolants which may be prepared from recycled or reprocessed usedcoolant or reprocessed industrial-source ethylene glycol.1.2 Coolants meeting this specification require an initialcharge of a supplemental coolant a
6、dditive(SCA)and requireregular maintenance doses of an SCA to continue the protec-tion in certain operating heavy-duty engine cooling systems,particularly those of the wet cylinder liner-in-block design.TheSCAadditions are defined by and are the primary responsibilityof the engine manufacturer or ve
7、hicle manufacturer.If theyprovide no instructions,follow the SCA suppliers recom-mended instructions.1.3 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.4 This standard does not purport to address all of thesafety concerns,if
8、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.2.Referenced Documents2.1 ASTM Standards:2D512 Test Methods for Chloride Ion In WaterD516 Tes
9、t Method for Sulfate Ion in WaterD1119 Test Method for Percent Ash Content of EngineCoolantsD1120 Test Method for Boiling Point of Engine CoolantsD1121 Test Method for Reserve Alkalinity of Engine Cool-ants and AntirustsD1122 Test Method for Density or Relative Density ofEngine Coolant Concentrates
10、and Engine Coolants By TheHydrometerD1123 Test Methods for Water in Engine Coolant Concen-trate by the Karl Fischer Reagent MethodD1126 Test Method for Hardness in WaterD1177 Test Method for Freezing Point of Aqueous EngineCoolantsD1287 Test Method for pH of Engine Coolants andAntirustsD1293 Test Me
11、thods for pH of WaterD1384 Test Method for Corrosion Test for Engine Coolantsin GlasswareD1881 Test Method for Foaming Tendencies of EngineCoolants in GlasswareD1882 Test Method for Effect of Cooling System ChemicalSolutions on Organic Finishes for Automotive VehiclesD2570 Test Method for Simulated
12、Service Corrosion Testingof Engine CoolantsD2809 Test Method for Cavitation Corrosion and Erosion-Corrosion Characteristics of Aluminum Pumps With En-gine CoolantsD3306 Specification for Glycol Base Engine Coolant forAutomobile and Light-Duty ServiceD3634 Test Method for Trace Chloride Ion in Engine
13、 Cool-ants1This specification is under the jurisdiction ofASTM Committee D15 on EngineCoolants and Related Fluids and is the direct responsibility of SubcommitteeD15.07 on Specifications.Current edition approved May 1,2015.Published June 2015.Originallyapproved in 1989.Last previous edition approved
14、 in 2010 as D4985 10.DOI:10.1520/D4985-10R15.2For 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.*A Summary of Changes
15、 section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 D4327 Test Method for Anions in Water by Suppressed IonChromatographyD4725 Terminology for Engine Coolants and Related FluidsD5827 Test Method for
16、 Analysis of Engine Coolant forChloride and Other Anions by Ion ChromatographyD5931 Test Method for Density and Relative Density ofEngine Coolant Concentrates and Aqueous Engine Cool-ants by Digital Density MeterD6129 Test Method for Silicon in Engine Coolant Concen-trates by Atomic Absorption SpectroscopyD6130 Test Method for Determination of Silicon and OtherElements in Engine Coolant by Inductively CoupledPlasma-Atomic Emission SpectroscopyD6210 Specification for Fully-Formulated Glycol Base
