ASTM D613-24
(Test Method)Standard Test Method for Cetane Number of Diesel Fuel Oil
Standard Test Method for Cetane Number of Diesel Fuel Oil
SIGNIFICANCE AND USE
5.1 The cetane number provides a measure of the ignition characteristics of diesel fuel oil in compression ignition engines.
5.2 This test method is used by engine manufacturers, petroleum refiners and marketers, and in commerce as a primary specification measurement related to matching of fuels and engines.
5.3 Cetane number is determined at constant speed in a precombustion chamber type compression ignition test engine. The relationship of test engine performance to full scale, variable speed, variable load engines is not completely understood.
5.4 This test method may be used for unconventional fuels such as synthetics, vegetable oils, and the like. However, the relationship to the performance of such materials in full scale engines is not completely understood.
SCOPE
1.1 This test method covers the determination of the rating of diesel fuel oil in terms of an arbitrary scale of cetane numbers using a standard single cylinder, four-stroke cycle, variable compression ratio, indirect injected diesel engine.
1.2 The cetane number scale covers the range from zero (0) to 100, but typical testing is in the range of 30 to 65 cetane number.
1.3 The values for operating conditions are stated in SI units and are to be regarded as the standard. The values given in parentheses are the historical inch-pound units for information only. In addition, the engine measurements continue to be in inch-pound units because of the extensive and expensive tooling that has been created for these units.
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For more specific warning statements, see Annex A1.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
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Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D613 − 24
Standard Test Method for
1
Cetane Number of Diesel Fuel Oil
This standard is issued under the fixed designation D613; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* D2500 Test Method for Cloud Point of Petroleum Products
and Liquid Fuels
1.1 This test method covers the determination of the rating
D3703 Test Method for Hydroperoxide Number of Aviation
of diesel fuel oil in terms of an arbitrary scale of cetane
Turbine Fuels, Gasoline and Diesel Fuels
numbers using a standard single cylinder, four-stroke cycle,
D4057 Practice for Manual Sampling of Petroleum and
variable compression ratio, indirect injected diesel engine.
Petroleum Products
1.2 The cetane number scale covers the range from zero (0)
D4175 Terminology Relating to Petroleum Products, Liquid
to 100, but typical testing is in the range of 30 to 65 cetane
Fuels, and Lubricants
number.
D4177 Practice for Automatic Sampling of Petroleum and
Petroleum Products
1.3 The values for operating conditions are stated in SI units
and are to be regarded as the standard. The values given in D6299 Practice for Applying Statistical Quality Assurance
and Control Charting Techniques to Evaluate Analytical
parentheses are the historical inch-pound units for information
only. In addition, the engine measurements continue to be in Measurement System Performance
D6300 Practice for Determination of Precision and Bias
inch-pound units because of the extensive and expensive
tooling that has been created for these units. Data for Use in Test Methods for Petroleum Products,
Liquid Fuels, and Lubricants
1.4 This standard does not purport to address all of the
D6708 Practice for Statistical Assessment and Improvement
safety concerns, if any, associated with its use. It is the
of Expected Agreement Between Two Test Methods that
responsibility of the user of this standard to establish appro-
Purport to Measure the Same Property of a Material
priate safety, health, and environmental practices and deter-
E456 Terminology Relating to Quality and Statistics
mine the applicability of regulatory limitations prior to use.
E542 Practice for Gravimetric Calibration of Laboratory
For more specific warning statements, see Annex A1.
Volumetric Instruments
1.5 This international standard was developed in accor-
E832 Specification for Laboratory Filter Papers
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
3. Terminology
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
3.1 Definitions:
Barriers to Trade (TBT) Committee.
3.1.1 accepted reference value (ARV), n—a value that serves
as an agreed-upon reference for comparison, and which is
2. Referenced Documents
derived as: (1) a theoretical or established value, based on
2
scientific principles, or (2) an assigned or certified value, based
2.1 ASTM Standards:
on experimental work of some national or international
D975 Specification for Diesel Fuel
organization, or (3) a consensus or certified value, based on
D1193 Specification for Reagent Water
collaborative experimental work under the auspices of a
scientific or engineering group. E456
3.1.1.1 Discussion—In the context of this test method,
1
This test method is under the jurisdiction of ASTM Committee D02 on
accepted reference value is understood to apply to the cetane
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.01 on Combustion Characteristics.
number of specific reference materials determined empirically
Current edition approved Feb. 1, 2024. Published February 2024. Originally
under reproducibility conditions by the National Exchange
approved in 1941. Last previous edition approved in 2023 as D613 – 23. DOI:
Group or another recognized exchange testing organization.
10.1520/D0613-24.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3.1.2 cetane number (CN), n—a measure of the ignition
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
performance of a diesel fuel oil obtained by comparing it to
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. reference fuels in a standardized engine test. D4175
*A Summary of Changes section app
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D613 − 23 D613 − 24
Standard Test Method for
1
Cetane Number of Diesel Fuel Oil
This standard is issued under the fixed designation D613; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This test method covers the determination of the rating of diesel fuel oil in terms of an arbitrary scale of cetane numbers using
a standard single cylinder, four-stroke cycle, variable compression ratio, indirect injected diesel engine.
1.2 The cetane number scale covers the range from zero (0) to 100, but typical testing is in the range of 30 to 65 cetane number.
1.3 The values for operating conditions are stated in SI units and are to be regarded as the standard. The values given in
parentheses are the historical inch-pound units for information only. In addition, the engine measurements continue to be in
inch-pound units because of the extensive and expensive tooling that has been created for these units.
1.4 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use. For more specific warning statements, see Annex A1.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D975 Specification for Diesel Fuel
D1193 Specification for Reagent Water
D2500 Test Method for Cloud Point of Petroleum Products and Liquid Fuels
D3703 Test Method for Hydroperoxide Number of Aviation Turbine Fuels, Gasoline and Diesel Fuels
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4175 Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measure-
ment System Performance
D6300 Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products, Liquid Fuels, and
Lubricants
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.01 on Combustion Characteristics.
Current edition approved March 1, 2023Feb. 1, 2024. Published March 2023February 2024. Originally approved in 1941. Last previous edition approved in 20182023
ε1
as D613D613 – 23. – 18a . DOI: 10.1520/D0613-23.10.1520/D0613-24.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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D613 − 24
D6708 Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport
to Measure the Same Property of a Material
E456 Terminology Relating to Quality and Statistics
E542 Practice for Gravimetric Calibration of Laboratory Volumetric Instruments
E832 Specification for Laboratory Filter Papers
3. Terminology
3.1 Definitions:
3.1.1 accepted reference value (ARV), n—a value that serves as an agreed-upon reference for comparison, and which is derived
as: (1) a theoretical or established value, based on scientific principles, or (2) an assigned or certified value, based on experimental
work of some national or international organization, or (3) a consensus or certified value, based on collaborative experimental work
under the auspices of a scientific or engineering group. E456
3.1.1.1 Discussion—
In the context of this test method, accep
...
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