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ISO/DIS 8264

Hard coal — Determination of the swelling properties using a dilatometer

General information

40.00     Aug 28, 2026

ISO

ISO/TC 27/SC 5

International Standard

73.040  

Scope

A test piece, in the form of a pencil, prepared from powdered coal is heated at a constant rate in a steel retort positioned in a furnace, the temperature monitoring system having been previously calibrated using two reference metals of known melting points. The change in level of a piton resting upon the test piece is observed continuously, and record is produced which is characteristic of the swelling properties of the coal.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 8264:1989

NOW

PROJECT
ISO/DIS 8264
40.00 DIS registered
Aug 28, 2026