ASTM_D_5828_-_97_2011e1.pdf

Designation:D582897(Reapproved 2011)1Standard Test Method forCompatibility of Supplemental Coolant Additives(SCAs)andEngine Coolant Concentrates1This standard is issued under the fixed designation D5828;the number immediately 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()indicates an editorial change since the last revision or reapproval.1NOTEEditorial corrections to Section 7 were made in June 2011.INTRODUCTIONSupplemental coolant additives(SCAs)are used to impart special properties,usually resistance tocavitation corrosion,to engine coolants used in diesel engines with replaceable cylinder liner sleeves.Engines with this design require additives that are not normally found in commercial engine coolantconcentrates.1.Scope1.1 This test method covers determination of the compat-ibility of commercial SCA and commercial ethylene andpropylene glycol engine coolant concentrates.This test methodfocuses on the solubility of specific chemical species formed inthe engine coolant.The short duration of the test(24 h),amongother restrictions,makes the test method of limited use forsorting out a variety of chemical compatibility problems inwhich a component of the SCAmay react with a component ofthe coolant additive package.The test as currently written alsodoes not deal with the issue of hard water compatibility,inwhich a component of the coolant or SCA additive packagereacts with the hardness(Ca and Mg)to form a precipitate.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.3 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 practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2E691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodD1193 Specification for Reagent WaterD1796 Test Method for Water and Sediment in Fuel Oils bythe Centrifuge Method(Laboratory Procedure)D3585 Specification for ASTM Reference Fluid for CoolantTests3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 engine coolant concentratean undiluted ethylene orpropylene glycol containing additives and only a small amountof water,usually less than 5%.3.1.2 reference engine coolant concentratea standard ma-terial prepared according to the formulary given in Annex A2of this test method.This material should not be confused withreference coolant in accordance with Specification D3585.3.1.3 reference supplemental coolant additive(SCA)astandard SCA prepared according to the formulary given inAnnex A1 of this test method.3.1.4 supplemental coolant additivea liquid or solid ma-terial that is added to a coolant at a specified concentration.4.Summary of Test Method4.1 A mixture of engine coolant concentrate and deionizedwater containing approximately twice the recommended con-centration of SCA is heated to 88C(190F)for 24 h.Thesolution is centrifuged after returning to ambient temperature,and the amount of insoluble material is determined volumetri-cally and compared to the amount of insolubles obtained witha mixture of standard reference SCA and reference enginecoolant.1This test method is under the jurisdiction of ASTM Committee D15 on EngineCoolants and Related Fluids and is the direct responsibility of Subcommittee D15.11on Heavy Duty Coolants.Current edition approved Jan.1,2011.Published June 2011.Originally publishedas D5828 95.Last previous edition approved in 2002 as D5828 97(2002).DOI:10.1520/D5828-97R11.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Significance and Use5.1 This test was developed to mimic the formation ofinsolubles observed in some heavy-duty diesel cooling systemsduring the mid 1980s.It measures the compatibility of SCAand coolant concentrate solutions according to their tendencyto form insolubles in service.3Such insoluble materials mayaccumulate within a cooling system,restrict heat transferthrough radiator cores,and contribute to the damage ofcomponents such as water pumps.6.Apparatus6.1 Two-pan General Laboratory Balance,1 to 2-kg capac-ity.6.2 Centrifuge Tube,100-mL capacity in accordance withTest Method D1796.6.3 Centrifuge,capable of maintaining 500 rcf,with trun-nions and specimen holders suitable for the tube described in6.2.6.4 Constant Temperature Oil Bath,or equivalent,capableof maintaining the test temperature at 88C(190F),within61C(2