Designation:D8254−19StandardTestMethodforFlashandFirePointsofAsphaltbyClevelandOpenCupTester1ThisstandardisissuedunderthefixeddesignationD8254;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThisflashpointandfirepointtestmethodisadynamicmethodanddependsondefiniteratesoftemperatureincreasestocontroltheprecisionofthetestmethod.Itsprimaryuseisforviscousmaterialshavingflashpointof79°C(174°F)andabove.Itisalsousedtodeterminefirepoint,whichisatemperatureabovetheflashpoint,atwhichthetestspecimenwillsupportcombustionforaminimumof5s.DonotconfusethistestmethodwithTestMethodD4206,whichisasustainedburningtest,opencuptype,ataspecifictemperatureof49°C(120°F).Flashpointvaluesareafunctionoftheapparatusdesign,theconditionoftheapparatusused,andtheoperationalprocedurecarriedout.Flashpointcanthereforeonlybedefinedintermsofastandardtestmethod,andnogeneralvalidcorrelationcanbeguaranteedbetweenresultsobtainedbydifferenttestmethods,orwithtestapparatusdifferentfromthatspecified.1.Scope1.1ThistestmethoddescribesthedeterminationoftheflashpointandfirepointofasphaltbyamanualClevelandopencupapparatusoranautomatedClevelandopencupapparatus.NOTE1—ApparatusisthesameasdescribedinTestMethodD92withtheadditionofthematerialsfortheskinpreventiontechnique.1.2Thistestmethodisapplicabletoasphaltsthatcanformaskin,andthosethatdonotformaskinduringheattreatment.1.3Thistestmethodisapplicabletoproductswithflashpointsabove79°C(174°F)andbelow400°C(752°F),exceptfueloils.1.4Theprecisionhasbeendeterminedoverthetemperaturerangeof300°Cto370°C(572°Fto698°F).1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconce...
