Designation:D6120−97(Reapproved2012)StandardTestMethodforElectricalResistivityofAnodeandCathodeCarbonMaterialatRoomTemperature1ThisstandardisissuedunderthefixeddesignationD6120;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftheelec-tricalresistivityatroomtemperatureofsolidcylindricalspecimenscoredfromcommercialsizedcarbonanodesandcathodes.Thistestmethodalsoappliestosamplesfromcarbonblockspreparedinalaboratory.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationpriortouse.Forspecificwarninginformation,see.2.ReferencedDocuments2.1ASTMStandards:2C611TestMethodforElectricalResistivityofManufacturedCarbonandGraphiteArticlesatRoomTemperatureD5502TestMethodforApparentDensitybyPhysicalMea-surementsofManufacturedAnodeandCathodeCarbonUsedbytheAluminumIndustry3.Terminology3.1Definitions:3.1.1electricalresistivity,n—theelectricalresistanceof-feredbyamaterialtotheflowofcurrent,timesthecross-sectionalareaofcurrentflowandperunitlengthofcurrentpath,thereciprocalofconductivity.Itisalsoknownasresistivity,orspecificresistance.34.SummaryofTestMethod4.1Anelectricalcurrentispassedthroughacarboncylinderandthevoltagedroporelectricalresistanceismeasuredbetweentwopointsalongitslength.Theresistivityiscalcu-latedbasedonthevoltagedroporelectricalresistance,distancebetweenthetwopoints,andthecross-sectionalareaofthecylinder.4.2Thistestmethodareusedtodetermineelectricalresis-tivityforvariouscarbonmaterialstypicallyfoundinthealuminumindustry.Electricalresistivityo...
