Designation:D4627−22StandardTestMethodforIronChipCorrosionforWater–MiscibleMetalworkingFluids1ThisstandardisissuedunderthefixeddesignationD4627;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversevaluationoftheferrouscor-rosioncontrolcharacteristicsofwater–misciblemetalworkingfluids.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.2.1Exception—Note1containsinch-poundunitssincethedrillsizesandfeedratesdonothavereadilyavailablemetricequivalents.1.2.2Exception—U.S.Standardsievesizesincludemeshvalues.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D4175TerminologyRelatingtoPetroleumProducts,LiquidFuels,andLubricants3.Terminology3.1Definitions:3.1.1Fordefinitionsoftermsusedinthistestmethod,refertoTerminologyD4175.3.1.2rust,n—corrosionproductconsistingprimarilyofhydratedironoxides.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1breakpoint,n—weakestconcentrationofthewater-misciblemetalworkingfluidtestedthatleavesnoruststainonthefilterpaper.4.SummaryofTestMethod4.1Castironchipsareplacedinapetridishcontainingafilterpaperanddilutedmetalworkingfluid.Thedishiscoveredandallowedtostandovernight.Theamountofruststainonthefilterpaperisanindicationofthecorrosion...
