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ISO 8264:1989

Hard coal — Determination of the swelling properties using a dilatometer

Nov 23, 1989

General information

90.92     Feb 2, 2026

ISO

ISO/TC 27/SC 5

International Standard

73.040  

French   English  

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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

NOW

PUBLISHED
ISO 8264:1989
90.92 Standard to be revised
Feb 2, 2026

REVISED BY

PROJECT
ISO/CD 8264