SAE J121 Decarburization in Hardened and Tempered Unified Threaded Fasteners

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Product Code:SAE J121
Title:Decarburization in Hardened and Tempered Unified Threaded Fasteners
Issuing Committee:Fasteners Committee
Scope: This SAE Recommended Practice covers methods for measuring, classifying, and specifying decarburization in the threaded section of hardened and tempered steel bolts, screws, studs, and similar parts. It is not intended to cover products which are specifically carburized to achieve special properties.
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【英文标准名称】:Ambientairquality-Standardmethodforthedeterminationofmercurydeposition
【原文标准名称】:环境空气质量.汞沉积物测定标准方法
【标准号】:BSEN15853-2010
【标准状态】:现行
【国别】:英国
【发布日期】:2010-06-30
【实施或试行日期】:2010-06-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:空气净化;空气质量;环境空气;分析;化学试剂;定义;沉积物;数学计算;测量;测量不确定度;测量范围;测量技术;汞;颗粒;质量控制;抽样方法;验证
【英文主题词】:Airpurification;Airquality;Ambientair;Analysis;Chemicals;Definitions;Deposition;Mathematicalcalculations;Measurement;Measuringincertainity;Measuringranges;Measuringtechniques;Mercury;Particles;Qualitycontrol;Samplingmethods;Verification
【摘要】:ThisEuropeanStandardspecifiesamethodforthedeterminationofthetotaldepositionofmercury.ThisstandardcanbeusedwithintheframeworkoftheEuropeanCouncilDirectiveonAmbientAirQualityAssessmentandManagementandDirective2004/107/EC.PerformancerequirementswithwhichthemethodshouldcomplyarespecifiedinthisEuropeanStandard.TheperformancecharacteristicsofthemethodweredeterminedincomparativefieldvalidationtestscarriedoutattwoEuropeanlocations.ThisEuropeanStandardisapplicabletobackgroundsitesthatareinaccordancewiththerequirementsofDirective2004/107/ECandtourbanandindustrialsites.Thisstandardallowsthesamplingofdepositionusingcylindricaldepositiongauges,andanalysisusingColdVapourAtomicAbsorptionSpectrometry(CVAAS)orColdVapourAtomicFluorescenceSpectrometry(CVAFS)followingexistingharmonisedandstandardisedprocedures.Thestandardisapplicableforthemeasurementofmercuryindepositionbetween1ng/(m2·d)and100ng/(m2·d).ThestandardisvalidatedforthedepositionrangelistedinTable1.
【中国标准分类号】:Z15;Z50
【国际标准分类号】:13_040_20
【页数】:36P.;A4
【正文语种】:英语


【英文标准名称】:Libraryobjectsforarchitecture,engineeringandconstruction.Shapeandmeasurement.Codeofpractice
【原文标准名称】:建筑库,工程库和结构库目标.形状和测量.实施规范
【标准号】:BS8541-3-2012
【标准状态】:现行
【国别】:英国
【发布日期】:2012-09-30
【实施或试行日期】:2012-09-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:建筑图纸;建筑物;计算机辅助设计;建筑;建设系统;建筑系统构件;工程图;图形符号;信息交流;符号;技术制图
【英文主题词】:Architecturaldrawings;Buildings;Computeraideddesign;Construction;Constructionsystems;Constructionsystemsparts;Engineeringdrawings;Graphicsymbols;Informationexchange;Symbols;Technicaldrawing
【摘要】:
【中国标准分类号】:
【国际标准分类号】:01_100_30
【页数】:24P;A4
【正文语种】:英语