SAE AMS6257 Steel Bars, Forgings, and Tubing 1.6si 0.82cr 1.8ni 0.40mo 0.08v (0.40-0.44c) Consumable Electrode Vacuum Re

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Product Code:SAE AMS6257
Title:Steel Bars, Forgings, and Tubing 1.6si 0.82cr 1.8ni 0.40mo 0.08v (0.40-0.44c) Consumable Electrode Vacuum Remelted Normalized and Tempered
Issuing Committee:Ams E Carbon And Low Alloy Steels Committee
Scope:This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
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【英文标准名称】:StandardTestMethodsforHydroxylGroupsUsingAceticAnhydrideAcetylation
【原文标准名称】:用乙酸酐乙酰化测定羟基团的标准试验方法
【标准号】:ASTME222-2000(2005)e1
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:E15.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aceticanhydride;acetylation;hydroxyl;hydroxylgroups;hydroxylnumber;primary;secondary;volumetric
【摘要】:Hydroxylisanimportantfunctionalgroup,andknowledgeofitscontentisrequiredinmanyintermediateandenduseapplications.Thetestmethodsdescribedhereinareforthedeterminationofprimaryandsecondaryhydroxylgroupsandcanbeusedfortheassayofcompoundscontainingthem.1.1Thesetestmethodscoverthedeterminationofhydroxylgroupsattachedtoprimaryandsecondarycarbonatomsinaliphaticandalicycliccompoundsandphenols.1.2Threetestmethodsaregivenasfollows:SectionsTestMethodA(PressureBottleMethod)8-14TestMethodB(RefluxMethod)15-21TestMethodC(PerchloricAcidCatalyzedMethod)22-28【英文标准名称】:Electricalapparatusforexplosivegasatmospheres;part7:increasedsafety"e"
【原文标准名称】:防爆电气设备.第7部分:"E"防爆型电气设备的结构和试验
【标准号】:IEC60079-7-1990
【标准状态】:作废
【国别】:国际
【发布日期】:1990-08
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC31C
【标准类型】:()
【标准水平】:()
【中文主题词】:电气工程;防护等级;防护电气设备;电驱动装置;e型防护电气设备;爆炸性环境;防爆;可燃性环境;试验;定义
【英文主题词】:
【摘要】:
【中国标准分类号】:K35
【国际标准分类号】:29_260_20
【页数】:73P;A4
【正文语种】:英语