ASTM D7548-22 PDF

Full title and description

ASTM D7548-22 — Standard Test Method for Determination of Accelerated Iron Corrosion in Petroleum Products. This test method specifies an accelerated laboratory and field procedure to evaluate the tendency of petroleum fuels and fuel blend components (including gasoline, ethanol-blended gasoline such as E10, diesel fuels, biodiesel blends, light cycle oil and aviation turbine fuel) to cause iron corrosion in the presence of water under controlled conditions.

Abstract

This standard describes preparation of corrosion test rods, reagents, test jars, and the accelerated exposure procedure used to produce and rate iron corrosion (rust) caused by contact with small volumes of fuel and water. It includes specimen preparation (grinding/polishing), required solvents/reagents, test apparatus, exposure conditions and the corrosion-rating system used to evaluate results. The procedure is intended for both laboratory and field evaluation of liquid fuels and certain blend components.

General information

• Status: Active standard.
• Publication date: January 5, 2022.
• Publisher: ASTM International.
• ICS / categories: 75.160.20 (Liquid fuels).
• Edition / version: D7548-22 (current 2022 revision of the D7548 series).
• Number of pages: 11 pages.

(Bibliographic and edition details based on the ASTM designation and published bibliographic records.)

Scope

ASTM D7548-22 covers an accelerated method to determine the corrosion of iron in the presence of water when exposed to petroleum products and selected blend components. Typical sample types include gasoline (and E10), gasoline-blend components (except butane), diesel and biodiesel blends (B5 and B6–B20, with some grade exceptions), light cycle oil, and aviation turbine fuel. The method is intended to provide comparative information about the corrosivity of samples under defined accelerated conditions rather than to predict long-term field corrosion precisely.

Key topics and requirements

• Preparation and polishing of corrosion test rods (material, surface finish, mounting and grinding speeds).
• Required reagents and solvents (for example reagent water, isooctane, acetone, hydrochloric acid) and safety considerations.
• Design and use of test jars and accessories, including suggested sources for specialized components where noted by the committee.
• Controlled exposure procedure: sample volume, water presence, temperature/time parameters for accelerated corrosion.
• Corrosion-rating scheme and visual/magnified examination procedures for rust scoring.
• Reportable results, repeatability considerations and recommended documentation for laboratory and field runs.

These topics reflect the method’s emphasis on reproducible specimen preparation and controlled exposure to ensure comparative ranking of fuels and blend components.

Typical use and users

Engineers, quality-control laboratories, fuel producers, additive manufacturers, fuel distribution and storage operators, test laboratories, and regulatory or certification bodies use ASTM D7548-22 to screen fuels and components for corrosivity toward iron in the presence of water. The method is commonly used for comparative testing during formulation, acceptance testing, and troubleshooting corrosion complaints related to storage or handling of fuels.

Related standards

ASTM D7548-22 is part of a suite of petroleum fuel test methods addressing fuel properties and stability. It updates and supersedes earlier versions in the D7548 series (for example the 2016/2016a edition noted in committee records) and is often used alongside other fuel test methods for water separation, oxidation stability, and contaminant analysis. Laboratories should consult the ASTM index for complementary standards (e.g., methods covering reagent quality, fuel composition, and related corrosion or material-compatibility procedures).

Keywords

iron corrosion, accelerated corrosion test, petroleum products, gasoline, E10, diesel fuel, biodiesel, aviation turbine fuel, corrosion test rod, corrosion rating, ASTM D7548-22, liquid fuels.

FAQ

Q: What is this standard?

A: ASTM D7548-22 is a standardized test method that specifies an accelerated laboratory and field procedure to assess iron corrosion caused by petroleum products in the presence of water.

Q: What does it cover?

A: It covers specimen preparation, required reagents and apparatus, exposure procedures, and a corrosion-rating system to evaluate rust formation on prepared iron test rods after exposure to fuels and blend components. It is intended for comparative and screening purposes.

Q: Who typically uses it?

A: Fuel producers, QC and testing laboratories, additive manufacturers, storage and distribution operators, and investigators addressing corrosion-related issues in fuel systems.

Q: Is it current or superseded?

A: The D7548-22 edition (published January 5, 2022) is the current active version of the standard. It represents a 2022 revision in the D7548 series and replaces earlier editions. Users should confirm with ASTM for any amendments or newer revisions after 2022.

Q: Is it part of a series?

A: Yes — D7548-22 is part of the D7548 series of ASTM test methods for accelerated iron corrosion in fuels; it is used together with other ASTM petroleum and fuel test methods addressing stability, water tolerance, and material compatibility.

Q: What are the key keywords?

A: iron corrosion, accelerated test, petroleum fuels, gasoline, diesel, biodiesel, E10, corrosion rating, test rod, ASTM D7548-22.