Designation:D6394−21aStandardClassificationSystemforandBasisforSpecificationforSulfonePlastics(SP)1ThisstandardisissuedunderthefixeddesignationD6394;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisclassificationsystemcoverssulfoneplasticssuit-ableforinjectionmoldingandextrusion.Sulfonepolymers,beingthermoplastic,arereprocessableandrecyclable.Thisclassificationsystemallowsfortheuseofreprocessedorrecycledsulfonepolymermaterials.1.2Thepropertiesincludedinthisstandardarethoserequiredtoidentifythecompositionscovered.Otherrequire-mentsnecessarytoidentifyparticularcharacteristicsimportanttospecializedapplicationsaretobespecifiedbyusingthesuffixesinSection5.SeeGuideD5740.1.3Thisclassificationsystemandsubsequentlinecallout(specification)areintendedtoprovideameansofcallingoutsulfoneplasticsusedinthefabricationofenditemsorparts.Itisnotintendedfortheselectionofmaterials.Materialselectioncanbemadebythosehavingexpertiseintheplasticsfieldonlyaftercarefulconsiderationofthedesignandtheperformancerequiredofthepart,theenvironmenttowhichitwillbeexposed,thefabricationprocesstobeemployed,thecostsinvolved,andtheinherentpropertiesofthematerialotherthanthosecoveredbythisstandard.1.4Thefollowingsafetyhazardscaveatpertainsonlytothetestmethodportion,Section11,ofthisclassificationsystem:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafety,health,andenvironmentalpracticesanddeterminetheappli-cabilityofregulatorylimitationspriortouse.NOTE1—ReferenceGuideD7209forinformationanddefinitionsrelatedtorecycledplastics.NOTE2—ISO24025issimilarinsubjectmatterbutnotequivalenttothisstandard.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprincipl...
