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Significance and Use
5.1 The freezing point of an aviation fuel is an index of the lowest temperature of its utility for certain applications. Solid hydrocarbon crystals can restrict the flow of fuel in the fuel system of the aircraft. The temperature of the fuel in the aircraft tank normally decreases during flight depending on aircraft speed, altitude, and flight duration. The freezing point of the fuel must always be lower than the minimum operational fuel temperature.
5.2 Petroleum blending operations require precise measurement of the freezing point.
5.3 This test method expresses results with a resolution of 0.1 °C.
5.4 This test method eliminates most of the operator time and judgment required by Test Method .
5.5 When the specification requires the use of Test Method , do not substitute this test method or any other method.
1.1 This test method covers the determination of the temperature below which solid hydrocarbon crystals may form in aviation turbine fuels.
Note 1: This test method describes an alternative procedure and automatic apparatus which closely mimics the apparatus and procedure described in Test Method .
1.2 The measuring range of the apparatus is from –70 °C to 0 °C, however the precision statements were derived only from samples with freezing point temperatures from –60 °C to –42 °C.
Note 2: Typical aviation fuel has freezing point temperatures in the –60 °C to –40 °C range.
1.3 Some results from this test method (14 % of samples included in the 2003 round robin) incorrectly identified sample contamination where no contaminants were present in the samples (see research report for further information).
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section .
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D2386 Test Method for Freezing Point of Aviation Fuels
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
D5901 Test Method for Freezing Point of Aviation Fuels (Automated Optical Method)
D6708 Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
E1 Specification for ASTM Liquid-in-Glass Thermometers
Energy Institute StandardIP 16 Determination Freezing Point of Aviation Fuels
ICS Number Code 75.160.20 (Liquid fuels)
UNSPSC Code 15101504(Aviation fuel)
ASTM D7154-15, Standard Test Method for Freezing Point of Aviation Fuels (Automatic Fiber Optical Method), ASTM International, West Conshohocken, PA, 2015, www.astm.orgBack to Top