Designation:G2/G2M−06(Reapproved2011)´1StandardTestMethodforCorrosionTestingofProductsofZirconium,Hafnium,andTheirAlloysinWaterat680°F(360°C)orinSteamat750°F(400°C)1ThisstandardisissuedunderthefixeddesignationG2/G2M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—EditorialcorrectionsweremadeinSection14.3.4.1inOctober2013.1.Scope1.1Thistestmethodcovers(1)thedeterminationofmassgain,and(2)thesurfaceinspectionofproductsofzirconium,hafnium,andtheiralloyswhencorrosiontestedinwaterat680°F[360°C]orinsteamat750°F[400°C].1.2Thistestmethodistobeutilizedinitsentiretytotheextentspecifiedhereinasaproductacceptancetest.1.3Thistestmethodmaybeusedonwroughtproducts,castings,powdermetallurgyproducts,andweldmetals.1.4Unlessasingleunitisused,forexamplecorrosionmassgaininmg/dm2,thevaluesstatedineitherinch-poundorSIunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemarenotexactequivalents;thereforeeachsystemmustbeusedindependentlyoftheother.SIvaluescannotbemixedwithinch-poundvalues.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecificprecautionarystatements,seeSection9.2.ReferencedDocuments2.1ASTMStandards:2D888TestMethodsforDissolvedOxygeninWaterE29PracticeforUsingSignificantDigitsinTestDatatoDetermineConformancewithSpecifications3.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1controlcoupons,n—zirconiumalloyspecimensofknownperformanceusedtomonitorthevalidityofthetest.3.1.2etching,n—aprocessforremovalofsurfacemetalbyactionofacidsinwater.3.1.3GradeAwater,n—purifiedwaterhavingapHof5.0to8.0andanelectricalresistivityofnotlessthan1.0MΩ·...
