SAE AMS7454 Bolts And Screws, Low-Alloy Steel, Heat Resistant Normalized Andtempered, Roll Threaded 135,000 Psi (Cancell

作者:标准资料网 时间:2024-05-20 06:10:30   浏览:9943   来源:标准资料网
下载地址: 点击此处下载
Product Code:SAE AMS7454
Title:Bolts And Screws, Low-Alloy Steel, Heat Resistant Normalized Andtempered, Roll Threaded 135,000 Psi (Cancelled Jul 2002)
Issuing Committee:Ams E Carbon And Low Alloy Steels Committee
Scope:1. SCOPE:1.1 Type: This specification covers high quality holts and screws made of a low-alloy, heat resistantsteel.1. 2 Application: Primarily for joining parts where high strength up to 900'F (480'C) is reqnired.
下载地址: 点击此处下载
基本信息
标准名称:作业场所空气中邻苯二甲酸二丁酯和邻苯二甲酸二辛酯的高效液相色谱测定方法
英文名称:Workplace air —Determination of dibutyl phthalate and di-n-octyl phthalate—High-performance liquid chromatography method
中标分类: 医药、卫生、劳动保护 >> 卫生 >> 劳动卫生
替代情况:被GBZ/T 160.66-2004代替
发布日期:1999-12-29
实施日期:2000-05-01
首发日期:1900-01-01
作废日期:1900-01-01
出版社:中国标准出版社
出版日期:2004-06-24
页数:5页
书号:155066.2-13197
适用范围

没有内容

前言

没有内容

目录

没有内容

引用标准

没有内容

所属分类: 医药 卫生 劳动保护 卫生 劳动卫生
【英文标准名称】:StandardPracticeforConductingandEvaluatingLaboratoryCorrosionsTestsinSoils
【原文标准名称】:进行和评价实验室土壤腐蚀试验的标准操作规程
【标准号】:ASTMG162-1999(2004)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:G01.10
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:原电池腐蚀;局部腐蚀;埋入土;腐蚀性;土壤腐蚀;地下;腐蚀试验;电解质
【英文主题词】:corrosiontest;corrosivity;electrolyte;localizedcorrosion;galvaniccorrosion;soilburial;soilcorrosion;underground
【摘要】:Thispracticeprovidesacontrolledcorrosiveenvironmentthathasbeenutilizedtoproducerelativecorrosioninformation.Theprimaryapplicationofthedatafromthispracticeistoevaluatemetallicmaterialsforuseinsoilenvironments.Thispracticemaynotduplicateallfieldconditionsandvariablessuchasstraycurrents,microbiologicallyinfluencedcorrosion,non-homogeneousconditions,andlongcellcorrosion.Thereproducibilityofresultsinthepracticeishighlydependentonthetypeofspecimentestedandtheevaluationcriteriaselectedaswellasthecontroloftheoperatingvariables.Inanytestingprogram,sufficientreplicatesshouldbeincludedtoestablishthevariabilityoftheresults.Structuresandcomponentsmaybemadeofseveraldifferentmetals;therefore,thepracticemaybeusedtoevaluategalvaniccorrosioneffectsinsoils(seeGuideG71).Structuresandcomponentsmaybecoatedwithsacrificialornoblemetalcoatings,whichmaybescratchedorotherwiserendereddiscontinuous(forexample,nocoatingontheedgesofmetalstripscutfromawidesheet).Thistestisusefultoevaluatetheeffectofdefectivemetalliccoatings.Structuresandcomponentsmaybecoatedorjacketedwithorganicmaterials(forexample,paintsandplastics),andthesecoatingsandjacketsmayberendereddiscontinuous.Thetestisusefultoevaluatetheeffectofdefectiveorincompletelycoveringcoatingsandjackets.Thecorrosivityofsoilsstronglydependsonsolublesaltcontent(relatedparametersaresoilresistivity,seeTestMethodG57,andchemistry),acidityoralkalinity(measuredbysoilpH,seeTestMethodG51),andoxygencontent(loose,forexample,sand,orcompact,forexample,clay,soilsareextremeexamples).Themanufacturer,supplier,oruser,orcombinationthereof,shouldestablishthenatureoftheexpectedsoilenvironment(s)andselectthetestenvironment(s)accordingly.Multipletypesofsoilcanbeusedtodeterminetheeffectofthisvariable.1.1Thispracticecoversproceduresforconductinglaboratorycorrosiontestsinsoilstoevaluatethecorrosiveattackonengineeringmaterials.1.2Thispracticecoversspecimenselectionandpreparation,testenvironments,andevaluationoftestresults.1.3Thispracticedoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:91_100_01
【页数】:4P.;A4
【正文语种】: