Designation:E2824−11StandardTestMethodforDeterminationofBerylliuminCopper-BerylliumAlloysbyPhosphateGravimetricMethod1ThisstandardisissuedunderthefixeddesignationE2824;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribesthedeterminationofberyl-liumincopper-berylliumalloysinpercentagesfrom0.1%to3.0%bythephosphategravimetricmethod.1.2Units—ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninSection9.2.ReferencedDocuments2.1ASTMStandards:2E29PracticeforUsingSignificantDigitsinTestDatatoDetermineConformancewithSpecificationsE50PracticesforApparatus,Reagents,andSafetyConsid-erationsforChemicalAnalysisofMetals,Ores,andRelatedMaterialsE135TerminologyRelatingtoAnalyticalChemistryforMetals,Ores,andRelatedMaterialsE173PracticeforConductingInterlaboratoryStudiesofMethodsforChemicalAnalysisofMetals(Withdrawn1998)3E255PracticeforSamplingCopperandCopperAlloysfortheDeterminationofChemicalCompositionE1601PracticeforConductinganInterlaboratoryStudytoEvaluatethePerformanceofanAnalyticalMethod3.Terminology3.1Fordefinitionsoftermsusedinthismethod,refertoTerminologyE135.4.SummaryofTestMethod4.1Berylliumisprecipitatedasthephosphate,whichisfiltered,ignited,andweighedasberylliumpyrophosphate.Interferingelements,ifpresent,maybecomplexedwith(ethylenedinitrilo)tetraacetatesolution.5.SignificanceandUse5.1Thistestmethodforthechemicalanalysisofmetalsandalloysisprimarilyintendedtotestsuchmaterialsforcompli-ancewithcompositionalspecificatio...
