ASTM_D_7547_-_15.pdf

Designation:D754715An American National StandardStandard Specification forHydrocarbon Unleaded Aviation Gasoline1This standard is issued under the fixed designation D7547;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers formulating specifications forpurchases of aviation gasoline under contract and is intendedprimarily for use by purchasing agencies.1.2 Unleaded aviation gasoline defined by this specificationis for use in engines and associated aircraft that are specificallyapproved by the engine and aircraft manufacturers.This fuel isnot considered suitable for use in other engines and associatedaircraft that are certified to use only leaded aviation gasolinesof the same octane grade.1.3 This specification,unless otherwise provided,prescribesthe required properties of unleaded aviation gasoline at thetime and place of delivery.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D86 Test Method for Distillation of Petroleum Products atAtmospheric PressureD130 Test Method for Corrosiveness to Copper from Petro-leum Products by Copper Strip TestD323 Test Method for Vapor Pressure of Petroleum Products(Reid Method)D873 Test Method for Oxidation Stability of Aviation Fuels(Potential Residue Method)D1094 Test Method for Water Reaction of Aviation FuelsD1298 Test Method for Density,Relative Density,or APIGravity of Crude Petroleum and Liquid Petroleum Prod-ucts by Hydrometer MethodD2386 Test Method for Freezing Point of Aviation FuelsD2622 Test Method for Sulfur in Petroleum Products byWavelength Dispersive X-ray Fluorescence SpectrometryD2624 Test Methods for Electrical Conductivity of Aviationand Distillate FuelsD2700 Test Method for Motor Octane Number of Spark-Ignition Engine FuelD3237 Test Method for Lead in Gasoline byAtomicAbsorp-tion SpectroscopyD3338 Test Method for Estimation of Net Heat of Combus-tion of Aviation FuelsD4052 Test Method for Density,Relative Density,and APIGravity of Liquids by Digital Density MeterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4171 Specification for Fuel System Icing InhibitorsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD4306 Practice for Aviation Fuel Sample Containers forTests Affected by Trace ContaminationD4529 Test Method for Estimation of Net Heat of Combus-tion of Aviation FuelsD4809 Test Method for Heat of Combustion of LiquidHydrocarbon Fuels by Bomb Calorimeter(PrecisionMethod)D4865 Guide for Generation and Dissipation of Static Elec-tricity in Petroleum Fuel SystemsD5006 Test Method for Measurement of Fuel System IcingInhibitors(Ether Type)in Aviation FuelsD5059 Test Methods for Lead in Gasoline by X-Ray Spec-troscopyD5191 Test Method for Vapor Pressure of Petroleum Prod-ucts(Mini Method)D6469 Guide for Microbial Contamination in Fuels and FuelSystems1This specification is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.J0.02 on Spark and Compression Ignition Aviation EngineFuels.Current edition approved Nov.1,2015.Published November 2015.Originallyapproved in 2009.Last previous edition approved in 2014 as D7547 14b.DOI:10.1520/D7547-15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications3.Terminology3.1 Definitions:3.1.1 unleaded aviation gasoline,ngasoline possessingspecific properties suitable for fueling aircraft powered byreciprocating spark ignition engines,where lead is not inten-tionally added for the purpose of enhancing octane perfor-mance.3.1.1.1 DiscussionPrincipal properties include volatilitylimits,stability,detonation-free performance in the engine forwhich it is intended,and suitability for low temperatureperformance.4.Classification4.1 Two grades of unleaded aviation gasoline are provided,known as:Grades UL91 and UL94.NOTE1Grades UL91 and UL94 are based on their octane number asmeasured