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【英文标准名称】:StandardGuideforEstimatingtheAtmosphericCorrosionResistanceofLow-AlloySteels
【原文标准名称】:低合金钢耐大气腐蚀估价的标准指南
【标准号】:ASTMG101-2004(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【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】:G01.04
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:atmosphericcorrosionresistance;compositionaleffects;corrosionindices;high-strength;low-alloysteel;industrialenvironments;marineenvironments;ruralenvironments;weatheringsteels;Ruralenvironments;Steelcomposition;Structuralsteel(SS);
【摘要】:Inthepast,ASTMspecificationsforlow-alloyweatheringsteels,suchasSpecificationsA242/A242M,A588/A588M,A606Type4,A709/A709MGrade50W,HPS70W,and100W,A852/A852M,andA871/A871Mstatedthattheatmosphericcorrosionresistanceofthesesteelsisx201C;approximatelytwotimesthatofcarbonstructuralsteelwithcopper.x201D;Afootnoteinthespecificationsstatedthatx201C;twotimescarbonstructuralsteelwithcopperisequivalenttofourtimescarbonstructuralsteelwithoutcopper(Cu0.02maximum).x201D;Becausesuchstatementsrelatingthecorrosionresistanceofweatheringsteelstothatofothersteelsareimpreciseand,moreimportantly,lacksignificancetotheuser(1and2),thepresentguidewaspreparedtodescribemoremeaningfulmethodsofestimatingtheatmosphericcorrosionresistanceofweatheringsteels.Thefirstmethodofthisguideisintendedforuseinestimatingtheexpectedlong-termatmosphericcorrosionlossesofspecificgradesoflow-alloysteelsinvariousenvironments,utilizingexistingshort-termatmosphericcorrosiondataforthesegradesofsteel.Thesecondmethodofthisguideisintendedforuseinestimatingtherelativeatmosphericcorrosionresistanceofaspecificheatoflow-alloysteel,basedonitschemicalcomposition.Itisimportanttorecognizethatthemethodspresentedherearebasedoncalculationsmadefromtestdataforflat,boldlyexposedsteelspecimens.Atmosphericcorrosionratescanbemuchhigherwhentheweatheringsteelremainswetforprolongedperiodsoftime,orisheavilycontaminatedwithsaltorothercorrosivechemicals.Therefore,cautionmustbeexercisedintheapplicationofthesemethodsforpredictionoflong-termperformanceofactualstructures.1.1Thisguidepresentstwomethodsforestimatingtheatmosphericcorrosionresistanceoflow-alloyweatheringsteels,suchasthosedescribedinSpecificationsA242/A242M,A588/A588M,A606Type4,A709/A709Mgrades50W,HPS70W,and100W,A852/A852M,andA871/A871M.Onemethodgivesanestimateofthelong-termthicknesslossofasteelataspecificsitebasedonresultsofshort-termtests.Theothergivesanestimateofrelativecorrosionresistancebasedonchemicalcomposition.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.
【中国标准分类号】:H25
【国际标准分类号】:77_060
【页数】:9P.;A4
【正文语种】:英语


【英文标准名称】:Fixedfirefightingsystems-Componentsforgasextinguishingsystems-Part5:Requirementsandtestmethodsforhighandlowpressureselectorvalvesandtheiractuators;EnglishversionofDINEN12094-5:2006-07
【原文标准名称】:固定式消防系统.气体灭火系统元件.第5部分:高和低压力选择器阀及其启动器的要求和试验方法
【标准号】:DINEN12094-5-2006
【标准状态】:现行
【国别】:德国
【发布日期】:2006-07
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:二氧化碳;CE标记;组件;合格;腐蚀;定义;灭火器;内装式灭火器;消防;消防设备;气体的;高压;烃类;惰性气体;低压;作标记;压力;合格试验;释放设备;规范(验收);固定的;材料强度;试验;真空管器件散件;阀门;工作压力
【英文主题词】:
【摘要】:TheprojectspecifiesrequirementsanddescribestestmethodsforhighandlowpressureselectorvalvesandtheiractuatorsusedinCO2,inertgasorhalocarbongasfireextinguishingsystems.#,,#
【中国标准分类号】:C84
【国际标准分类号】:13_220_20
【页数】:31P.;A4
【正文语种】:英语