ASTM D293/D293M-18 PDF

Full title and description

ASTM D293/D293M-18 — Standard Test Method for the Sieve Analysis of Coke. This procedure defines a laboratory method to separate a coke sample into specified size fractions using test sieves and to report each fraction as a mass (weight) percent of the gross sample; it is issued in dual-designation form to allow use of either SI (metric) or inch–pound units (D293 for inch–pound, D293M for SI).

Abstract

This standard specifies sampling preparation references, recommended sieve types and sizes, sample splitting and weighing practices, and reporting conventions needed to determine the particle-size distribution of metallurgical coke. It is intended for quality control, specification compliance, and reporting of size distributions used in metallurgical and industrial processes.

General information

• Status: Active.
• Publication date: 1 September 2018 (designation D293/D293M-18).
• Publisher: ASTM International.
• ICS / categories: Solid fuels / Coal and coke (ICS code: 75.160.10).
• Edition / version: D293/D293M-18 (revises D293-93(2010)).
• Number of pages: 2 (concise test method).

Scope

The test method describes the separation of a coke sample into defined size fractions and the expression of those fractions as a mass (weight) percent of the gross sample. The standard treats SI and inch–pound units as separate systems (do not mix units), identifies required apparatus (sieves meeting E11, perforated-plate sieves where applicable), and references sample collection/preparation practices such as Practice D346/D346M. Safety and environmental responsibilities for users are noted but not prescribed.

Key topics and requirements

• Definition of size fractions and reporting results as weight percent of the gross sample.
• Use of sieves conforming to ASTM E11 (woven-wire) or perforated-plate sieves where specified; guidance for sieve area for large particles.
• Reference to sample collection and preparation Practice D346/D346M to ensure representative test portions.
• Balance sensitivity and weighing conventions (recommended sensitivity and readability for typical sample masses).
• Instructions on selecting sieve series and number so that no more than ~25% of the gross mass is retained on any one sieve for effective characterization.
• Separate treatment of SI and inch–pound units—each system is a complete standard in itself; do not combine values from both systems.

Typical use and users

Used by metallurgical coke producers, steel and ironworks quality-control laboratories, independent testing laboratories, coal and coke traders, researchers and anyone requiring a standardized particle-size distribution of coke for specification compliance, process control, or material acceptance testing. Typical applications include blast-furnace charge specification, quality inspection of delivered coke, and laboratory characterization for process design.

Related standards

Commonly referenced and related documents include Practice D346/D346M (collection and preparation of coke samples), ASTM E11 (specification for woven-wire test sieves), ASTM E323 (perforated-plate sieves), and other D05 committee practices and guides for coal and coke testing. The 2018 revision replaces earlier D293 editions (including D293-93 reapproved 2010).

Keywords

coke, sieve analysis, particle size distribution, size fractions, sample preparation, coal and coke, sieves, ASTM D293, D293M-18, breakage, degradation.

FAQ

Q: What is this standard?

A: ASTM D293/D293M-18 is the Standard Test Method for the Sieve Analysis of Coke — a short ASTM procedure for separating coke into defined size fractions and reporting the results as mass percent of the sample.

Q: What does it cover?

A: It covers the laboratory sieving procedure, recommended sieve types and sizes, weighing and reporting conventions, unit-system treatment (SI vs inch–pound), and references to sample collection and preparation practices needed to obtain representative results.

Q: Who typically uses it?

A: Metallurgical coke producers, steelmakers, independent testing labs, quality assurance personnel, and researchers working with coke particle-size specifications and process control.

Q: Is it current or superseded?

A: Current (active) as of its 2018 publication; it supersedes earlier editions (for example, D293-93 as reapproved in 2010). Users should check for any later revisions or amendments before relying on it for contractual specifications.

Q: Is it part of a series?

A: It is part of ASTM Committee D05 work on Coal and Coke test methods and is often used alongside related D05 standards and practices (e.g., D346/D346M for sampling, E11 for sieve specifications). The dual-designation (D293/D293M) provides inch–pound and SI versions.

Q: What are the key keywords?

A: Coke, sieve analysis, particle-size distribution, breakage, sample preparation, ASTM D293, D293M-18.