ASTM D7826 - 20a

    Standard Guide for Evaluation of New Aviation Gasolines and New Aviation Gasoline Additives

    Active Standard ASTM D7826 | Developed by Subcommittee: D02.J0.02

    Book of Standards Volume: 05.04

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    Significance and Use

    5.1 This guide is intended for the developers or sponsors of new aviation gasolines or additives to describe the data requirements necessary to support the development of specifications for these new products by ASTM members. The ultimate goal of the data generated in accordance with this guide is to provide an understanding of the performance of the new fuel or additive within the property constraints and compositional bounds of the proposed specification criteria.

    5.2 This guide is not an approval process. It is intended to describe test and analysis requirements necessary to generate data to support specification development. This guide does not address the approval process for ASTM International standards.

    5.3 This guide will reduce the uncertainty and risk to developers or sponsors of new aviation gasolines or additives by describing the test and analysis requirements necessary to proceed with the development of an ASTM International specification for aviation gasoline or specification revision for an aviation gasoline additive. There are certain sections within this guide that do not specify an exact number of data points required. For example, requires viscosity to be measured from freezing point to room temperature;,, and require measurements over the operating temperature range; and require measurements versus temperature. In these cases, the developers or sponsors of new aviation gasolines or additives should attempt to generate data close to the upper and lower boundaries indicated. If no boundary is specified (for example, generate data versus temperature), then data at the widest practical test limits should be generated. A minimum of three data points is required in all cases (for example, upper, middle, lower), while five or more data points are preferred.

    5.4 This guide does not purport to specify an all-inclusive listing of test and analysis requirements to achieve ASTM International approval of a specification or specification revision. The final requirements will be dependent upon the specific formulation and performance of the candidate fuel and be determined by the ASTM International task forces and committees charged with overseeing the specification development.

    5.5 This guide is intended to describe data to be used to make a determination of the suitability of the proposed fuel or additive for use in existing or future aircraft and engines, but not necessarily for use in all existing or future aircraft and engines.

    5.6 This guide does not describe data requirements of other approving authorities, such as national aviation regulatory authorities, or of other organizations or industry associations. However, the data generated in the conduct of the procedure may be useful for other purposes or other organizations.

    5.7 Over 200 000 piston-engine aircraft rely on Specification D910 lead-containing aviation gasoline (avgas) for safe operation. There has been an increase in the research and development of alternatives to Specification D910 gasolines as a result of environmental and economic concerns.

    1. Scope

    1.1 This guide provides procedures to develop data for use in research reports for new aviation gasolines or new aviation gasoline additives.

    1.2 This data is intended to be used by the ASTM subcommittee to make a determination of the suitability of the fuel for use as an aviation fuel in either a fleet-wide or limited capacity, and to make a determination that the proposed properties and criteria in the associated standard specification provide the necessary controls to ensure this fuel maintains this suitability during high-volume production.

    1.3 These research reports are intended to support the development and issuance of new specifications or specification revisions for these products. Guidance to develop ASTM International standard specifications for aviation gasoline is provided in Subcommittee J on Aviation Fuels Operating Procedures, Annex A6, “Guidelines for the Development and Acceptance of a New Aviation Fuel Specification for Spark-Ignition Reciprocating Engines.”

    1.4 The procedures, tests, selection of materials, engines, and aircraft detailed in this guide are based on industry expertise to give appropriate data for review. Because of the diversity of aviation hardware and potential variation in fuel/additive formulations, not every aspect may be encompassed and further work may be required. Therefore, additional data beyond that described in this guide may be requested by the ASTM task force, Subcommittee J, or Committee D02 upon review of the specific composition, performance, or other characteristics of the candidate fuel or additive.

    1.5 While it is beyond the scope of this guide, investigation of the future health and environmental impacts of the new aviation gasoline or new aviation gasoline additive and the requirements of environmental agencies is recommended.

    1.6 The values stated in SI units are to be regarded as standard.

    1.6.1 Exception—Some industry standard methodologies utilize imperial units as their primary system (permeability; Table A2.1).

    1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

    1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D86 Test Method for Distillation of Petroleum Products and Liquid Fuels at Atmospheric Pressure

    D97 Test Method for Pour Point of Petroleum Products

    D130 Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip Test

    D156 Test Method for Saybolt Color of Petroleum Products (Saybolt Chromometer Method)

    D323 Test Method for Vapor Pressure of Petroleum Products (Reid Method)

    D381 Test Method for Gum Content in Fuels by Jet Evaporation

    D395 Test Methods for Rubber PropertyCompression Set

    D412 Test Methods for Vulcanized Rubber and Thermoplastic ElastomersTension

    D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)

    D471 Test Method for Rubber PropertyEffect of Liquids

    D664 Test Method for Acid Number of Petroleum Products by Potentiometric Titration

    D873 Test Method for Oxidation Stability of Aviation Fuels (Potential Residue Method)

    D892 Test Method for Foaming Characteristics of Lubricating Oils

    D909 Test Method for Supercharge Rating of Spark-Ignition Aviation Gasoline

    D910 Specification for Leaded Aviation Gasolines

    D924 Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids

    D943 Test Method for Oxidation Characteristics of Inhibited Mineral Oils

    D1002 Test Method for Apparent Shear Strength of Single-Lap-Joint Adhesively Bonded Metal Specimens by Tension Loading (Metal-to-Metal)

    D1056 Specification for Flexible Cellular MaterialsSponge or Expanded Rubber

    D1094 Test Method for Water Reaction of Aviation Fuels

    D1298 Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method

    D1331 Test Methods for Surface and Interfacial Tension of Solutions of Paints, Solvents, Solutions of Surface-Active Agents, and Related Materials

    D1414 Test Methods for Rubber O-Rings

    D1500 Test Method for ASTM Color of Petroleum Products (ASTM Color Scale)

    D1621 Test Method for Compressive Properties of Rigid Cellular Plastics

    D2240 Test Method for Rubber PropertyDurometer Hardness

    D2344/D2344M Test Method for Short-Beam Strength of Polymer Matrix Composite Materials and Their Laminates

    D2386 Test Method for Freezing Point of Aviation Fuels

    D2500 Test Method for Cloud Point of Petroleum Products and Liquid Fuels

    D2583 Test Method for Indentation Hardness of Rigid Plastics by Means of a Barcol Impressor

    D2622 Test Method for Sulfur in Petroleum Products by Wavelength Dispersive X-ray Fluorescence Spectrometry

    D2624 Test Methods for Electrical Conductivity of Aviation and Distillate Fuels

    D2700 Test Method for Motor Octane Number of Spark-Ignition Engine Fuel

    D2717 Test Method for Thermal Conductivity of Liquids

    D2896 Test Method for Base Number of Petroleum Products by Potentiometric Perchloric Acid Titration

    D3339 Test Method for Acid Number of Petroleum Products by Semi-Micro Color Indicator Titration

    D3359 Test Methods for Rating Adhesion by Tape Test

    D3525 Test Method for Gasoline Fuel Dilution in Used Gasoline Engine Oils by Wide-Bore Capillary Gas Chromatography

    D3652 Test Method for Thickness of Pressure-Sensitive Tapes

    D3762 Test Method for Adhesive-Bonded Surface Durability of Aluminum (Wedge Test)

    D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter

    D4057 Practice for Manual Sampling of Petroleum and Petroleum Products

    D4294 Test Method for Sulfur in Petroleum and Petroleum Products by Energy Dispersive X-ray Fluorescence Spectrometry

    D4308 Test Method for Electrical Conductivity of Liquid Hydrocarbons by Precision Meter

    D4809 Test Method for Heat of Combustion of Liquid Hydrocarbon Fuels by Bomb Calorimeter (Precision Method)

    D4865 Guide for Generation and Dissipation of Static Electricity in Petroleum Fuel Systems

    D5188 Test Method for Vapor-Liquid Ratio Temperature Determination of Fuels (Evacuated Chamber and Piston Based Method)

    D5191 Test Method for Vapor Pressure of Petroleum Products and Liquid Fuels (Mini Method)

    D5453 Test Method for Determination of Total Sulfur in Light Hydrocarbons, Spark Ignition Engine Fuel, Diesel Engine Fuel, and Engine Oil by Ultraviolet Fluorescence

    D5762 Test Method for Nitrogen in Liquid Hydrocarbons, Petroleum and Petroleum Products by Boat-Inlet Chemiluminescence

    D5972 Test Method for Freezing Point of Aviation Fuels (Automatic Phase Transition Method)

    D6053 Test Method for Determination of Volatile Organic Compound (VOC) Content of Electrical Insulating Varnishes

    D6227 Specification for Unleaded Aviation Gasoline Containing a Non-hydrocarbon Component

    D6304 Test Method for Determination of Water in Petroleum Products, Lubricating Oils, and Additives by Coulometric Karl Fischer Titration

    D6424 Practice for Octane Rating Naturally Aspirated Spark Ignition Aircraft Engines

    D6469 Guide for Microbial Contamination in Fuels and Fuel Systems

    D6812 Practice for Ground-Based Octane Rating Procedures for Turbocharged/Supercharged Spark Ignition Aircraft Engines

    D7042 Test Method for Dynamic Viscosity and Density of Liquids by Stabinger Viscometer (and the Calculation of Kinematic Viscosity)

    D7096 Test Method for Determination of the Boiling Range Distribution of Gasoline by Wide-Bore Capillary Gas Chromatography

    D7220 Test Method for Sulfur in Automotive, Heating, and Jet Fuels by Monochromatic Energy Dispersive X-ray Fluorescence Spectrometry

    D7547 Specification for Hydrocarbon Unleaded Aviation Gasoline

    D7719 Specification for High Aromatic Content Unleaded Hydrocarbon Aviation Gasoline

    E659 Test Method for Autoignition Temperature of Chemicals

    E1259 Practice for Evaluation of Antimicrobials in Liquid Fuels Boiling Below 390C

    EI Standards

    EI 1529 Aviation fuelling hose and hose assemblies

    EI 1581 Specification and qualification procedures for aviation jet fuel filter/separators

    EI 1583

    EI 1590

    MODUK Standard

    MODUK DEF STAN 80-97

    ICS Code

    ICS Number Code 75.160.20 (Liquid fuels)

    UNSPSC Code

    UNSPSC Code 15101504(Aviation fuel); 15111700(Fuel additives)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D7826-20A

    Citation Format

    ASTM D7826-20a, Standard Guide for Evaluation of New Aviation Gasolines and New Aviation Gasoline Additives, ASTM International, West Conshohocken, PA, 2020,

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