Designation:B860−16StandardSpecificationforZincMasterAlloysforUseinHotDipGalvanizing1ThisstandardisissuedunderthefixeddesignationB860;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoverszincmasteralloyswhichareusedinhotdipgalvanizingforthepurposeofadjustingtheconcentrationofcertainalloyingelementsinthemoltenzincbath.Table1coversthechemicalcompositionofthesematerialswhichincludesixmasteralloysofzinc-aluminum(brightener)andonemasteralloyofzinc-antimony.ASTMCommonUNSTypeA-190/10Zn/AlHighPurityZ30750TypeA-290/10Zn/AlLowPurityZ31710TypeA-395/5Zn/AlHighPurityZ30503TypeA-495/5Zn/AlLowPurityZ31510TypeA-596/4Zn/AlHighPurityZ31520TypeA-696/4Zn/AlLowPurityZ30504TypeS-190/10Zn/SbZ55710NOTE1—ThemasteralloysinSpecificationB860areintendedtobeusedprimarilyinhot-dipgalvanizingtoadjusttheconcentrationofcertainelementsinamoltenzincbath,anddifferfromthezinc-aluminumalloysinSpecificationB997whichareintendedtobeusedprimarilyinmoltenzinc-aluminum.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.ItistheresponsibilityoftheuserofthisstandardtobecomefamiliarwithallhazardsincludingthoseidentifiedintheappropriateSafetyDataSheet(SDS)forthisproduct/materialasprovidedbythemanufacturer,toestablishappropriatesafetyandhealthpractices,anddeterminetheapplicabilityofregulatorylimi-tationspriortouse.2.ReferencedDocuments2.1Thefollowingdocumentsoftheissueineffectondateoforderacceptanceformapartofthisspecificationtotheextentreferencedherein:2.2ASTMStandards:2B897SpecificationforConfigurationofZincandZincAlloyJumbo,Block,HalfBlock,andSlabIngotB899Te...
