International Standard
ISO 8264:1989
Hard coal — Determination of the swelling properties using a dilatometer
Reference number
ISO 8264:1989
Edition 1
International Standard
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ISO 8264:1989
Published (Edition 1, 1989)
This standard was last reviewed and confirmed in 2018. Therefore this version remains current.

ISO 8264:1989

ISO 8264:1989
CHF 63
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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.

General information

  •  : Published
     : 1989-11
    : Close of review [90.60]
  •  : 1
     : 9
  • ISO/TC 27/SC 5
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