ASTM D5972-16 rus PDF

Full title and description

Standard Test Method for Freezing Point of Aviation Fuels (Automatic Phase Transition Method) — ASTM D5972-16. This is the 2016 edition of the automated (thermoelectric/Peltier-based) freezing‑point test method for aviation turbine fuels; Russian-language translations of the ASTM D5972-16 text are commercially available as third‑party rendered PDFs.

Abstract

ASTM D5972-16 defines an automatic phase-transition procedure to determine the freezing point of aviation turbine fuels — the temperature below which solid hydrocarbon (wax) crystals form and remain in the fuel under the specified test conditions. The method is intended to improve precision and reduce operator judgment versus older manual methods, and reports results to the nearest 0.1 °C within its demonstrated range. The procedure uses a thermoelectric (Peltier) cooling device and automated detection of the last crystal disappearance on warming.

General information

• Status: 2016 edition (D5972-16) — published and in circulation; users should note a later D5972 revision (D5972-25) was published by ASTM and may supersede the 2016 edition.
• Publication date: Approved/published June 1, 2016 (D5972-16).
• Publisher: ASTM International (American Society for Testing and Materials).
• ICS / categories: 49.025.99 (Other materials); 75.160.20 (Liquid fuels / aviation fuels).
• Edition / version: D5972-16 (2016 edition).
• Number of pages: 6 pages (typical published PDF).

Scope

This test method covers determination of the temperature below which solid hydrocarbon crystals form in aviation turbine fuels (Jet A, Jet A‑1, Jet B, etc.) using an automatic phase‑transition instrument. The method is designed to cover a nominal temperature range of −80 °C to 20 °C, though interlaboratory data demonstrating precision have been reported for typical jet‑fuel freezing points (for example roughly −42 °C to −60 °C in earlier studies). The standard clarifies that when a specification requires a specific referee method (for example D2386), that specified method must be used.

Key topics and requirements

• Definition of freezing point for aviation fuels (temperature at which last hydrocarbon crystals disappear on warming) and its operational significance for aircraft fuel systems.
• Automatic phase‑transition measurement using a thermoelectric (Peltier) cooling/heating device and optical/viscosity detection of phase change.
• Applicable temperature range (designed −80 °C to 20 °C) and practical demonstrated range from interlaboratory studies.
• Precision and reporting: results to nearest 0.1 °C with precision statements derived from interlaboratory studies; comparison and stated equivalence to Test Method D2386.
• Apparatus, calibration, sample handling, and safety/health notes required for reliable measurements.

Typical use and users

Used by fuel testing laboratories, refinery quality groups, aviation fuel suppliers, airline engineering and fuel‑quality teams, regulatory and military laboratories where freezing point of jet fuels is a controlled property. Typical activities include specification compliance testing (e.g., requirements referenced in aviation fuel specifications), blending control, and acceptance testing during fuel manufacture and distribution.

Related standards

Commonly referenced/related standards and specifications include: Test Method D2386 (freezing‑point manual/referee method), ASTM D1655 (Specification for Aviation Turbine Fuels, which lists acceptable test methods for freeze point), and other D02 subcommittee methods and IP (Institute of Petroleum) equivalents (for example IP 16/IP 435 or D7153/D7154 alternatives used in some specifications). Users should consult the applicable fuel specification (e.g., D1655) for which test method is required or preferred.

Keywords

ASTM D5972-16; freezing point; aviation turbine fuels; automatic phase transition; Peltier; thermoelectric; wax crystals; Jet A; Jet A‑1; fuel testing; D2386; D1655.

FAQ

Q: What is this standard?

A: ASTM D5972-16 is a test method that specifies an automatic phase‑transition procedure (using thermoelectric cooling) to determine the freezing point of aviation turbine fuels.

Q: What does it cover?

A: It covers the determination of the temperature below which solid hydrocarbon crystals form in aviation turbine fuels, the required apparatus and procedure for automatic detection, calibration and reporting, and associated precision and safety notes. The method is intended to reduce operator judgment versus older manual methods.

Q: Who typically uses it?

A: Fuel testing laboratories, refiners, fuel suppliers, airlines, and military/regulatory labs that perform quality control and acceptance testing on aviation turbine fuels.

Q: Is it current or superseded?

A: D5972-16 is the 2016 edition. Users should be aware that ASTM later published a newer revision (D5972-25); therefore D5972-16 may be superseded for current practice and specifications should be checked to determine which edition is required. Always confirm with ASTM or the applicable purchasing/specification document which revision to use.

Q: Is it part of a series?

A: D5972 is part of the D02 committee’s suite of petroleum and aviation fuel test methods; it is referenced alongside other freezing‑point and fuel specification methods (for example D2386, D7153/D7154 and the ASTM D1655 fuel specification).

Q: What are the key keywords?

A: Freezing point, aviation turbine fuels, automatic phase transition, Peltier, thermoelectric, wax crystals, Jet A, D2386, D1655.