ASTMDL78843I075753000232332I-\~-Designation:D1788-81AMERICANSOCIETYFORTESTINGANDMATERIALS1916RaceSt.,Philadelphia,Pa.19103ReprintedfromtheAnnualBookofASTMStandards,CopyrightASTMIfnotlistedinthecurrentcombinedindex,willappearinthenextedition.StandardSpecificationforRIGIDACRYLONITRILE-BUTADIENE-STYRENE(ABS)PLASTICS?ThisstandardisissuedunderthefixeddesignationD1788;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(E)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversrigidthermo-plasticcompositionswhicharemadefrompolymersorblendsofpolymers,orboth,producedfromthemonomersacrylonitrile,butadiene,andstyrene(ABS)ortheircloselyrelatedchemicalderivativesandwhichcon-tainaminimumof13%acrylonitrile,5%butadiene,and15%styrene.ABSplasticsmayalsocontainamaximumof10%ofothermonomericorpolymericcomponents.Othernecessarycompoundingingredientsmayalsobepresent.Theseplasticcompositionsaresuitableforinjectionorcompressionmolding,calendering,andextrusion.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.NOTE1-Thisspecificationincludescommer-ciallyavailablecompoundsmeetingthecompositionrequirementsgivenhereinandonlythosecellcom-binationsthatareapplicablethereto.Materialsavail-ableatthetimeofpublication,listedbytheircellclassification,canbefoundintheappendix.Periodicupdatingofthislistingwillbeattherequestoftheseller.1.3Forpipeapplications,otherminimumcompositionrequirementsforacrylonitrile,bu-tadiene,andstyreneapply.Forexample,seeSpecificationD1527.1.4Thisspecificationprovidesforthedi-visionofABSpolymersintogroupsbasedonthreeproperties:Izodimpactstrength,deflec-tiontemperatureunderload,andtensilestressatyieldpoint.Thesethreepropertiesarethemostsignificantincharacterizingdif-ferencesbetweenABSeompounds.NOTE2-Thepropertiesincludedinthisspecifi-cationarethoserequiredtoidentifythetypesandgradesofmaterialsco...
