Designation:D4225–03StandardSpecificationforStyrene-ButadieneSheeting1ThisstandardisissuedunderthefixeddesignationD4225;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1Thisspecificationcoversstyrene-butadienesheetinginthicknessesof0.25mm[0.01in.]andgreater.Sheetingconformingtothisspecificationisintendedforuseininstru-menthousingsandapplicationsrequiringresistancetoimpact.Methodsoffabricationmayrequirethatthesheetbedrawnorbent.1.2Thisspecificationcoversnaturalandcoloredsheeting.1.3Thisspecificationcoversqualityrequirementsthatin-cludedegreeoforientation,amountofwarpageortwist,dimensions,tolerances,andworkmanship.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theunitsgiveninbracketsareforinformationonly.1.5ThisspecificationallowsfortheuseofrecycledplasticsasdefinedinGuideD5033.1.6Thefollowingprecautionarystatementpertainstothetestmethodportiononly,Section12,ofthisspecification:Thisstandarddoesnotpurporttoaddressthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimita-tionspriortouse.NOTE1—ThereisnoknownISOequivalenttothisstandard.2.ReferencedDocuments2.1ASTMStandards:D256TestMethodsforDeterminingtheIzodPendulumImpactResistanceofPlastics2D618PracticeforConditioningPlasticsforTesting2D638TestMethodforTensilePropertiesofPlastics2D883TerminologyRelatingtoPlastics2D1238TestMethodforFlowRatesofThermoplasticsbyExtrusionPlastometer2D1525TestMethodforVicatSofteningTemperatureofPlastics2D1898PracticeforSamplingofPlastics3D2732TestMethodforUnrestrainedLinearThermalShrinkageofPlasticFilmandSheeting4D3892PracticeforPackaging/PackingofPlastics4D4549Specificationfo...
