ASTM D3338/D3338M-20a rus PDF

Full title and description

ASTM D3338/D3338M-20a — Standard Test Method for Estimation of Net Heat of Combustion of Aviation Fuels (Russian language edition/translation). This designation refers to the 2020 revision (20a) of Test Method D3338/D3338M and is available in translated editions; a later 2025 revision (D3338/D3338M-25) has been published.

Abstract

This test method provides an empirical correlation for estimating the net heat of combustion (net calorific value) of aviation gasolines and aircraft turbine/jet fuels from routinely measured fuel properties (density/API gravity, aromatic content, distillation/volatility, sulfur content and related parameters). It is intended as a guide when an experimental calorimetric determination is not available or practical and is not a substitute for direct measurement where precision calorimetry is required.

General information

• Status: Withdrawn / superseded at product level by ASTM D3338/D3338M-25 (published 1 Nov 2025); the 20a text remains a historical/referenced edition.
• Publication date: 01 December 2020 (designation D3338/D3338M-20a).
• Publisher: ASTM International.
• ICS / categories: 75.160.20 — Liquid fuels (aviation fuels).
• Edition / version: D3338/D3338M-20a (2020 revision); superseded by D3338/D3338M-25 (2025 revision).
• Number of pages: 5 pages (concise test method).

Scope

The method covers estimation of the net heat of combustion (MJ/kg or Btu/lb) for aviation gasolines and aircraft turbine/jet fuels (Jet A, Jet A‑1, Jet B, JP‑4, JP‑5, JP‑7, JP‑8 and similar kerosines/turbine fuels). The correlation is empirical and calibrated over a defined property range; it is intended for use when experimental determination (e.g., bomb calorimetry methods cited in D240/D4809) is unavailable. Users should be aware of the method’s applicable range and precision limits given in the standard.

Key topics and requirements

• Empirical correlation to estimate net heat of combustion from fuel properties (density/API, aromatic content, volatility/distillation range, sulfur content and related parameters).
• Specified unit systems: SI and inch‑pound treated separately; SI preferred.
• Applicability limits and precision statements — users must verify that the fuel falls within the correlation’s calibrated range before applying the estimate.
• Referenced experimental methods: D240 and D4809 (gross/net heat by calorimetry) for direct measurement; alternative estimation references include D1405 and D4529.
• Not intended to replace direct calorimetric measurement when high accuracy is required; recommended for screening, QC checks, or when a reliable estimate is acceptable.

Typical use and users

Used by fuel testing laboratories, petrochemical and refinery quality control teams, aviation fuel producers, airline fuel quality engineers, regulatory bodies and researchers who need an expedient estimate of net calorific value when calorimetric testing is not available. Useful for initial screening, reporting, fuel specification checks and engineering calculations where an estimated net heat is sufficient.

Related standards

Key related and referenced ASTM standards include Test Methods D240 and D4809 (calorimetric determinations of heat of combustion), D1405 and D4529 (alternative estimation procedures), and other fuel property methods used to supply inputs to the correlation (density, aromatic/sulfur analysis, distillation methods).

Keywords

aviation fuel; net heat of combustion; heat of combustion; calorific value; gross heat; estimation method; fuel properties; density; aromatics; distillation; sulfur; ASTM D3338.

FAQ

Q: What is this standard?

A: ASTM D3338/D3338M-20a is an ASTM test method that provides an empirical procedure to estimate the net heat of combustion of aviation fuels from routine fuel property data. It is a concise estimation method rather than a calorimetric test.

Q: What does it cover?

A: It covers the estimation (calculation) of net calorific value for aviation gasolines and turbine/jet fuels using correlation equations based on density, aromatic content, volatility/distillation characteristics and related parameters; it also explains units and applicability limits.

Q: Who typically uses it?

A: Fuel testing labs, refinery and blending QC personnel, airlines and aerospace fuel engineers, standards committees and researchers who need a rapid, defensible estimate of net heat of combustion when direct calorimetric measurement is not available.

Q: Is it current or superseded?

A: The D3338/D3338M-20a edition (published 01 Dec 2020) is a historical edition; a subsequent revision, ASTM D3338/D3338M-25, was published on 01 Nov 2025 and is the currently active revision. Therefore the 20a text is considered superseded by the 2025 edition. Users should reference the 2025 revision for the most current requirements.

Q: Is it part of a series?

A: Yes — D3338/D3338M belongs to the family of ASTM fuel test methods and estimation procedures and references several companion standards (for calorimetric measurement and alternate estimation methods). The designation includes both SI and inch‑pound (M) expressions and is periodically revised (e.g., 2008, 2020a, 2025).

Q: What are the key keywords?

A: aviation fuel, net heat of combustion, calorific value, estimate, heat of combustion, density, aromatics, distillation, fuel testing, ASTM D3338.