1、Designation:D771512Standard Specification forFully-Formulated Glycerin Base Engine Coolant for Heavy-Duty Engines1This standard is issued under the fixed designation D7715;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of l
2、ast 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 specification covers the requirements for fully-formulated glycerin base coolants for cooling systems ofheavy-duty engi
3、nes.When concentrates are used at 40 to 60%glycerin concentration by volume in water of suitable quality(see Appendix X1),or when prediluted glycerin base enginecoolants(50 volume%min)are used without further dilution,they will function effectively during both winter and summer toprovide protection
4、against corrosion,cavitation,freezing,andboiling.1.2 This specification is intended to cover the requirementsfor engine coolants prepared from virgin glycerin.NOTE1This specification is based on the knowledge of the perfor-mance of engine coolants prepared from new or virgin ingredients thatcomply w
5、ith Specification D7714.1.3 The coolants governed by this specification are catego-rized as follows:Coolant TypeDescriptionV-FFGlycerin base concentrateVI-FFGlycerin predilute(50 vol%)1.4 Coolant concentrates meeting this specification do notrequire addition of supplemental coolant additive(SCA)unti
6、lthe first maintenance interval when a maintenance dose of SCAis required to continue protection in certain heavy duty enginecooling systems,particularly those of the wet cylinder liner-in-block design.The SCA additions are defined by and are theprimary responsibility of the engine manufacturer or v
7、ehiclemanufacturer.If they provide no instructions,follow the SCAsuppliers instructions.1.5 The values stated in SI units are to be regarded asstandard.The values given in parentheses are for informationonly.1.6 This standard does not purport to address all of thesafety concerns,if any,associated wi
8、th 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:2D1126 Test Method for Hardness in WaterD1293 Test Methods for pH of
9、WaterD3306 Specification for Glycol Base Engine Coolant forAutomobile and Light-Duty ServiceD3321 Test Method for Use of the Refractometer for FieldTest Determination of the Freezing Point of AqueousEngine CoolantsD4327 Test Method for Anions in Water by Suppressed IonChromatographyD4725 Terminology
10、 for Engine Coolants and Related FluidsD5828 Test Method for Compatibility of SupplementalCoolant Additives(SCAs)and Engine Coolant Concen-tratesD6130 Test Method for Determination of Silicon and OtherElements in Engine Coolant by Inductively CoupledPlasma-Atomic Emission SpectroscopyD7583 Test Meth
11、od for John Deere Coolant Cavitation TestD7714 Specification for Glycerin Base Engine Coolant forAutomobile and Light-Duty ServiceE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 Other Standards:3Federal Method 2540B Total Dissolved Solids Dried a
12、t 103-105C3.Terminology3.1 Definitions:3.1.1 supplemental coolant additive(SCA),nadditiveused in conventionally inhibited heavy duty engine coolantsrequired to maintain protection against general corrosion,cylinder liner pitting,and scaling in heavy duty engines.1This specification is under the juri
13、sdiction ofASTM Committee D15 on EngineCoolants and Related Fluids and is the direct responsibility of SubcommitteeD15.93 on Research and Long Range Planning.Current edition approved June 1,2012.Published June 2012.Originallyapproved in 2011.Last previous edition approved in 2011 as D7715 11.DOI:10.
14、1520/D7715-12.2For 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.3Standard Method for the Examination of Water and Wa
15、stewater,AmericanPublic Health Association,et al,1015 15th Street,N.W.Washington,DC 20005.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.2 glycerin base engine coolant,nengine coolant inwhich the freeze point depressant is 1,2,3 prop
16、ane triol,withinhibitors to minimize foaming and corrosion.3.1.3 For other definitions and terms used in thisspecification,refer to Terminology D4725.4.General Requirements4.1 Concentrated and prediluted coolants shall meet all ofthe physical,chemical and performance requirements of Speci-fication D7714,Tables 1,2,and 3.4.2 The coolant concentrate mixed with water or the predi-luted coolant,when maintained with maintenance doses ofSCAinaccordancewiththeenginemanufacturersrecommendations,and thos
