ISO 10329-2017 PDF

Full title and description

ISO 10329:2017 — Coal — Determination of plastic properties — Constant-torque Gieseler plastometer method. This International Standard specifies a laboratory method using a constant-torque Gieseler plastometer to obtain a relative measure of the plastic behaviour (softening, fluidity and resolidification) of coals and coal blends when heated under prescribed conditions for use in carbonization and related industrial evaluations.

Abstract

ISO 10329:2017 describes apparatus, sample preparation, test procedure, measurement and expression of results for the constant‑torque Gieseler plastometer method. The test produces parameters such as initial softening temperature, maximum fluidity, plastic range and solidification temperature to characterise coal plastic behaviour; calibration and maintenance of equipment are emphasised because results are empirical and comparative.

General information

• Status: Withdrawn (stage: Withdrawal).
• Publication date: 2017-07 (Edition 2 — published 2017).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 73.040 (Coals).
• Edition / version: Edition 2 (ISO 10329:2017).
• Number of pages: 13 (ISO reference edition); national publishers’ PDFs may show different formatted page counts.

Scope

Specifies a laboratory test procedure using a constant‑torque Gieseler plastometer to obtain a relative measure of the plastic behaviour of bituminous coals and blends under controlled heating. The scope covers apparatus dimensions, calibration, sample preparation (sieving and test charge), controlled heating, measurement of stirrer rotations and reporting of derived parameters used for assessing coking behaviour and other thermal-processing performance characteristics. It is intended for quality control, research and comparative evaluations rather than absolute physical modelling.

Key topics and requirements

• Apparatus and dimensions for the Gieseler plastometer (retort, crucible, stirrer/rabble arm, barrel and head) to ensure repeatability.
• Constant torque setting and verification (prescribed torque value and calibration method or validated torque transducer).
• Heating system and bath requirements, including controlled heating rate (typically about 3.0 ± 0.1 °C·min−1) and proper thermocouple placement.
• Sample preparation: representative sampling, size reduction and final test portion passing a 425 µm sieve (specified test charge mass and packing procedure).
• Procedure and measurements: recording stirrer rotations (dial divisions/min) to derive initial softening temperature, maximum fluidity, plastic range and solidification temperature.
• Calibration, maintenance and documentation of repeatability/reproducibility; results are empirical and require consistent equipment calibration.

Typical use and users

Used by coal testing and research laboratories, coke and metallurgical producers, process and quality engineers in carbonization plants, and manufacturers of plastometer instrumentation. Typical applications include screening coals and blends for coke-making suitability, process control in carbonization, and research into coal plasticity and blend performance.

Related standards

Commonly referenced standards and documents used with ISO 10329 include sampling standards (for representative sampling and mechanical sampling of coal such as ISO 18283 and parts of the ISO 13909 series), national sampling and test guidance, and earlier or subsequent editions of ISO 10329 (e.g., ISO 10329:2009 and the edition published/referenced for replacement). Note: ISO 10329:2017 has been shown in national catalogues as replaced by a later ISO 10329 edition (2025 reference in some listings).

Keywords

Gieseler plastometer, coal plasticity, coal fluidity, constant-torque plastometer, initial softening temperature, maximum fluidity, plastic range, solidification temperature, coal testing, carbonization.

FAQ

Q: What is this standard?

A: ISO 10329:2017 is an International Standard that defines a laboratory method (constant-torque Gieseler plastometer) for measuring the relative plastic behaviour of coals when heated, producing parameters used for assessing coking and thermal-processing behaviour.

Q: What does it cover?

A: It covers required apparatus, calibration and torque settings, sample preparation, controlled heating procedure, measurement of stirrer rotations, calculation and reporting of values such as initial softening temperature, maximum fluidity and solidification temperature, plus requirements for calibration and documentation.

Q: Who typically uses it?

A: Coal and coke testing laboratories, metallurgical and coke producers, process engineers involved in carbonization, and instrument manufacturers producing Gieseler plastometers or servicing test equipment.

Q: Is it current or superseded?

A: The ISO record for ISO 10329:2017 indicates the document has entered withdrawal stage (withdrawn). Some national catalogues and publishers list a later replacement edition (references to ISO 10329:2025 appear in national listings). Always check your national standards body or ISO catalogue for the authoritative current status and the correct replacement edition for procurement.

Q: Is it part of a series?

A: ISO 10329 is a standalone test method within the set of standards for hard coal and coke testing and is often used alongside sampling standards (ISO 18283, ISO 13909 series) and other coal testing methods; earlier and later editions of ISO 10329 form the chronological series of revisions.

Q: What are the key keywords?

A: Gieseler plastometer, coal plasticity, constant torque, fluidity, initial softening temperature, maximum fluidity, coking coal testing.