Product Code:SAE AS138
Title:Hose Assembly, Metal - Medium Pressure, Flareless, Welded, Straight to 90掳
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:No scope available.【英文标准名称】:StandardSpecificationforPolypropyleneInjectionandExtrusionMaterialsUsingISOProtocolandMethodology
【原文标准名称】:采用ISO协议和方法的聚丙烯注入和挤压材料的标准规范
【标准号】:ASTMD5857-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D20.15
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:injectionandextrusionmaterials;polypropylene;recycled;ISOprotocols;Molding/extrusioncompounds/materials--specifications;Propylene(PP)plastics--specifications
【摘要】:1.1Thisspecificationcoverspolypropylenematerialssuitableforinjectionmoldingandextrusion.Polymersconsistofpolypropylenehomopolymers,polypropylenecopolymers,andpolypropylene-elastomercompoundsproducedwithorwithouttheadditionofimpactmodifiers(ethylene-propylenerubber,polyisobutylenerubber,andbutylrubber,andsoforth),colorants,stabilizers,lubricants,fillers,orreinforcements.1.2Thisspecificationallowsfortheuseofthosepolypropylenematerialsthatcanberecycled,reconstituted,andreground,providedthatthefollowingconditionsaremet:1.2.1TherequirementsasstatedinthisspecificationandotherISOguidelinespertainingtothesetypesofmaterialsaremet,and1.2.2Thematerialhasnotbeenmodifiedinanywaytoalteritsconformancetofoodcontactregulationsorsimilarrequirements.1.3Theproportionsofrecycled,reconstituted,andregrindmaterialused,aswellasthenatureandtheamountofanycontaminant,cannotbepracticallycoveredinthisspecification.Itistheresponsibilityofthesupplierandbuyerofrecycled,reconstituted,andregrindmaterialstoensurecompliance.1.4Thepropertiesincludedinthisclassificationsystemarethoserequiredtoidentifythecompositionscovered.Theremaybeotherrequirementsnecessarytoidentifyparticularcharacteristicsimportanttospecializedapplications.ThesemaybespecifiedbyusingthesuffixesasgiveninSection5andthoseinClassificationSystemD4000.1.5Thisclassificationsystemandspecificationareintendedtoprovideameansofcallingoutpolypropylenematerialsusedinthefabricationofenditemsorparts.Itisnotintendedfortheselectionofmaterials.Materialselectionshouldbemadebythosehavingexpertiseintheplasticfieldaftercarefulconsiderationofthedesignandtheperformancerequiredofthepart,theenvironmenttowhichitwillbeexposed,thefabricationprocesstobeemployed,thecostsinvolved,andtheinherentpropertiesofthematerialotherthanthosecoveredbythisspecification.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.7Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportion,Section13,ofthisspecification:Thisspecificationdoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisspecificationtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThisspecificationissimilartobothISO1873-1andISO1873-2,buttodifferentdegrees.ThisspecificationresemblesISO1873-1intitleonly.Thecontentissignificantlydifferent.ThisspecificationandISO1873-2differinapproachordetail;dataobtainedusingeitheraretechnicallyequivalent.
【中国标准分类号】:G33
【国际标准分类号】:83_040_20
【页数】:22P.;A4
【正文语种】:英语