prBAS ISO 501:2026

Hard coal — Determination of the crucible swelling number

General information

Status:Project

Number of pages:11

Adoption method:Korice

Language:engleski

Edition:4.

Realization date:17.11.2025

Forseen date for next stage code:27.11.2025

Technical committee:BAS/TC 27, Mining

ICS:

75.160.10, Solid fuels
73.040, Coals

Abstract

This document specifies a method for determining the swelling properties of hard coal when heated in a covered crucible. NOTE The "crucible swelling number" (CSN) is also known as the "free swelling index" (FSI).

Lifecycle

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Original document and degree of correspondence

ISO 501:2025, identical

Relation to BAS standards

prBAS ISO 501:2026

replaces

BAS ISO 501:2014

Work material

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