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【英文标准名称】:StandardSpecificationforCorrosion-ResistantHigh-SiliconIronCastings
【原文标准名称】:耐腐蚀的高硅生铁铸件的标准规范
【标准号】:ASTMA518/A518M-1999(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【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】:A04.01
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:Castiron--specifications;Corrosiveserviceapplications--castings;Fusion-hydrochloricaciddehydrationmethod;High-siliconcastiron;Interlaboratorytesting;Refereemethods;Silicon--corrosion-resistant
【摘要】:1.1Thisspecificationcovershigh-siliconcastironcastingsintendedforcorrosion-resistantservice.1.2ThisspecificationcoversthreegradesasshowninTable1.Selectionofgradedependsonthecorrosiveservicetobeexperiencedbythecasting.Allthreegradesaresuitedforapplicationinseverecorrosiveenvironments.However,Grade2isparticularlysuitedforapplicationinstrongchlorideenvironments,andGrade3isrecommendedforimpressedcurrentanodes.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.4Thefollowingsafetyhazardscaveatpertainsonlytothetestmethodportion,Section9,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.TABLE1ChemicalCompositionElementComposition,Weight%Grade1Grade2Grade3Carbon
0.65x2013;1.10
0.75x2013;1.15
0.70x2013;1.10
Manganese
1.50,max
1.50,max
1.50,max
Silicon
14.20x2013;14.75
14.20x2013;14.75
14.20x2013;14.75
Chromium
0.50,max
3.25x2013;5.00
3.25x2013;5.00
Molybdenum
0.50,max
0.40x2013;0.60
0.20,max
Copper
0.50,max
0.50,max
0.50,max