ASTM D6227-24 - Standard Specification for Unleaded Aviation Gasoline Containing a Non-hydrocarbon Component

Standard No.: ASTM D6227-24
Release Date: 2024
Published By: American Society for Testing and Materials (ASTM) US / ASTM
Status: Be replaced
Replace By: ASTM D6227-24a
Latest: ASTM D6227-24a

Introduction

Standard Overview and Technical Background

ASTM D6227-24 defines two grades of unleaded aviation gasoline (UL82 and UL87) designed for use in manufacturer-certified reciprocating spark-ignition aircraft engines. The latest revision of this standard (published in March 2024) maintains the core requirements of the 2018 edition and primarily updates terminology.

Comparison of key indicators of fuel grades

Parameters

UL82

UL87

Test method

Motor octane number (minimum)

82.0

87.0

D2700

Research octane number (minimum)

95.0

D2699

Distillation range (10% evaporation temperature ℃)

Basic Components

Permitted: Crude oil refined hydrocarbons, natural gas condensate, certain fatty ethers (MTBE must comply with D5983), synthetic hydrocarbons, and aromatic hydrocarbons. Intentional addition of methanol/ethanol (except isopropyl alcohol) is prohibited.

Additive Specifications

Antioxidant: 12 phenolic compounds, total amount ≤12mg/L
Metal Passivator: N,N'-disalicylidene-1,2-propylenediamine ≤3.0mg/L
Anti-icing Agent: Diethylene glycol monomethyl ether (0.10-0.15% volume)

Key Test Methods

Test Items	Standard Method
Copper Strip Corrosion	D130 (50℃×3h)
Sulfur Content	D5453 (UV Fluorescence Method)
Potential Colloidal Matter	D873 (5-hour Accelerated Oxidation)

Implementation Recommendations

Key Points in Production Control

Component Traceability: Only raw material components certified by the refinery are allowed
Lead and Phosphorus Control: Unintentional introduction of lead ≤0.013g/L
Oxygen Content Correction: Net Calorific Value is calculated using Formula X2.7.2

Airport Operating Specifications

When the ambient temperature is >29°C, the vapor pressure ≤93kPa must be indicated in the delivery documents
Refer to Guide D6469 for microbiological control

Technology Evolution Analysis

This standard originated from its first release in 1998. The main changes in the 2024 version are:

Clarified reference to the D4175 terminology standard
Maintained the UL87 research method octane number requirement of 95.0 (based on RR:D02-1709 research)
Continued to limit ethers such as MTBE/TAME/ETBE/DIPE

ASTM D6227-24 Referenced Document

ASTM D1266 Standard Test Method for Sulfur in Petroleum Products (Lamp Method)
ASTM D1298 Standard Test Method for Density, Relative Density (Specific Gravity), or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method
ASTM D130 Standard Test Method for Detection of Copper Corrosion from Petroleum Products by the Copper Strip Tarnish Test
ASTM D2386 Standard Test Method for Freezing Point of Aviation Fuels
ASTM D2392 Standard Test Method for Color Of Dyed Aviation Gasolines
ASTM D2622 Standard Test Method for Sulfur in Petroleum Products by Wavelength Dispersive X-ray Fluorescence Spectrometry
ASTM D2699 Standard Test Method for Research Octane Number of Spark-Ignition Engine Fuel
ASTM D2700 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
ASTM D3120 Standard Test Method for Trace Quantities of Sulfur in Light Liquid Petroleum Hydrocarbons by Oxidative Microcoulometry
ASTM D3231 Standard Test Method for Phosphorus in Gasoline
ASTM D3237 Standard Test Method for Lead In Gasoline By Atomic Absorption Spectroscopy
ASTM D357 Test method for engine detonation characteristics of gasoline (octane number not exceeding 100)
ASTM D381 Standard Test Method for Existent Gum in Fuels by Jet Evaporation
ASTM D4052 Standard Test Method for Density and Relative Density of Liquids by Digital Density Meter
ASTM D4057 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
ASTM D4171 Standard Specification for Fuel System Icing Inhibitors
ASTM D4175 Standard Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants*， 2024-07-01 Update
ASTM D4294 Standard Test Method for Sulfur in Petroleum Products by Energy-Dispersive X-Ray Fluorescence Spectroscopy
ASTM D4529 Standard Test Method for Estimation of Net Heat of Combustion of Aviation Fuels
ASTM D4809 Standard Test Method for Heat of Combustion of Liquid Hydrocarbon Fuels by Bomb Calorimeter (Precision Method)
ASTM D4815 Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl Alcohol and C₁ to C₄ Alcohols in Gasoline by Gas Chromatography
ASTM D4953 Standard Test Method for Vapor Pressure of Gasoline and Gasoline-Oxygenate Blends (Dry Method)
ASTM D5059 Standard Test Methods for Lead in Gasoline by X-Ray Spectroscopy
ASTM D5191 Standard Test Method for Vapor Pressure of Petroleum Products (Mini Method)
ASTM D5453 Standard Test Method for Determination of Total Sulfur in Light Hydrocarbons, Spark Ignition Engine Fuel, Diesel Engine Fuel, and Engine Oil by Ultraviolet Fluorescence*， 2025-07-01 Update
ASTM D5482 Standard Test Method for Vapor Pressure of Petroleum Products (Mini Method-Atmospheric)
ASTM D5599 Standard Test Method for Determination of Oxygenates in Gasoline by Gas Chromatography and Oxygen Selective Flame Ionization Detection
ASTM D5845 Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, Methanol, Ethanol and tert-Butanol in Gasoline by Infrared Spectroscopy
ASTM D5983 Standard Specification for Methyl Tertiary-Butyl Ether (MTBE) for Downstream Blending for Use in Automotive Spark-Ignition Engine Fuel
ASTM D6469 Standard Guide for Microbial Contamination in Fuels and Fuel Systems
ASTM D7220 Standard Test Method for Sulfur in Automotive, Heating, and Jet Fuels by Monochromatic Energy Dispersive X-ray Fluorescence Spectrometry
ASTM D86 Standard Test Method for Distillation of Petroleum Products
ASTM D873 Standard Test Method for Oxidation Stability of Aviation Fuels (Potential Residue Method)
ASTM D909 Standard Test Method for Supercharge Rating of Spark-Ignition Aviation Gasoline
ASTM D910 Standard Specification for Aviation Gasolines
ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

ASTM D6227-24 history

2024 ASTM D6227-24a Standard Specification for Unleaded Aviation Gasoline Containing a Non-hydrocarbon Component
2024 ASTM D6227-24 Standard Specification for Unleaded Aviation Gasoline Containing a Non-hydrocarbon Component
2023 ASTM D6227-18(2023) Standard Specification for Unleaded Aviation Gasoline Containing a Non-hydrocarbon Component
2018 ASTM D6227-18 Standard Specification for Unleaded Aviation Gasoline Containing a Non-hydrocarbon Component
2017 ASTM D6227-17 Standard Specification for Unleaded Aviation Gasoline Containing a Non-hydrocarbon Component
2014 ASTM D6227-14 Standard Specification for Unleaded Aviation Gasoline Containing a Non-hydrocarbon Component
2012 ASTM D6227-12 Standard Specification for Unleaded Aviation Gasoline Containing a Non-hydrocarbon Component
2010 ASTM D6227-10 Standard Specification for Grades UL82 and UL87 Unleaded Aviation Gasoline
2004 ASTM D6227-04a Standard Specification for Grade 82 Unleaded Aviation Gasoline
2004 ASTM D6227-04 Standard Specification for Grade 82 Unleaded Aviation Gasoline
2000 ASTM D6227-00 Standard Specification for Grade 82 Unleaded Aviation Gasoline
1999 ASTM D6227-99 Standard Specification for Grade 82 Unleaded Aviation Gasoline

Standard and Specification

ASTM D6227-24Standard Specification for Unleaded Aviation Gasoline Containing a Non-hydrocarbon Component