SAE AS7475 Bolts, Cobalt-Chromium-Nickel Alloy Uns R30159, Tensile Strength 260 Ksi, Procurement Specification
时间:2024-05-24 16:10:32 来源: 标准资料网 作者：标准资料网 阅读：9676
Product Code:SAE AS7475
Title:Bolts, Cobalt-Chromium-Nickel Alloy Uns R30159, Tensile Strength 260 Ksi, Procurement Specification
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope:This procurement specification covers bolts made from a corrosion and heat resistant, work-strengthened, cobalt-chromium-nickel alloy of the type identified under the Unified Numbering System as UNS R30159. The following specification designations and their properties are covered: AS7475 260 ksi minimum ultimate tensile strength at room temperature; 205 ksi minimum ultimate tensile strength at 1100 degrees F; 140 ksi stress-rupture strength at 1100 degrees F; 135 ksi tension to 13.5 ksi tension fatigue at room temperature; AS7475-1 260 ksi minimum ultimate tensile strength at room temperature; 132 ksi minimum ultimate shear strength at room temperature.
【英文标准名称】:Gasheatedcateringequipment;part1:safetyrequirements;germanversionEN203-1:1992
【原文标准名称】:用液体燃料的大型厨房器具.第1部分:安全性的一般规定
【标准号】:DINEN203T.1-1992
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:
【英文标准名称】:StandardTestMethodsforStressRelaxationTestsforMaterialsandStructures
【原文标准名称】:材料和结构件应力松弛的标准试验方法
【标准号】:ASTME328-2002(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:E28.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:bendingrelaxation;bolting;compressionrelaxation;hoopstresses;riveting;springs;stressrelaxation;tensionrelaxation;torsionrelaxation;Bendingrelaxation;Castings;Compressiontesting--metallicmaterials;Elongation--metallicmaterials;
【摘要】:Relaxationtestdataarenecessarywhendesigningmostmechanicallyfastenedjointstoassurethepermanenttightnessofboltedorrivetedassemblies,pressorshrink-fitcomponents,rolled-intubes,etc.Otherapplicationsincludepredictingthedecreaseinthetightnessofgaskets,inthehoopstressofsolderlesswrappedconnections,intheconstrainingforceofsprings,andthestabilityofwiretendonsinprestressedconcrete.Theabilityofamaterialtorelaxathigh-stressconcentrationssuchasarepresentatnotches,inclusions,cracks,holes,fillets,etc.,maybepredictedfromstressrelaxationdata.Suchtestdataarealsousefultojudgetheheat-treatmentconditionnecessaryforthethermalreliefofresidualinternalstressesinforgings,castings,weldments,machinedorcold-workedsurfaces,etc.Thetestsoutlinedinthesemethodsarelimitedtoconditionsofapproximatelyconstantconstraintandenvironment.Thetestresultsarehighlysensitivetosmallchangesinenvironmentalconditionsandthusrequireprecisecontroloftestconditionsandmethods.Thereproducibilityofdatawilldependonthemannerwithwhichalltestconditionsarecontrolled.Theeffectsofagingorresidualstressmaysignificantlyaffectresults,asmayvariationsinmaterialcomposition.Note18212;Themethodoftestingforthestressrelaxationofplasticshasbeenwithdrawnfromthisstandard,andtheresponsibilityhasbeentransferredtoPracticeD2991.1.1Thesetestmethodscoverthedeterminationofthetimedependenceofstress(stressrelaxation)inmaterialsandstructuresunderconditionsofapproximatelyconstantconstraint,constantenvironment,andnegligiblevibration.Intheproceduresrecommended,thematerialorstructureisinitiallyconstrainedbyexternallyappliedforces,andthechangeintheexternalforcenecessarytomaintainthisconstraintisdeterminedasafunctionoftime.1.2Specificmethodsforconductingstressrelaxationtestsonmaterialssubjectedtotension,compression,bendingandtorsionstressesaredescribedinPartsA,B,C,andD,respectively.Thesetestmethodsalsoincluderecommendationsforthenecessarytestingequipmentandfortheanalysisofthetestdata.1.3Itisrecognizedthatthelongtimeperiodsrequiredforthesetypesoftestsareoftenunsuitedforroutinetestingorforspecificationinthepurchaseofmaterial.However,thesetestsarevaluabletoolsinobtainingpracticaldesigninformationonthestressrelaxationofmaterialssubjectedtotheconditionsenumerated,andininvestigationsofthefundamentalbehaviorofmaterials.1.4Units8212;Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.13.1Thistestmethodcoversthedeterminationofthetime-dependentdecreaseinstressinaspecimensubjectedtoanuniaxialconstanttensionstrainunderconditionsofuniformenvironmentandnegligiblevibration.Italsoincludesrecommendationsforthenecessarytestingequipment.22.1Thistestmethodcoversthedeterminationofthetime-dependentdecreaseinstressinaspecimensubjectedtoalongduration,uniaxial,constantcompressionstraininauniformenvironmentandnegligible......
【中国标准分类号】:A20
【国际标准分类号】:19_020
【页数】:13P.;A4
【正文语种】:英语