Designation:B76−90(Reapproved2018)StandardTestMethodforAcceleratedLifeofNickel-ChromiumandNickel-Chromium-IronAlloysforElectricalHeating1ThisstandardisissuedunderthefixeddesignationB76;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethod2coversthedeterminationoftheresistancetooxidationofnickel-chromiumandnickel-chromium-ironelectricalheatingalloysatelevatedtempera-turesunderintermittentheating.Proceduresforaconstant-temperaturecycleareprovided.Thistestmethodisusedforinternalcomparativepurposesonly.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.ItistheresponsibilityoftheuserofthisstandardtobecomefamiliarwithallhazardsincludingthoseidentifiedintheappropriateSafetyDataSheet(SDS)forthisproduct/materialasprovidedbythemanufacturer,toestablishappropriatesafety,health,andenvironmentalpractices,anddeterminetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.SignificanceandUse2.1Thistestmethodisusedbyproducersofelectricalheatingalloystomeasurethecyclicoxidationresistanceofthesealloys.2.2Becauseoftheeffectoftheenvironment,design,anduse,thelifevaluesobtainedfromthistestmethodmaynotcorrelatewiththatofanapplianceorindustrialheatingunit.3.TestPanel3.1SizeandLocation—ThedimensionsofthetestpanelshallbesimilartothoseshowninFig.1.Thetestpanelshallbelocate...
