SAE AS9494 Bolt, Machine-Hexagon Head, Full, Shank, Corrosion and Heat Resistant Steel, Uns S66286, 130 Ksi Min, .500-20
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来源:标准资料网
Product Code:SAE AS9494
Title:Bolt, Machine-Hexagon Head, Full, Shank, Corrosion and Heat Resistant Steel, Uns S66286, 130 Ksi Min, .500-20 Unjf-3a
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope:No scope available
上一篇:
SAE AS9493 Bolt, Machine - Hexagon Head, Full, Shank, Corrosion and Heat Resistant Steel, Uns S66286, 130 Ksi Min, .4375下一篇:
SAE AS9496 Bolt, Machine - Hexagon Head, Full, Shank, Corrosion and Heat Resistant Steel, Uns S66286, 130 Ksi Min, .625-【英文标准名称】:Specificationforsteelpipesandtubesforpressurepurposes:carbonandcarbonmanganesesteelwithspecifiedelevatedtemperatureproperties-Specificationforlongitudinallyarcweldedtubes
【原文标准名称】:具有规定高温特性的碳素钢和碳锰钢承压钢管.第2部分:纵向电弧焊管规范
【标准号】:BS3602-2-1991
【标准状态】:作废
【国别】:英国
【发布日期】:1991-10-31
【实施或试行日期】:1991-10-31
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【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】:H48;J33
【国际标准分类号】:23_040_10;77_140_75
【页数】:24P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforDensityofPolyethylenebytheUltrasoundTechnique
【原文标准名称】:用超声波技术测定聚乙烯密度的标准试验方法
【标准号】:ASTMD4883-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D20.70
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:amorphous;crystalline;density;molded;plaques;polyethylene;sonic;ultrasonic;ultrasound;Density--plastics;Polyethylene(PE);Ultrasoundtesting
【摘要】:Thedensityofpolyethyleneisaconvenientlymeasurablepropertywhichisfrequentlyusefulasameansoffollowingphysicalchangesinasample,asanindicationofuniformityamongsamples,andasameansofidentification.Thistestmethodisdesignedtoyieldresultswithaprecisionofx00B1;0.08%orbetter.1.1Thistestmethodcoversthedeterminationofthedensityofpolyethylenethroughtheutilizationofultrasoundequipment.1.2Thistestmethodisbasedonthedistinctbehaviorsoftheamorphousandcrystallinephasesofpolyethyleneinresponsetoultrasound.Polyethyleneshallbeviewedasacompositestructurewherehigh-densitycrystallineregionsareconnectedbylower-densityamorphousmaterial.Theratioofcrystallinetoamorphousmaterialdeterminesthefinaldensityofthematerial.Theamorphousandcrystallinephasesexhibitverydistinctbehaviorswithregardtothepropagationofsoundwaves.Thepropagationcharacteristicsinthecompositewilldependontherelativeamountofthetwophases(thedegreeofcrystallinity).1.3InorganicmaterialsincreasedensityasmeasuredbyTestMethodsD792andD1505,buttheyhavelittleornoeffectonultrasonicdensity.Theultrasonicmeasurementisbasicallyabaseresindensity.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThereisnoknownISOequivalenttothisstandard.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:4P.;A4
【正文语种】:英语
