ASTMDb47REV*A880759530O0393402(&Designation:D647-88aAMERICANSOCIETYFORTESTINQANDMATERIALS1916RaceSt.,Philadelphia.Pa.19103ReprintedfromtheAnnualBookofASTMStandards,CopyrightASTMIfnotlistedinthecurrentcombinedindex,willappearinlhenextedition.StandardPracticeforDesignofMoldsforTestSpecimensofPlasticMoldingMaterials'TbisstandardisissuedunderthefieddesignationD647;thenumberimmediatelyfollowingthedesignationindicatestheyearofonghaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(6)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedfirusebyagenciesoftheDeparimenrofDefinse.ConsulttheDoDIndexofSpec@cationsandaandardsfirthespecìíìcyearofissuewhichhasbeenadoptedbytheDeparimentofDefinse.1,Scope1.1Thispracticecoversthedesignofmoldsfortestspecimensofplasticmaterials.Designsareshownforcom-pressionmolds(Figs.1-4),atransfermold(Fig.5)foruseinproducingbar,disk,andtensiletestspecimensinthermoset-tingplasticmateriaisprimarily,andaninjectionmold(Fig.5)foruseinproducingbar,disk,andtensiletestspecimensineitherthermoplasticorthermosettingmaterials.Theplasticandmoldtemperatures,pressureandcycletimingusedforthemoldingmaterialshouldconformtotheappropriatemoldingpractice,ifavailable,ortothematerialspecification.Ifsuchinformationisnotavailable,therecom-mendationsofthematerialsuppliershouldbefollowed,1.2Designsshownhavebeenfoundsuitableforabroadrangeofplasticsbutmaynotbeoptimumforanygivenmateriai.Onlythespecimendimensionsareactuallystandardized?1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesaregivenforinforma-tiononly.1.4Thisstandardmayinvolvehazardousmaterials,oper-ations,andeqirbment.Thisstandarddoesnotpurporttoaddressallofthesafetyprobletnsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesaftyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.2,ReferencedDacuments2.1ASTMStandards...
