1、Designation:D97521Standard Specification forDiesel Fuel1This standard is issued under the fixed designation D975;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
2、last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification covers seven grades of diesel fuelsuitable for various types of diesel engines
3、.These grades aredescribed as follows:1.1.1 Grade No.1-D S15A special-purpose,light middledistillate fuel for use in diesel engine applications requiring afuel with 15 ppm sulfur(maximum)and higher volatility thanthat provided by Grade No.2-D S15 fuel.21.1.2 Grade No.1-D S500A special-purpose,light
4、middledistillate fuel for use in diesel engine applications requiring afuel with 500 ppm sulfur(maximum)and higher volatility thanthat provided by Grade No.2-D S500 fuel.21.1.3 Grade No.1-D S5000A special-purpose,lightmiddle distillate fuel for use in diesel engine applicationsrequiring a fuel with
5、5000 ppm sulfur(maximum)and highervolatility than that provided by Grade No.2-D S5000 fuels.1.1.4 Grade No.2-D S15A general purpose,middle dis-tillate fuel for use in diesel engine applications requiring a fuelwith 15 ppm sulfur(maximum).It is especially suitable for usein applications with conditio
6、ns of varying speed and load.21.1.5 Grade No.2-D S500A general-purpose,middledistillate fuel for use in diesel engine applications requiring afuel with 500 ppm sulfur(maximum).It is especially suitablefor use in applications with conditions of varying speed andload.21.1.6 Grade No.2-D S5000A general
7、-purpose,middledistillate fuel for use in diesel engine applications requiring afuel with 5000 ppm sulfur(maximum),especially in conditionsof varying speed and load.1.1.7 Grade No.4-DA heavy distillate fuel,or a blend ofdistillate and residual oil,for use in low-and medium-speeddiesel engines in app
8、lications involving predominantly con-stant speed and load.NOTE1A more detailed description of the grades of diesel fuels isgiven in X1.2.NOTE2The Sxxx designation has been adopted to distinguish gradesby sulfur rather than using words such as“Low Sulfur”as previouslybecause the number of sulfur gra
9、des is growing and the word descriptionswere thought to be not precise.S5000 grades correspond to the so-called“regular”sulfur grades,the previous No.1-D and No.2-D.S500 gradescorrespond to the previous“Low Sulfur”grades.S15 grades were not inthe previous grade system and are commonly referred to as
10、“Ultra-LowSulfur”grades or ULSD.1.2 This specification,unless otherwise provided by agree-ment between the purchaser and the supplier,prescribes therequired properties of diesel fuels at the time and place ofdelivery.1.2.1 Nothing in this specification shall preclude observanceof federal,state,or lo
11、cal regulations which can be morerestrictive.NOTE3The generation and dissipation of static electricity can createproblems in the handling of distillate diesel fuels.For more information onthe subject,see Guide D4865.1.3 The values stated in SI units are to be regarded asstandard.No other units of me
12、asurement are included in thisstandard.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World T
13、rade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:3D56 Test Method for Flash Point by Tag Closed Cup TesterD86 Test Method for Distillation of Petroleum Products and1This specification is under the jurisdiction of ASTM Committee D02 onPetroleum Produ
14、cts,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.E0 on Burner,Diesel and Non-Aviation Gas Turbine Fuels.Current edition approved Aug.1,2021.Published October 2021.Originallyapproved in 1948.Last previous edition approved in 2020 as D975 20c.DOI:10.1520/D0975-21.2Th
15、is fuel complies with 40 CFR Part 80Control of Air Pollution from NewMotor Vehicles:HeavyDuty Engines and Vehicle Standards and Highway DieselFuel Sulfur Control Requirements:Final Rule.Regulation of Fuels and FuelAdditives:Fuel Quality Regulations for Highway Diesel Fuel Sold in 1993 andLater Calen
16、dar Years.3For 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 StatesThis international standard was developed in accordance with internationally recogn
