【英文标准名称】:StandardTestMethodforWeightandCompositionofCoatingonTerneSheetbytheTriple-SpotTest
【原文标准名称】:用三点试验法测定长镀锌薄钢板镀层重量和成分的标准试验方法
【标准号】:ASTMA309-2001(2007)
【标准状态】:现行
【国别】:
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:A05.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:覆层;试验;钢
【英文主题词】:coatingcomposition;coatingweight;metalliccoatings;steelsheet-ternecoated;ternecoating
【摘要】:Acoatingofternemetalonironorsteelarticlesisintendedtoprovidedrawability,solderability,orcorrosionresistance,orcombinationthereof,whichcanrequiredifferentamountsofcoating.Specificationsforterne-coatedsheetsfrequentlyprovideforthesedifferentclasses(weights)ofcoatingsothatpurchaserscanselectthatmostsuitablefortheirneeds.Thistestmethodprovidesameansofdeterminingtheweightofcoatingforcomparisonwiththematerialspecificationrequirements.1.1Thistestmethodcoversthedeterminationoftheweightandcompositionofcoatingonternesheetbythetriple-spotmethod.Thefollowingthreeproceduresaredescribed:1.1.1ProcedureA-Strippingwithsulfuricacid.1.1.2ProcedureD-Strippingwithhydrochloricacidandantimonytrichloride.1.1.3ProcedureE-Strippingwithhydrobromicacid-brominesolution.ProcedureB(ElectrolyticStripping)andProcedureC(StrippingwithSilverNitrateSolution),formerlyinthistestmethod,werediscontinuedbecauselackofusage.ThedesignationforProcedureDandProcedureEareretainedtoavoidfutureconfusionwhenreferenceismadeonlytotheproceduredesignation.1.2Ifthepercentoftininthecoatingisrequired,strippingwithhydrobromicacid-bromineisthepreferredprocedure.Steelwithapredepositedelectrolyticnickelcoatingrequiresatwo-stagestrippingmethodtodeterminetotaltincontent.Ifboththetinandleadpercentagearerequired,strippingwithsulfuricacidisrecommended,butcautionisadvisedsincethesulfuricacidprocedurehasbeenfoundtoproducehightinresults(seeSection11).Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardsstatements,seeSection5,Note2,andSection17.
【中国标准分类号】:H40
【国际标准分类号】:77_140_50
【页数】:6P.;A4
【正文语种】: