ASTM D293/D293M-18

Standard Test Method for the Sieve Analysis of Coke

SIGNIFICANCE AND USE
3.1 This test method determines the size distribution of coke for conformance to specifications of percentages retained on designated screen sizes.
SCOPE
1.1 This test method describes the separation of a coke sample into defined size fractions and expressing said fractions as a mass [weight] percent of the gross sample.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
1.3 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.  
1.4 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

• Status: Published
• Publication Date: 31-Aug-2018
• ICS: 75.160.10 - Solid fuels
• Technical Committee: D05 - Coal and Coke
• Drafting Committee: D05.15 - Metallurgical Properties of Coal and Coke

Relations

• Replaces: ASTM D293-93(2010) - Standard Test Method for the Sieve Analysis of Coke
• Effective Date: 01-Sep-2018
• Refers: ASTM E11-13 - Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves
• Effective Date: 01-Oct-2013
• Refers: ASTM E323-11 - Standard Specification for Perforated-Plate Sieves for Testing Purposes
• Effective Date: 15-Nov-2011
• Refers: ASTM D346/D346M-11 - Standard Practice for Collection and Preparation of Coke Samples for Laboratory Analysis
• Effective Date: 01-Oct-2011
• Refers: ASTM E323-09 - Standard Specification for Perforated-Plate Sieves for Testing Purposes
• Effective Date: 01-Nov-2009
• Refers: ASTM E11-09e1 - Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves
• Effective Date: 01-May-2009
• Refers: ASTM E323-80(2004) - Standard Specification for Perforated-Plate Sieves for Testing Purposes
• Effective Date: 01-Oct-2004
• Refers: ASTM E11-04 - Standard Specification for Wire Cloth and Sieves for Testing Purposes
• Effective Date: 01-May-2004
• Refers: ASTM E11-01 - Standard Specification for Wire Cloth and Sieves for Testing Purposes
• Effective Date: 10-May-2001
• Refers: ASTM E11-95 - Standard Specification for Wire Cloth and Sieves for Testing Purposes
• Effective Date: 10-May-2001
• Refers: ASTM E323-80(2001) - Standard Specification for Perforated-Plate Sieves for Testing Purposes
• Effective Date: 01-Jan-2001
• Refers: ASTM E323-80(1996)e1 - Standard Specification for Perforated-Plate Sieves for Testing Purposes
• Effective Date: 01-Jan-2001
• Refers: ASTM D4621-99 - Standard Guide for Quality Management in an Organization That Samples or Tests Coal and Coke
• Effective Date: 10-Dec-1999
• Referred By: ASTM D346/D346M-11(2019)e1 - Standard Practice for Collection and Preparation of Coke Samples for Laboratory Analysis
• Effective Date: 01-Sep-2018

Overview

ASTM D293/D293M-18: Standard Test Method for the Sieve Analysis of Coke, establishes a recognized procedure for determining the size distribution of coke samples. This standard, published by ASTM International, sets forth a reliable, repeatable methodology for separating a coke sample into defined size fractions and expressing each fraction as a mass (weight) percentage of the gross sample. Accurate size distribution data is critical for quality control, product specification, and process efficiency in industrial settings where coke is used, especially in metallurgical and energy production industries.

Key Topics

• Coke Sieve Analysis: Outlines a step-by-step process for sieving a coke sample through a series of test sieves to sort particles by size.
• Size Fraction Measurement: Details the calculation of the mass percentage for each size fraction, critical for verifying coke quality and compliance with technical requirements.
• Equipment Specifications:
  • Square-hole sieves compliant with ASTM E11.
  • Use of proper sieve sizes and frames based on coke particle size.
  • Required weighing balance sensitivity and platform specifications.
• Sample Preparation: Specifies that test samples must be collected and prepared in accordance with ASTM D346/D346M to ensure representative results.
• Reporting and Accuracy: Requires recording the weight of material retained on each sieve to the nearest 0.05 kg (or 0.1 lb). Results must be reported as a mass percentage of the gross sample.
• Units of Measurement: Clarifies that SI and inch-pound units are both standard but are not interchangeable within a single test.

Applications

The ASTM D293/D293M-18 standard is widely applied in the coal and coke industries, including:

• Metallurgical Processes: Determines suitability of coke for use in blast furnaces, foundries, and other metallurgical applications by confirming particle size distribution against specifications.
• Quality Control: Supports producers and users in verifying conformance to product specifications, optimizing performance, and minimizing operational issues caused by undesired coke size fractions.
• Purchasing & Sales Agreements: Used as an objective basis for commercial transactions between coke producers and consumers, ensuring both parties have a common standard for evaluating product quality.
• Research & Development: Assists laboratories and technical teams in assessing the effects of process changes or raw material variations on coke granulometry.
• Compliance and Auditing: Facilitates regulatory and internal audits by providing a traceable method for coke size analysis that meets international best practices.

Related Standards

When implementing or referencing ASTM D293/D293M-18, consider its relation to the following standards and guides:

• ASTM D346/D346M - Practice for Collection and Preparation of Coke Samples for Laboratory Analysis, which ensures that coke samples used for sieve analysis are truly representative.
• ASTM E11 - Specification for Woven Wire Test Sieve Cloth and Test Sieves, which defines technical requirements for the sieves used in testing.
• ASTM E323 - Specification for Perforated-Plate Sieves for Testing Purposes, which may also apply for certain sieve sizes.
• (Historical) ASTM D4621 - Guide for Quality Management in an Organization That Samples or Tests Coal and Coke (withdrawn).

Practical Value

Adopting ASTM D293/D293M-18 ensures standardized, reproducible results for coke size distribution measurement, critical for:

• Meeting product quality requirements
• Securing customer confidence
• Enhancing industrial process efficiency
• Maintaining compliance with contractual and regulatory standards

Using this standard increases consistency, reduces disputes, and supports operational excellence throughout the coke supply chain. For official documentation and detailed procedures, always use the most current version as published by ASTM International.

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: D293/D293M − 18
Standard Test Method for the
Sieve Analysis of Coke
This standard is issued under the fixed designation D293/D293M; 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.
1. Scope 3. Significance and Use
1.1 This test method describes the separation of a coke 3.1 Thistestmethoddeterminesthesizedistributionofcoke
sample into defined size fractions and expressing said fractions for conformance to specifications of percentages retained on
as a mass [weight] percent of the gross sample. designated screen sizes.
1.2 The values stated in either SI units or inch-pound units
4. Apparatus
are to be regarded separately as standard. The values stated in
4.1 Sieves—Use square-hole sieves conforming to Specifi-
each system may not be exact equivalents; therefore, each
cation E11. Where sieves larger than 100 mm [4 in.] are
system shall be used independently of the other. Combining
required, the specifications for same shall be by mutual
values from the two systems may result in nonconformance
agreement between interested parties. Permissible variations in
with the standard.
sieve openings and spacings shall be in accordance with
1.3 This standard does not purport to address all of the
Specification E11.
safety concerns, if any, associated with its use. It is the
4.1.1 For complete characterization of the size range of a
responsibility of the user of this standard to establish appro-
coke sample, the number and size of the selected sieves should
priate safety, health, and environmental practices and deter-
be such that no more than 25 % of the gross sample mass or
mine the applicability of regulatory limitations prior to use.
weight will be retained on any given sieve.
1.4 This international standard was developed in accor-
4.1.2 For coke 38.1 mm [1 ⁄2 in.] and larger in size, sieves
dance with internationally recognized principles on standard-
ofheavydouble-crimpedwireandsquareorrectangularframes
ization established in the Decision on Principles for the
2 2 2 2
with 0.56 m to 0.84 m [6 ft to9ft ] of sieve area are
Development of International Standards, Guides and Recom-
satisfactory. For coke smaller than 38.1 mm [1 ⁄2 in.] in size,
mendations issued by the World Trade Organization Technical
sieves of double-crimped wire and square or circular frames
Barriers to Trade (TBT) Committee.
2 2 2 2
with 0.19 m to 0.37 m [2 ft to4ft ] of sieve area are usually
more convenient.
2. Referenced Documents
4.2 Weighing Balance, preferably of the platform type,
2.1 ASTM Standards:
having a sensitivity of 0.025 kg [0.05 lb] or better, at rated
D346/D346M Practice for Collection and Preparation of
capacity and with graduations such that 0.05 kg [0.1 lb] can be
Coke Samples for Laboratory Analysis
read without interpolation.
D4621 Guide for Quality Management in an Organization
That Samples or Tests Coal and Coke (Withdrawn 2010)
5. Test Sample
E11 Specification for Woven Wire Test Sieve Cloth and Test
Sieves
5.1 The test sample shall be taken in accordance with
E323 Specification for Perforated-Plate Sieves for Testing Practice D346/D346M.
Purposes
6. Procedure
6.1 Starting with the sieve having the largest opening, sieve
This test method is under the jurisdiction of ASTM Committee D05 on Coal
the sample of coke in quantities small enough to prevent
and Coke and is the direct responsibility of Subcommittee D05.15 on Metallurgical
Properties of Coal and Coke.
plugging and clogging of the sieve.
Current edition approved Sept. 1, 2018. Published September 2018. Originally
6.1.1 Hand-fit each piece of coke retained on the 38.1 mm
approved in 1928. Last previous edition approved in 2010 as D293 – 93 (2010).
[1 ⁄2 in.] or larger sieve. A piece is considered undersize if, in
DOI: 10.1520/D0293_D0293M-18.
some position and without forcing, it passes the sieve opening.
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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: D293 − 93 (Reapproved 2010) D293/D293M − 18
Standard Test Method for the
Sieve Analysis of Coke
This standard is issued under the fixed designation D293;D293/D293M; 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.
1. Scope
1.1 This test method describes the separation of a coke sample into defined size fractions and expressing said fractions as a
weight mass [weight] percent of the gross sample.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as the standard. Inch-pound units shall
be accepted on an equivalent basis. standard. The values stated in each system may not be exact equivalents; therefore, each system
shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.
1.3 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 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
2.1 ASTM Standards:
D346D346/D346M Practice for Collection and Preparation of Coke Samples for Laboratory Analysis
D4621 Guide for Quality Management in an Organization That Samples or Tests Coal and Coke (Withdrawn 2010)
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
E323 Specification for Perforated-Plate Sieves for Testing Purposes
3. Significance and Use
3.1 This test method determines the size distribution of coke for conformance to specifications of percentages retained on
designated screen sizes.
4. Apparatus
4.1 Sieves—Use square-hole sieves conforming to Specification E11. Where sieves larger than 100 mm (4 in.)[4 in.] are
required, the specifications for same shall be by mutual agreement between interested parties. Permissible variations in sieve
openings and spacings shall be in accordance with Specification E11.
4.1.1 For complete characterization of the size range of a coke sample, the number and size of the selected sieves should be
such that no more than 25 % of the gross sample mass or weight will be retained on any given sieve.
4.1.2 For coke 38.1 mm (1[1 ⁄2 in.)in.] and larger in size, sieves of heavy double-crimped wire and square or rectangular frames
2 2 2 2
with 0.560.56 m to 0.84 m (6 [6 ft to 9 ft )] of sieve area are satisfactory. For coke smaller than 38.1 mm (1[1 ⁄2 in.)in.] in size,
2 2 2 2
sieves of double-crimped wire and square or circular frames with 0.190.19 m to 0.37 m (2 [2 ft to 4 ft )] of sieve area are usually
more convenient.
4.2 Weighing Balance, preferably of the platform type, having a sensitivity of 0.025 kg (0.05 lbs)[0.05 lb] or better, at rated
capacity and with graduations such that 0.05 kg (0.1 lb)[0.1 lb] can be read without interpolation.
This test method is under the jurisdiction of ASTM Committee D05 on Coal and Coke and is the direct responsibility of Subcommittee D05.15 on Metallurgical Properties
of Coal and Coke.
Current edition approved May 1, 2010Sept. 1, 2018. Published May 2010September 2018. Originally approved in 1928. Last previous edition approved in 20042010 as
D293 – 93 (2004).(2010). DOI: 10.1520/D0293-93R10.10.1520/D0293_D0293M-18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
The last approved version of this historical standard is referenced on www.astm.org.
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