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[English] StandardSpecificationfor PerformanceofEngineOils

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tian98 发表于 2016-8-3 08:31:39 | 查看全部 阅读模式

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IntheASTMsystem,aspecificAPIdesignationisassignedtoeachcategory.Thesystemisopen-ended,thatis,newdesignationsareassignedforusewithnewcategoriesaseachnewsetofoilperformancecharacteristicsaredefined.Oilcategoriesmaybereferencedbyenginebuildersinmakinglubricantrecommendations,andusedbylubricantsuppliersandcustomersinidentifyingproductsforspecificapplications.Whereapplicable,candidateoilprogramsareconductedinaccordancewiththeAmericanChemistryCouncil(ACC)PetroleumAdditivesProductApprovalCodeofPractice

ThisstandardisissuedunderthefixeddesignationD4485;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(′)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense
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发表于 2016-8-3 09:29

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