1-LW--.1..,..._.I.C...-.IND-STDASTMD234L-BlNOTICEL5b9777777800027847INOlZCEOí-IIADOPTIONII..ADOPTZONNOTICE'I2October1989forArJ'rHD2341-81June26,1981AS'TPID2341-81wasadoptedon2October1989andisapprovedfarusebytheDepartmentofüefense(Doll).existingregulations.StockPoint,NavalPublicationsandFormsCenter,5801TaborAvenue,VhlladelPhla,PAASI'PIhas.furnishedtheclearancerequiredbyCopiesofthisdocumentarestockedbyDOU'Jingle19120,forissuetoDoDactivitiesonly.Allother......requestoksmustobtaindocumentsfrom:AS'rH19'16.RaceStreetPhiladelphia,PA19103TitleOFDocument:StandardSpecificationforRigidUrethaneFoamDateofSpecificIssueAdopted:June26,1981ReleasingMon-GovernmentStandardsBody:ASTNCustodians:Navy-YUAirForce-99Amy-MEHeviewActivities:Army-CtNavy-SHAirForce-84UserActivities:Navy-CG,NCPlilitaryCoordinatingActivity:Navy-YD(Project5640-0474)IFSC5640DISTRlBU'rIONSTA'I'L'HENTA.un1imited.Approvedforpublicreleasé;distributionis.THISDOCUMENTCONTAINSPAGES.NOTICE:Thisstandardhaseitherbeensupersededandreplacedbyanewversionordiscontinued.ContactASTMInternational(www.astm.org)forthelatestinformation.7N-u-17ASTMD234181E075751000253857rn~~~~~=~[[rkDesignation:D2341-81AMERICANSOCIETYFORTESTINGANDMATERIALS1916RaceSt.,Philadelphia,Pa.19103ReprintedfromtheAnnualBookofASTMStandards,CopyrightASTMIfnotlistedinthecurrentcombinedindex,willappearinthenextedition.StandardSpecificationforRIGIDURETHANEFOAM'ThisstandardisissuedunderthefixeddesignationD2341;thenumberimmediatelyfollowingthedesignationindicatestheyearofonginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(E)indicatesaneditonalchangesincethelastrevisionorreapproval.1.scopeî.1Thisspecificationcoversaclassofrigidcellularmaterialsknownasurethanefoamorrigidcellularmaterialsmadefromurethanerawmaterialswhereothertypesofrepeatedstructuralunitsarepresentsuchaspolycarbo-diimideorpolyisocyanurate.Urethanefoammaybegenerallydefinedasanexpandedcel-lularproductproducedbyacatalyzedr...
