1、Designation: D 5752 05Standard Specification forSupplemental Coolant Additives (SCAs) for Use inPrecharging Coolants for Heavy-Duty Engines1, 2This standard is issued under the fixed designation D 5752; the number immediately following the designation indicates the year oforiginal adoption or, in th
2、e 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 specification covers the general, physical, chemi-cal, and performance requireme
3、nts for Supplemental CoolantAdditives (SCAs) at a precharged level in the cooling systemsof 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 depletion.1.2
4、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 D 6210. Enginecoolant produc
5、ts shall be of the low-silicate type and, ifethylene glycol based, shall meet Specification D 4985. Pro-pylene glycol base low-silicate type coolant products may alsobe used, if these materials meet the chemical and performancerequirements of Specification D 4985.1.3 The SCA concentrate, before diss
6、olution, 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 standard does
7、 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.2. Referenced Documents2.1 ASTM Stand
8、ards:3D 512 Test Method for Chloride Ion in WaterD 516 Test Method for Sulfate Ion in WaterD 1119 Test Method for Ash Content of Engine Coolantsand AntirustsD 1121 Test Method for Reserve Alkalinity of EngineCoolants and AntirustsD 1126 Test Method for Hardness of WaterD 1193 Specification for Reage
9、nt WaterD 1287 Test Method for pH of Engine Coolants and Anti-rustsD 1293 Test Methods for pH of WaterD 1384 Test Method for Corrosion Test for Engine Coolantsin GlasswareD 1881 Test Method for Foaming Tendencies of EngineCoolants in GlasswareD 1882 Test Method for Effect of Cooling System ChemicalS
10、olutions on Organic Finishes for Automotive VehiclesD 1888 Test Methods for Particulate and Dissolved Matterin WaterD 2570 Test Method for Simulated Service Corrosion Test-ing of Engine CoolantsD 2809 Test Method for Cavitation Corrosion and Erosion-Corrosion Characteristics of Aluminum Pumps with E
11、n-gine CoolantsD 3634 Test Method for Trace Chloride Ion in EngineCoolantsD 4327 Test Method for Anions in Water by ChemicallySuppressed Ion ChromatographyD 4340 Test Method for Corrosion of Cast AluminumAlloys in Engine Coolants Under Heat-Rejecting Condi-tionsD 4985 Specification for Low Silicate
12、Ethylene GlycolBase Engine Coolant for Heavy Duty Engines Requiringan Initial Charge of Supplemental CoolantAdditive (SCA)D 5827 Test Method for Analysis of Engine Coolant forChloride and Other Anions by Ion ChromatographyD 5828 Test Method for Compatibility of SupplementalCoolant Additives (SCAs) a
13、nd Engine Coolant Concen-tratesD 6129 Test Method for Silicon in Engine Coolant Concen-trates by Atomic Absorption Spectroscopy1This specification is under the jurisdiction ofASTM Committee D15 on EngineCoolants and is the direct responsibility of Subcommittee D15.07 on Specifications.Current editio
14、n approved Oct. 1, 2005. Published November 2005. Originallyapproved in 1995. Last previous edition approved in 2004 as D 5752 - 04a.2A research report is available from ASTM headquarters. Request: D15-1024.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer
15、 Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.D 6130 Test Method for the Determinatio
16、n of Silicon andOther Elements in Engine Coolant by Inductively CoupledPlasma-Atomic Emission SpectroscopyD 6210 Specification for Fully-Formulated Glycol BaseEngine Coolant for Heavy-Duty EnginesD 6471 Specification for Recycled PredilutedAqueous Gly-col Base Engine Coolant (50 % Minimum) forAutomo
17、bileand Light-Duty ServiceD 6472 Specification for Recycled Glycol Base EngineCoolant Concentrate for Automobile and Light-Duty Ser-viceE 1177 Specification for Engine Coolant Grade GlycolG32 Test Method for Cavitation Erosion Using VibratoryApparatus3. General Requirements3.1 The SCA concentrate up
18、on addition to water or water/glycol mixtures at the SCA manufacturers recommendedaddition level shall provide the same performance as coolantsmeeting Specification D 6210, except for freeze and boilprotection3.2 Liquid SCA concentrates shall be storable in the manu-facturers original container at t
19、emperatures from 7 to + 55C(20 to 130F) without chemical change. Any precipitation ofingredients evidenced by the dropout of solid material or liquidturbidity shall disappear upon agitation and warming of thesolution to a temperature exceeding 2C (35F).3.3 Solid, slurry, and paste forms of SCA conce
20、ntrate shallbe so formulated and packaged as to prevent chemical orphysical change during storage before use. This requirementapplies to storage temperatures of 7 to + 55C (20 to 130F),regardless of humidity.3.4 The SCA concentrates, when used according to themanufacturers recommendations, shall dis
21、solve totally in thetest solutions required in this specification. A light haze ispermitted.3.5 If an engine, vehicle, or servicing organization recom-mends adding a precharge dosage of an SCA product to a fullyformulated coolant governed by Specification D 6210, thatorganization assumes responsibil
22、ity for determining the com-patibility and conducting suitable tests.ASTM has developed acompatibility test (Test Method D 5828), which may be used.At the present time, it is recommended that precharge doses ofSCAs be used only in conjunction with coolant productsmeeting Specification D 4985.4. Prep
23、aration of Test Solutions4.1 The preparation of test solutions for this specification islisted in Table 1. The glycol used, either ethylene glycol orpropylene glycol, shall meet Specification E 1177. Wheredistilled water is required, it shall conform to Type IV ofSpecification D 1193.4.2 The quantit
24、y of any freshly prepared test solutionrequired in this specification shall be sufficient to perform thespecific tests. 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 m
25、eetthe performance requirements in Table 2, the general require-ments in Table 3, and the physical and chemical requirementsin Table 4.5.2 The SCAs shall additionally provide added protection inoperating engines against cavitation corrosion (also termedTABLE 1 Composition of Test Solutions for Table
26、 2 PerformanceRequirementsATest Method SCA Concentrate Solvent MixtureD 1384 one-half manufacturersrecommended prechargedlevelstandard corrosive waterBD 1384 three times manufacturersrecommended prechargedlevel33 vol % glycol in standardcorrosive waterB,CD 1881 manufacturers recommendedprecharge lev
27、el33 vol % glycol in standardcorrosive waterB,CD 2570 manufacturers recommendedprecharge level44 vol % glycol in standardcorrosive waterB,CD 2809 manufacturers recommendedprecharge level16.7 vol % glycol in standardcorrosive waterB,CD 4340 manufacturers recommendedprecharge level165-mg/L NaCl dissol
28、ved 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 D 2570 for composition and method ofpreparation of standard corrosive water.CThe glycol used shall be ethylene glycol or propylene glycol and each shallmeet
29、Specification E 1177.DWater conforming to Type IV of Specification D 1193 is acceptable.TABLE 2 Performance RequirementsAProperty Specific Values Test MethodCorrosion in glassware mass loss,mg/specimenD 1384Copper 10 maxSolder 30 maxBrass 10 maxSteel 10 maxCast iron 10 maxAluminum 30 maxSimulated se
30、rvice test mass loss,mg/specimenD 2570Copper 20 maxSolder 60 maxBrass 20 maxSteel 20 maxCast iron 20 maxAluminum 60 maxFoaming D 1881Volume, mL 150 maxBreak time, s 5 maxWater pump cavitation erosion-corrosion rating8min D 2809Corrosion of cast aluminum alloys atheat-rejecting surfaces, mg/cm2/week1
31、.0 max D 4340Ultrasonic cavitation resistance see Annex A1 under developmentSCA-glycol base coolant compatibilityBD 5828Hot surface scaling and depositsresistanceC. under developmentATest solutions for use in meeting Table 2 performance requirements are to beprepared according to Table 1.BSCA produc
32、ts may be required to meet a compatibility requirement. AlthoughTest Method D 5828 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. This agreementshall i
33、nclude a definition of the test procedure, acceptable equipment, and theperformance rating criteria.CSee Appendix X2 for additional information.D5752052liner pitting) and against scaling of internal engine hot sur-faces. Hot surfaces are typically within the engine head, headspacer, or liquid-cooled
34、 exhaust manifold, 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 require
35、ments of Annex A1 shallapply.6. Keywords6.1 heavy-duty engine coolants; precharging heavy-dutyengines; SCA; supplemental coolant additivesTABLE 3 General RequirementsProperty Specific Value Test MethodEffect on nonmetalsAno adverse effect under considerationStorage stability see 3.2 and 3.3 .AEvalua
36、te 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 SpecificationE 1177.TABLE 4 Physical and Chemical PropertiesPropertyASpecific Values Test Me
37、thodAsh content, dissolved in distilledwater, mass, %5 max D 1119pH, in distilled water 7.5 to 11.0 D 1287Reserve alkalinity, in distilled water reportBD 1121Chloride ion, in distilled water, ppm 25 max D 3634, D 5827CSilicon, in distilled water, ppm 250 max D 6129, D 6130Effect on vehicle finish no
38、 effectDD 1882AProperty 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, D 3634 shall be the preferred test method.DCurrently,
39、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 acceptance criteria on an individ
40、ualcase basis.D5752053ANNEX(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 found to minimize satisfactorily cyli
41、nder 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 manufacturersrecommended precharge addition level:A1.1.
42、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 Concentrations below the minimums detailed in
43、A1.1.1 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-dients other than those stated in A1.1
44、.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 consist of single-or multiple-cylinder e
45、ngine 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.4A1.3 Chemical composition requirements for
46、 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 procedur
47、e 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 dropoutfrom solution, with potential adverse effects in the vehicle orengine cooli
48、ng system. A test procedure for compatibility hasbeen developed, Test Method D 5828, and may be used toestablish compatibility between the coolant and the SCAproduct.APPENDIXES(Nonmandatory Information)X1. COOLANT MAINTENANCE FOR HEAVY-DUTY ENGINESX1.1 Engine CoolantCooling system fill for a heavy-d
49、uty engine consists of water, coolant concentrate (antifreeze),or prediulted engine coolant, and SCA.X1.1.1 Water:X1.1.1.1 Water quality affects the efficiency of coolantadditives. When untreated, all water is corrosive. Water havinga high mineral content or corrosive materials is unfit forcooling system use.X1.1.1.2 When preparing coolant mixtures, the watershould be of such quality that it does not contain excessivesolids, hardness salts, sulfates, or chlorides. In the absence ofspecific recommendations from the engine or vehicle manu-facturer, see Table
