SAE AMS2550 Treatment of Sheet Metal Parts, Corrosion-Resistant Steel (NONCURRENT)

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Product Code:SAE AMS2550
Title:Treatment of Sheet Metal Parts, Corrosion-Resistant Steel (NONCURRENT)
Issuing Committee:Ams B Finishes Processes And Fluids Committee
Scope:This specification covers the enginering requirements for a treatment to provide enhanced corrosion resistance to sheet metal parts, such as brackets, spacers, and washers, fabricated from martensitic corrosion-resistant steels, usually AMS 5504 or AMS 5508 and having hardness not higher than 40 HRC, or ferritic corrosion-resistant steels, usually AMS 5506. The treatment is not recommended for use on parts subject to impact in service.
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基本信息
标准名称:核工业铀矿冶工程设计规范
英文名称:Code for design of uranium mining and metallurgy engineering in nuclear industry
发布部门:中华人民共和国住房和城乡建设部
发布日期:2009-11-30
实施日期:2010-04-01
首发日期:
作废日期:
起草单位:中国核工业集团公司
出版社:中国计划出版社
出版日期:2010-04-01
页数:大32开,平装
书号:1580177.324
适用范围

本规范适用于新建、改建、扩建核工业铀矿冶工程设计。
本规范面向相关行业的设计单位及管理部门,相关专业的技术人员等,图书、资料库。

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所属分类: 纺织 纺织制品 线 带 绳 纺织和皮革技术 纺织产品 纱线
【英文标准名称】:StandardPracticeforExtremeValueAnalysisofNonmetallicInclusionsinSteelandOtherMicrostructuralFeatures
【原文标准名称】:在钢铁和其它微结构特点中非金属内含物的极值分析的标准实施规程
【标准号】:ASTME2283-2008
【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】:E04.09
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:extremevaluestatistics;inclusionlength;maximuminclusionlength;maximumlikelihoodmethod;Extremevaluestatistics;Inclusionlength;Inclusions;Indigenousinclusions;Maximuminclusionlength;Metallographicanalysis/inspection;Microstructure
【摘要】:Thispracticeisusedtoassesstheindigenousinclusionsorsecond-phaseconstituentsinmetalsusingextremevaluestatistics.Itiswellknownthatfailuresofmechanicalcomponents,suchasgearsandbearings,areoftencausedbythepresenceoflargenonmetallicoxideinclusions.Failureofacomponentcanoftenbetracedtothepresenceofalargeinclusion.PredictionsrelatedtocomponentfatiguelifearenotpossiblewiththeevaluationsprovidedbystandardssuchasTestMethodsE45,PracticeE1122,orPracticeE1245.Theuseofextremevaluestatisticshasbeenrelatedtocomponentlifeandinclusionsizedistributionsbyseveraldifferentinvestigators(3-8).Thepurposeofthispracticeistocreateastandardizedmethodofperformingthisanalysis.Thispracticeisnotsuitableforassessingtheexogenousinclusionsinsteelsandothermetalsbecauseoftheunpredictablenatureofthedistributionofexogenousinclusions.Othermethodsinvolvingcompleteinspectionsuchasultrasonicsmustbeusedtolocatetheirpresence.1.1Thispracticedescribesamethodologytostatisticallycharacterizethedistributionofthelargestindigenousnonmetallicinclusionsinsteelspecimensbaseduponquantitativemetallographicmeasurements.Thepracticeisnotsuitableforassessingexogenousinclusions.1.2Baseduponthestatisticalanalysis,thenonmetalliccontentofdifferentlotsofsteelscanbecompared.1.3Thispracticedealsonlywiththerecommendedtestmethodsandnothinginitshouldbeconstruedasdefiningorestablishinglimitsofacceptability.1.4ThemeasuredvaluesarestatedinSIunits.Formeasurementsobtainedfromlightmicroscopy,linearfeatureparametersshallbereportedasmicrometers,andfeatureareasshallbereportedasmicrometers.1.5Themethodologycanbeextendedtoothermaterialsandtoothermicrostructuralfeatures.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H11
【国际标准分类号】:77_040_99
【页数】:11P.;A4
【正文语种】:英语