Product Code:SAE AMS4333
Title:Aluminum Alloy, Die Forgings, 6.2Zn - 2.3Cu - 2.2Mg - 0.12Zr (7050-T7452), Solution Heat Treated, Compression Stress-Relieved, and Overaged
Issuing Committee:Ams D Nonferrous Alloys Committee
Scope:This specification covers an aluminum alloy in the form of die forgings 4 inches (102 mm) and under in nominal thickness and of forging stock.These forgings have been used typically for machined structural parts subject to warpage during machining and requiring high strength and resistance to stress-corrosion cracking, but usage is not limited to such application.【英文标准名称】:StandardTestMethodforEstimationofNetandGrossHeatofCombustionofBurnerandDieselFuels
【原文标准名称】:燃烧炉燃料和柴油机燃料燃烧的净热量和总热量估算的标准试验方法
【标准号】:ASTMD4868-2000(2005)
【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】:D02.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;热值;热值;矿物油;机动车燃料
【英文主题词】:burnerfuels;dieselfuels;grossheatofcombustion;heatenergy;heatofcombustion;heatingtests;netheatofcombustion
【摘要】:Thistestmethodisintendedforuseincaseswhereanexperimentaldeterminationofheatofcombustionisnotavailableandcannotbemadeconveniently,andwhereanestimateisconsideredsatisfactory.Itisnotintendedasasubstituteforexperimentalmeasurementofheatofcombustion.1.1ThistestmethodcoverstheestimationofthegrossandnetheatofcombustioninSIunits,megajoulesperkilogram,ofpetroleumfuelsfromthefueldensity,sulfur,water,andashcontent.Note18212;TheequationforestimationofnetandgrossheatofcombustionusedinthismethodwereoriginallypublishedbytheNISTPublicationNo.97.1.2Thistestmethodisespeciallyusefulforestimating,usingaminimumnumberoftests,theheatofcombustionofburneranddieselfuelsforwhichitisnotusuallycriticaltoobtainverypreciseheatdeterminations.Note2&38212;Moreaccurateestimationmethodsareavailableforaviationfuels(TestMethodsD1405andD3338,andD4529).However,thoseestimationmethodsrequireadditionalteststothoserequiredinthistestmethod.1.3Thistestmethodispurelyempirical(NOTE1).ItisapplicableonlytoliquidhydrocarbonfuelsderivedbynormalrefiningprocessesfromconventionalcrudeoilthatconformtotherequirementsofspecificationsforpetroleumfuelsasdescribedinNote3.Thistestmethodisvalidforthosefuelsinthedensityrangefrom750to1000kg/m3andthosethatdonotcontainanunusuallyhigharomaticcontent.Higharomaticcontentfuelswillnotnormallymeetfuelspecificationcriteria.Note38212;Theestimationoftheheatofcombustionofahydrocarbonfuelfromitsdensityandsulfur,water,andashcontentisjustifiableonlywhenthefuelbelongstowell-definedclassesforwhicharelationshipbetweenthesequantitieshavebeenderivedfromaccurateexperimentalmeasurementsonrepresentativesamplesoftheseclasses.Evenintheseclasses,thepossibilitythattheestimatemaybeinerrorbylargeamountsforindividualfuelsshouldberecognized.Thistestmethodhasbeentestedforalimitednumberoffuelsfromoilsandbitumenandshaleoiloriginandhasbeenfoundtobevalid.Theclassesoffuelsusedtoestablishthecorrelationpresentedinthistestmethodarerepresentedbythefollowingapplications:FuelSpecificationFuelOilsGrades1,2,4(light),4,5(light),5(heavy),and6D396DieselGrades1-D,2-D,and4-dD975AviationTurbineJetA,JetA-1,andJetBD1655GasTurbineGrades0-GT,1-GT,2-GT,3-GTand4-GTD2880KerosineGrades1-Kand2-KD3699