Designation:C565−15AnAmericanNationalStandardStandardTestMethodsforTensionTestingofCarbonandGraphiteMechanicalMaterials1ThisstandardisissuedunderthefixeddesignationC565;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thesetestmethodscovertheapparatus,specimen,andproceduresforthetensiontestingofcarbonandgraphitemechanicalmaterialswithagrainsizesmallerthan0.79mm.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.2.1Exception—Allofthefiguresaredimensionedininchesinaccordancewiththeoriginalstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C749TestMethodforTensileStress-StrainofCarbonandGraphiteE4PracticesforForceVerificationofTestingMachinesE6TerminologyRelatingtoMethodsofMechanicalTesting3.Terminology3.1Definitions:3.1.1ThedefinitionsoftermsrelatingtotensiontestinginTerminologyE6shallbeconsideredasapplyingtothetermsusedinthesetestmethods.3.1.2tensilestrength,n—propertyofsolidmaterialthatindicatesitsabilitytowithstandauniaxialtensileload,convertedtounitstressbasedontheoriginalcross-sectionareaofthetensiletestspecimen.3.1.3ultimatetensilestrength,n—themaximumtensilestressappliedinstretchingaspecimentorupture.4.SignificanceandUse4.1Thesetestmethodsmaybeusedforqualitycontroltestingofestablishedgradesofcarbonandgraphitematerials,inthedevelopmentofnewgrades,andforotherpurposeswhererelativestrengthlevelsaretheprimaryquantitiesofinterest.Thistestmethodmaybeapplicableonlyiftheratioofspecimendiametertograinsize,orflawsize,isgreaterthan5.4.2Thesetestmethodsdonotsubsti...
