Designation:D828–97(Reapproved2002)AnAmericanNationalStandardStandardTestMethodforTensilePropertiesofPaperandPaperboardUsingConstant-Rate-of-ElongationApparatus1ThisstandardisissuedunderthefixeddesignationD828;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thistestmethodcoversproceduresfordeterminingtensilepropertiesofpaperandpaperboard.1.2Theproceduresgiveninthistestmethodareforusewithconstant-rate-of-elongationtensiletestingequipmentandassuch,maybeusedwithinstrumentsdesignedforeitherverticalorhorizontaloperation,andwhethermanuallyoperatedorcomputercontrolled.1.3Theseproceduresareapplicableforalltypesofpaper,paperboard,paperproducts,andrelatedmaterialswithinthemeasurementlimitationsoftheequipmentused.Theyarenotforusewithcombinedcorrugatedboard.1.4Propertiesthatmaybedeterminedusingthistestmethodincludetensilestrength,stretch,tensileenergyabsorption,tensilestiffness,breakinglength,andtensileindex.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundunitsgiveninparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:D585PracticeforSamplingandAcceptingaSingleLotofPaper,Paperboard,Fiberboard,andRelatedProducts2D685PracticeforConditioningPaperandPaperProductsforTesting2D987MethodofTestforStretchofPaperandPaperProductsUnderTension3D1968TerminologyRelatingtoPaperandPaperProducts2E122PracticeforCalculatingSampleSizetoEstimate,WithaSpecifiedTolerableError,theAverageforCharac-teristicofaLotorProcess43.Terminology3.1Definit...