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【英文标准名称】:StandardSpecificationforSteelStrand,UncoatedSeven-WireforPrestressedConcrete
【原文标准名称】:预应力混凝土的未涂覆七股钢丝绞绳标准规范
【标准号】:ASTMA416/A416M-2010
【标准状态】:现行
【国别】:
【发布日期】:2010
【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】:A01.05
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:预应力混凝土;7股钢绞线;钢丝;混凝土钢筋-规范;钢丝(混凝土);钢绞线-规范
【英文主题词】:prestressedconcrete;seven-wirestrand(tendon);steelwire;Concretereinforcement--specifications;Prestressedconcrete;Seven-wirestrand(tendon);Steelwire(prestressedconcrete);Steelwirestrand--specifications
【摘要】:1.1Thisspecificationcoverstwotypesandtwogradesofseven-wire,uncoatedsteelstrandforuseinpretensionedandpost-tensionedprestressedconcreteconstruction.Thetwotypesofstrandarelow-relaxationandstress-relieved(normal-relaxation).Low-relaxationstrandshallberegardedasthestandardtype.Stress-relieved(normal-relaxation)strandwillnotbefurnishedunlessspecificallyordered,orbyarrangementbetweenpurchaserandsupplier.Grade1725[250]andGrade1860[270]haveminimumultimatestrengthsof1725MPa[250ksi]and1860MPa[270ksi],respectively,basedonthenominalareaofthestrand.1.2Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedasstandard.Withinthetext,theinch-poundunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecification.1.3ThesupplementaryrequirementsinS1shallbespecifiedfor15.2-mm[0.600-in.]diameteruncoatedseven-wiresteelstrandifneededforapplicationsinprestressedgroundanchors.
【中国标准分类号】:H49
【国际标准分类号】:77_140_15
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:StandardSpecificationforIron-NickelSealingAlloys
【原文标准名称】:铁镍密封合金标准规范
【标准号】:ASTMF30-1996(2002)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:F01.03
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:镍;铁;电子工程;密封;合金
【英文主题词】:glass-to-metalsealingapplications;iron-nickelalloys;UNSK94600;UNSK94800;UNSN14052;vacuumelectronics
【摘要】:1.1Thisspecificationcoversiron-nickelalloysthatareintendedprimarilyforsealingtoglassinelectronicapplications.Note18212;Someofthesealloysmaybeusedforsealingtoceramics,butthisspecificationinitspresentformisnotintendedtocovermaterialformetal-to-ceramicseals.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Thehazardstatementpertainsonlytothetestmethodsections,Sections10and12.
【中国标准分类号】:H42
【国际标准分类号】:77_120_40
【页数】:5P.;A4
【正文语种】: