ISO/TS 4699:2022

Hard Coal — Determination of plastometric indices — Manual method

Publication date: Aug 17, 2022

General information

Current stage: 90.92 Effective date: Feb 2, 2026

Originator: ISO

Owner: ISO/TC 27/SC 5

Type: Technical Specification

ICS: 73.040

Languages: English

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Status: Published

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Scope

This document specifies a manual method for the determination of plastometric indices. These indices are the maximum thickness of the plastic layer (Y, mm) and the final contraction value (X, mm).
This document is applicable for hard coals with a determined ash level less than 15 % on a dry basis, as described in ISO 11722 and ISO 1171.

Life cycle

NOW

PUBLISHED
ISO/TS 4699:2022
90.92 Standard to be revised
Feb 2, 2026

REVISED BY

IN_DEVELOPMENT
ISO/CD TS 4699