1、Designation: D5752 10 (Reapproved 2017)Standard Specification forSupplemental Coolant Additives (SCAs) for Use inPrecharging Coolants for Heavy-Duty Engines1,2This standard is issued under the fixed designation D5752; the number immediately following the designation indicates the year oforiginal ado
2、ption 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. Scope*1.1 This specification covers the general, physical,chemical, and performa
3、nce requirements for SupplementalCoolant Additives (SCAs) at a precharged level in the coolingsystems of heavy-duty engines.NOTE 1After precharging, SCAs are customarily used periodically toservice cooling systems at14 to13 the precharged dosage to compensatefor additives lost through dilution and d
4、epletion.1.2 The SCA products meeting this specification are in-tended for use with water, with recommended dilutions ofcoolant concentrates, with prediluted engine coolants, or toupgrade the performance of light-duty engine coolants to meetthe heav-duty requirements of Specification D6210. Engineco
5、olant products shall be of the low-silicate type and, ifethylene glycol based, shall meet Specification D4985. Propyl-ene glycol base low-silicate type coolant products may also beused, if these materials meet the chemical and performancerequirements of Specification D4985.1.3 The SCA concentrate, b
6、efore dissolution, may be ineither liquid, solid, or slurry form. The form is as agreed uponbetween the manufacturer and the user.1.4 The values stated in SI units are to be regarded asstandard. The inch-pound units in parentheses are approximateequivalents provided for information only.1.5 This sta
7、ndard 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.1.6 This international stan
8、dard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. R
9、eferenced Documents2.1 ASTM Standards:3D512 Test Methods for Chloride Ion In WaterD516 Test Method for Sulfate Ion in WaterD1119 Test Method for Percent Ash Content of EngineCoolantsD1121 Test Method for Reserve Alkalinity of Engine Cool-ants and AntirustsD1126 Test Method for Hardness in WaterD1193
10、 Specification for Reagent WaterD1287 Test Method for pH of Engine Coolants andAntirustsD1293 Test Methods 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
11、 System ChemicalSolutions on Organic Finishes for Automotive VehiclesD2570 Test Method for Simulated Service Corrosion Testingof Engine CoolantsD2809 Test Method for Cavitation Corrosion and Erosion-Corrosion Characteristics of Aluminum Pumps With En-gine CoolantsD3634 Test Method for Trace Chloride
12、 Ion in Engine Cool-antsD4327 Test Method for Anions in Water by Suppressed IonChromatographyD4340 Test Method for Corrosion of Cast Aluminum Alloysin Engine Coolants Under Heat-Rejecting ConditionsD4985 Specification for Low Silicate Ethylene Glycol BaseEngine Coolant for Heavy Duty Engines Requiri
13、ng aPre-Charge of Supplemental Coolant Additive (SCA)D5827 Test Method for Analysis of Engine Coolant forChloride and Other Anions by Ion Chromatography1This specification is under the jurisdiction ofASTM Committee D15 on EngineCoolants and Related Fluids and is the direct responsibility of Subcommi
14、tteeD15.07 on Specifications.Current edition approved April 1, 2017. Published April 2017. Originallyapproved in 1995. Last previous edition approved in 2010 as D5752-10. DOI:10.1520/D5752-10R17.2Supporting data have been filed at ASTM International Headquarters and maybe obtained by requesting Rese
15、arch Report: RR:D15-1024.3For 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.*A Summary of Changes section appear
16、s at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principle
17、s for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1D5828 Test Method for Compatibility of SupplementalCoolant Additives (SCAs) and Engine Coolant Concen-tratesD6129 Test Method for Silicon in
18、 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 En-gine Coolant for Heavy-Duty EnginesD6471
19、Specification for Recycled Prediluted Aqueous Gly-col Base Engine Coolant (50 Volume % Minimum) forAutomobile and Light-Duty ServiceD6472 Specification for Recycled Glycol Base Engine Cool-ant Concentrate for Automobile and Light-Duty ServiceE1177 Specification for Engine Coolant Grade GlycolG32 Tes
20、t Method for Cavitation Erosion Using VibratoryApparatus2.2 Other Document:Federal Method 2540B Total Dissolved Solids Dried at103105C43. General Requirements3.1 The SCA concentrate upon addition to water or water/glycol mixtures at the SCA manufacturers recommendedaddition level shall provide the s
21、ame performance as coolantsmeeting Specification D6210, except for freeze and boilprotection.3.2 Liquid SCA concentrates shall be storable in the manu-facturers original container at temperatures from 7 to +55 C(20 to 130 F) without chemical change. Any precipitation ofingredients evidenced by the d
22、ropout of solid material or liquidturbidity shall disappear upon agitation and warming of thesolution to a temperature exceeding 2 C (35 F).3.3 Solid, slurry, and paste forms of SCA concentrate shallbe so formulated and packaged as to prevent chemical orphysical change during storage before use. Thi
23、s requirementapplies to storage temperatures of 7 to +55 C (20 to 130 F),regardless of humidity.3.4 The SCA concentrates, when used according to themanufacturers recommendations, shall dissolve totally in thetest solutions required in this specification. A light haze ispermitted.3.5 If an engine, ve
24、hicle, or servicing organization recom-mends adding a precharge dosage of an SCA product to a fullyformulated coolant governed by Specification D6210, thatorganization assumes responsibility for determining the com-patibility and conducting suitable tests.ASTM has developed acompatibility test (Test
25、 Method D5828), which may be used.At the present time, it is recommended that precharge doses ofSCAs be used only in conjunction with coolant productsmeeting Specification D4985.4. Preparation of Test Solutions4.1 The preparation of test solutions for this specification islisted in Table 1. The glyc
26、ol used, either ethylene glycol orpropylene glycol, shall meet Specification E1177. Wheredistilled water is required, it shall conform to Type IV ofSpecification D1193.4.2 The quantity of any freshly prepared test solutionrequired in this specification shall be sufficient to perform thespecific test
27、s. However, no test solution shall be stored longerthan 96 h before initiation of a specific procedure.5. Detailed Requirements5.1 Test solutions prepared according to Table 1 shall meetthe performance requirements in Table 2, the general require-ments in Table 3, and the physical and chemical requi
28、rementsin Table 4.5.2 The SCAs shall additionally provide added protection inoperating engines against cavitation corrosion (also termedliner pitting) and against scaling of internal engine hot sur-faces. Hot surfaces are typically within the engine head, headspacer, or liquid-cooled exhaust manifol
29、d, oil coolers, aftercoolers, and exhaust gas recirculation (EGR) coolers. TheAmerican Society for Testing and Materials has test methodsunder development for both cavitation corrosion and hotsurfaces scaling. Until these procedures are adopted as ASTMstandards, the mandatory requirements of Annex A
30、1 shallapply.6. Keywords6.1 heavy-duty engine coolants; precharging heavy-dutyengines; SCA; supplemental coolant additives4Standard Method for the Examination of Water and Wastewater, AmericanPublic Health Association, et al, 1015 15th Street, N.W. Washington, DC 20005.TABLE 1 Composition of Test So
31、lutions for Table 2 PerformanceRequirementsATest Method SCA Concentrate Solvent MixtureD1384 one-half manufacturersrecommended prechargedlevelstandard corrosive waterBD1384 three times manufacturersrecommended prechargedlevel33 vol % glycol in standardcorrosive waterB, CD1881 manufacturers recommend
32、edprecharge level33 vol % glycol in standardcorrosive waterB, CD2570 manufacturers recommendedprecharge level44 vol % glycol in standardcorrosive waterB, CD2809 manufacturers recommendedprecharge level16.7 vol % glycol in standardcorrosive waterB, CD4340 manufacturers recommendedprecharge level165-m
33、g/L NaCl dissolved in a1-L solution of 25 vol %glycol in deionized waterC, DATest solution to be prepared according to Section 4.BSee Section 7 of Test Method D2570 for composition and method of preparationof standard corrosive water.CThe glycol used shall be ethylene glycol or propylene glycol and
34、each shall meetSpecification E1177.DWater conforming to Type IV of Specification D1193 is acceptable.D5752 10 (2017)2TABLE 2 Performance RequirementsAProperty Specific Values Test MethodCorrosion in glassware mass loss,mg/specimenD1384Copper 10 maxSolder 30 maxBrass 10 maxSteel 10 maxCast iron 10 ma
35、xAluminum 30 maxSimulated service test mass loss,mg/specimenD2570Copper 20 maxSolder 60 maxBrass 20 maxSteel 20 maxCast iron 20 maxAluminum 60 maxFoaming D1881Volume, mL 150 maxBreak time, s 5 maxWater pump cavitation erosion-corrosion rating8min D2809Corrosion of cast aluminum alloys atheat-rejecti
36、ng surfaces, mg/cm2/week1.0 max D4340Ultrasonic cavitation resistance see Annex A1 under developmentSCA-glycol base coolant compatibilityBD5828Hot surface scaling and depositsresistanceC. under developmentATest solutions for use in meeting Table 2 performance requirements are to beprepared according
37、 to Table 1.BSCA products may be required to meet a compatibility requirement. AlthoughTest Method D5828 has been developed, ASTM has not established allowablelimits. Until allowable limits have been approved, an agreement must be estab-lished between the SCA manufacturer and engine or vehicle user.
38、 This agreementshall include a definition of the test procedure, acceptable equipment, and theperformance rating criteria.CSee Appendix X2 for additional information.TABLE 3 General RequirementsProperty Specific Value Test MethodEffect on nonmetalsAno adverse effect under considerationStorage stabil
39、ity see 3.2 and 3.3 .AEvaluate using the SCA concentrate at the manufacturers recommendedprecharge level in a 50:50 volume mixture of distilled water and ethylene glycol ordistilled water and propylene glycol, each glycol conforming to SpecificationE1177.TABLE 4 Physical and Chemical PropertiesPrope
40、rtyASpecific Values Test MethodAsh content, dissolved in distilledwater, mass, %5 max D1119pH, in distilled water 7.5 to 11.0 D1287Reserve alkalinity, in distilled water reportBD1121Chloride ion, in distilled water, ppm 25 max D3634, D5827CSilicon, in distilled water, ppm 250 max D6129, D6130Effect
41、on vehicle finish no effectDD1882AProperty must be met with the specified solution, at an SCA precharge additionlevel recommended by the SCA manufacturer. (This is usually 3 % by volume.)BValue agreed upon between the supplier and the customer.CIn case of dispute, Test Method D3634 shall be the pref
42、erred test method.DCurrently, many heavy-duty engine manufacturers and vehicle manufacturersthat use these engines prepare test panels using the specific paint finishes usedon their actual products. Coolant product manufacturers and equipment buildersshould agree on the exact test procedures and acc
43、eptance criteria on an individualcase basis.D5752 10 (2017)3ANNEX(Mandatory Information)A1. CHEMICAL REQUIREMENTS FOR SCAsA1.1 Test methods to determine cavitation corrosion resis-tance are under development. Several chemical compositionsof SCAs have been extensively tested by producers and usersand
44、 found to minimize satisfactorily cylinder liner cavitation inactual test engines. Until such time as an ASTM procedure isadopted that effectively evaluates cylinder liner cavitationcorrosion, SCA formulations under this specification shallprovide the following when used at the SCA manufacturersreco
45、mmended precharge addition level:A1.1.1 Aminimum concentration of nitrite as (NO2)inthecooling system of 1200 ppm, orA1.1.2 A minimum combined concentration of nitrite as(NO2) plus molybdate as (MoO42) in the cooling system of780 ppm.At least 300 ppm each of NO2and MoO42must bepresent.A1.1.3 Concent
46、rations below the minimums detailed inA1.1.1 and A1.1.2 may not provide sufficient protection. (SeeX1.1.3.2 for further information.)A1.2 Composition limits in A1.1 are waived provided:A1.2.1 The SCAproducer and engine manufacturer agree tospecified composition limits for one or more chemical ingre-
47、dients other than those stated in A1.1.A1.2.2 Both parties agree to accept laboratory data orin-service performance experience demonstrating that the al-ternate composition exerts a positive influence on reducingcavitation corrosion in an operating engine.A1.2.3 In-service qualification tests may co
48、nsist of single-or multiple-cylinder engine tests.At the option of the engine orvehicle manufacturer, such testing may be conducted in “looseengines” or in engines fully integrated into an application suchas a vehicle, a power boat, or a stationary power source. Onesuch test has been developed.5A1.3
49、 Chemical composition requirements for cavitationcorrosion protection will be removed from this specificationand replaced with anASTM test method when a test method isdeveloped and adopted.A1.4 No specific chemical composition requirements forhot surface scaling and deposit resistance have been estab-lished at this time. A test procedure for this property is underdevelopment and will be incorporated into Table 2 when aprocedure is approved by ASTM.A1.5 Lack of compatibility between the coolant and SCAproducts chemistry results in chemical ingredient dro
