ASTM D240 is the ASTM standard for measuring the heat of combustion of liquid hydrocarbon fuels by bomb calorimeter. It provides a consistent test framework for determining the energy released by a fuel under controlled laboratory conditions, which is important for product comparison, quality control, and technical evaluation. For buyers and laboratory users, this standard supports more reliable fuel characterization and helps align testing practices with a recognized ASTM standard.

What is ASTM D240?

ASTM D240, titled Standard Test Method for Heat of Combustion of Liquid Hydrocarbon Fuels by Bomb Calorimeter, defines a laboratory test method for measuring the combustion heat of liquid hydrocarbon fuels. The standard is centered on calorimetric testing, where a fuel sample is burned under controlled conditions to determine its energy content. This makes ASTM D240 a practical reference for laboratories and technical teams that need a standardized way to evaluate fuel performance and compare results consistently.

Where is ASTM D240 used?

This standard is commonly used in laboratories, fuel testing facilities, and quality assurance workflows that handle liquid hydrocarbon fuels. It is relevant wherever heat of combustion data is needed for specification review, product evaluation, or routine testing. ASTM D240 may also support procurement and compliance activities when consistent energy-content measurements are required for fuel-related materials and test reports.

Why is ASTM D240 important?

ASTM D240 matters because it helps produce repeatable, comparable combustion heat data using an established test method. That consistency is valuable for quality control, product comparison, and verifying that fuels are being assessed under the same technical approach. For organizations that rely on laboratory results, ASTM D240 can reduce ambiguity in testing and support more confident engineering and purchasing decisions.

• Heat of combustion measurement
• Bomb calorimeter testing method
• Liquid hydrocarbon fuel evaluation
• Quality control and comparison
• Standardized laboratory reporting