1、Designation:D 5345 98Standard Specification forPrediluted Aqueous Ethylene Glycol Base Low-SilicateEngine Coolant(50 Volume Percent Minimum)for Heavy-Duty Engines Requiring an Initial Charge of SupplementalCoolant Additive(SCA)1This standard is issued under the fixed designation D 5345;the number im
2、mediately 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(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This spe
3、cification covers the requirements for a predi-luted aqueous ethylene glycol base low-silicate engine coolant(50 volume percent minimum)for cooling systems of heavy-duty engines.When used without further dilution,this productwill function effectively during both summer and winter toprovide protectio
4、n from corrosion,freezing at least to 36.7C(34.0F),and boiling at least to 108C(226F).1.2 Prediluted coolant meeting this specification requiresboth an initial charge of a supplemental coolant additive(SCA)and regular maintenance doses of an SCA to continue theprotection in certain operating heavy-d
5、uty engine coolingsystems,particularly those of the wet cylinder liner-in-blockdesign.The SCA additions are defined by and are the primaryresponsibility of the engine or vehicle manufacturer.If theyprovide no instructions,follow the SCA suppliers recom-mended instructions.1.3 The values stated in SI
6、 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 any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health pra
7、ctices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:D 512 Test Methods for Chloride Ion in Water2D 516 Test Method for Sulfate Ion in Water2D 1119 Test Method for Ash Content of Engine Coolantsand Antirusts3D 1120 Test Method for Bo
8、iling Point of Engine Coolants3D 1121 Test Method for Reserve Alkalinity of EngineCoolants and Antirusts3D 1122 Test Method for Density or Relative Density ofEngine Coolants Concentrates and Engine Coolants by theHydrometer3D 1126 Test Method for Hardness in Water2D 1177 Test Method for Freezing Poi
9、nt of Aqueous EngineCoolants3D 1193 Specification for Reagent Water2D 1287 Test Method for pH of Engine Coolants and Anti-rusts3D 1293 Test Methods for pH of Water2D 1384 Test Method for Corrosion Test for Engine Coolantsin Glassware3D 1881 Test Method for Foaming Tendencies of EngineCoolants in Gla
10、ssware3D 1882 Test Method for Effect of Cooling System ChemicalSolutions on Organic Finishes for Automotive Vehicles3D 1888 Test Methods for Particulate and Dissolved Matterin Water4D 2570 Test Method for Simulated Service Corrosion Test-ing of Engine Coolants3D 2809 Test Method for Cavitation Corro
11、sion and Erosion-Corrosion Characteristics of Aluminum Pumps with En-gine Coolants3D 3306 Specification for Ethylene Glycol Base EngineCoolant for Automobile and Light Duty Service3D 3321 Test Method for Use of the Refractometer for FieldTest Determination of the Freezing Point of AqueousEngine Cool
12、ants3D 4327 Test Method for Anions in Water by ChemicallySuppressed Ion Chromatography2D 4656 Specification for a Prediluted Aqueous EthyleneGlycol Based Engine Coolant(50 Volume%Minimum)for Automobiles and Light-Duty Service3D 4985 Specification for Low Silicate Ethylene GlycolBase Engine Coolant f
13、or Heavy Duty Engines Requiring aPre-Charge of Supplemental Coolant Additive(SCA)33.Terminology3.1 Definitions of Terms Specific to This Standard:1This specification is under the jurisdiction of ASTM Committee D-15 onEngine Coolants and is the direct responsibility of Subcommittee D15.13 onPredilute
14、d Engine Coolant.Current edition approved October 10,1998.Published January 1999.Originallypublished as D 5345 93.Last previous edition D 5345 95.2Annual Book of ASTM Standards,Vol 11.01.3Annual Book of ASTM Standards,Vol 15.05.4DiscontinuedSee 1990 Annual Book of ASTM Standards,Vol 11.01.1AMERICAN
15、SOCIETY FOR TESTING AND MATERIALS100 Barr Harbor Dr.,West Conshohocken,PA 19428Reprinted from the Annual Book of ASTM Standards.Copyright ASTM3.1.1 heavy duty enginea diesel,gasoline,or similarlyfueled internal combustion engine,having operating character-istics of a long duty cycle at or near maxim
16、um rated conditions.3.1.2 DiscussionSuch engines are typically used in off-highway machinery for agriculture,mining,earth-moving,andconstruction;Classes 5 through 8 over the road trucks andbuses;high output stationary engine installations;and locomo-tive and marine installations(see Specifications D 3306 andD 4656 for coolant requirements for automobiles,vans,andpickup trucks,Classes 1 through 4).3.1.3 supplement coolant additive(SCA)a material addedto the cooling system of a heavy-duty engine t
