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1、DAIMLERCHRYSLERCORPORATIONNo:MS-DB-41MaterialStandardDatePublished:2003-06-02CategoryCode:S-3Change:LEASLReq.:NoRESTRICTED:NoPLASTICS-THERMOPLASTIC-POLYAMIDE(NYLON)-ALLAUTOMOTIVEGRADES1.0GENERAL1.1PurposeoftheStandardThepurposeofthisstandardistospecifyt
2、herequirementsofautomotivegradesofpolyamide(nylon)developedfromvirgin,recycled,reconstituted,and/orregrindresinsources.Thisstandardusestheclassificationsystemandtablesof***ASTMD6779***,andoutlinestheinitialcharacterizationandcertificationrequirementsfor
3、thesematerials.1.2PurposeoftheMaterialThesematerialscanbeusedininjectionmolding,extrusion,blowmoldingandotherthermoformingprocesses.Particularmaterialsinthisstandardcanbeusedforinterior,exterior,and/orunder-the-hoodapplications.Thesematerialsaregenerall
4、yresistanttoheat,abrasion,andmostorganicchemicals.Partsmoldedfromthesematerialsarewellsuitedforfunctionalanddecorativeapplications.1.3CoverageofthisStandardThisstandardcoversthephysicalandmechanicalrequirements,testprocedures,andqualitycontrolforpolyami
5、deresins.Thestandardappliestoallgradesofpolyamidecommonlyusedintheautomotiveindustry,ascomprisedin***ASTMD6779***.ThisstandardsupersedesthefollowingDaimlerChryslerMaterialStandards;DB45,DB48,DB416,DB418,DB426,DB427,DB430,DB431,DB432,DB433,DB437,DB441,DB
6、442,DB444,DB446,DB447,DB451,DB453,DB455,DB457,DB465,DB466,DB467,DB470,DB476andMS-DB478.Thisstandardappliestonatural,black,non-matchedcolorand100%color-matchmaterials.Thisdocumentallowsfortheuseofrecycled,reconstituted,andregroundmaterialsprovidedthatthe
7、requirementsasstatedinthisdocumentaremetandthematerialisidentifiedassuchonthepartdrawingorwiththeappropriatesuffix.2.0MATERIALCHARACTERISTICSThematerialshallmaintainallthecharacteristicsthatarestatedinthestandardthroughallphasesofprocessing.Manufacturin
8、gissuessuchasnicks,tears,cracks,flowmarks,blisters,flash,roughness,porosity,voids,surfacefinishandtextureareprimarilyafunctionoftheprocessandnotthematerial.Otherissuessuchascolor,gloss,warpageandshrinkagecouldbearesultoftheproces
