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【英文标准名称】:StandardPracticeforSteelBars,SelectionGuide,Composition,andMechanicalProperties
【原文标准名称】:钢棒的成分及机械性能选择指南的标准操作规程
【标准号】:ASTMA400-1969(2006)
【标准状态】:现行
【国别】:
【发布日期】:1969
【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】:A01.15
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:机械性能;组分;钢;棒材;选择
【英文主题词】:steelbars
【摘要】:Ifthedesiredmechanicalpropertiesareasdescribedin4.1.1formaterialidentifiedasClassesP-1throughP-7,orin4.1.2formaterialidentifiedasClassesQ-1throughQ-7,thestrengthleveldesiredcanbebasedonhardnessortheequivalenttensileoryieldstrengthasshowninTables1-4.Ifthedesiredmechanicalpropertiesareassetforthin4.1.3formaterialidentifiedasClassesR-1throughR-6,thestrengthlevelisbasedonyieldstrengthasshowninTables5and6.Theuser,afterdeterminingthemechanicalpropertyrequirementsofthecriticalsection(thatcarryingthegreateststress)ofthepart,shouldselectthecompositionorcompositionsfromTables1-6thatfulfillstheserequirementsandismostsuitableforprocessing.1.1Thispracticecoverstheselectionofsteelbarsaccordingtosectionandtothemechanicalpropertiesdesiredintheparttobeproduced.Thisisnotaspecificationfortheprocurementofsteel.ApplicableprocurementspecificationsarelistedinSection.1.2Severalsteelcompositionsintendedforvarioussectionsandmechanicalpropertyrequirementsarepresentedin.Thecriteriaforplacingasteelcompositioninoneofthethreegeneralclassdesignations,ClassesP,Q,andR(describedinSection)areasfollows:1.2.1ClassesPandQshouldbecapableofdevelopingthemechanicalpropertiesshowninbyliquidquenchingfromasuitableaustenitizingtemperature,andtemperingat800F(427C)orhigher.Ahardnessindicatedbytestsmadeatalocationshownin,A,B,orC,istakenasevidencethatacompositioniscapableofmeetingotherequivalentmechanicalpropertiesshowninthetables.Normalgoodshoppracticesareassumed,withcontrolofaustenitizingandtemperingtemperatures,andmildagitationofthepartinthequenchingbath.1.2.2ClassRshouldbecapableofdevelopingthemechanicalpropertiesshowninashotrolled,bycolddrawing,orbycolddrawingwithadditionalthermaltreatment.Thelocationsforobtainingtensiontestsaredescribedin.1.3Itisnotimpliedthatthecompositionslistedinthetablesaretheonlyonessatisfactoryforacertainclassandmechanicalpropertyrequirement.Steelswithloweralloycontentsareoftensatisfactorythroughtheuseofspecialprocessingtechniques.1.4Thevaluesstatedininch-pundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsareprovidedforinformationonlyandarenotconsideredstandard.
【中国标准分类号】:H44
【国际标准分类号】:77_140_60
【页数】:9P.;A4
【正文语种】:


【英文标准名称】:BoltsandscrewsforT-slots
【原文标准名称】:T型槽用螺栓和螺钉
【标准号】:DIN787-2002
【标准状态】:作废
【国别】:德国
【发布日期】:2002-06
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:设计;材料;作标记;名称与符号;重量;螺钉;砝码;T形槽;尺寸
【英文主题词】:marking;materials;design;weights;screws(bolts);designations;dimensions;teeslots;strainingscrews
【摘要】:
【中国标准分类号】:J13
【国际标准分类号】:21_060_10
【页数】:5P;A4
【正文语种】:德语