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Norm

ISO 501:1981

Issue date: 1981 11 01

Coal — Determination of the crucible swelling number

The sample is heated in a covered crucible under standard conditions to a final temperature of 820 +- 5 °C. The coke button obtained is classified by comparison with the ...
Withdrawn: 2003 11 04
Publisher:
International Organization for Standardization
Format:
Digital | 5 Pages
Language:
English
Currently valid:

The sample is heated in a covered crucible under standard conditions to a final temperature of 820 +- 5 °C. The coke button obtained is classified by comparison with the outlines of a set of standard profiles. The number of the profile most closely corresponding to the coke button obtained is the crucible swelling number. Gas or electrical heating may be used. When using an electrically heated apparatus, the results obtained should be the same (within 1/2 unit) as those obtained by the gas heating method.

ISO 501:2012
2012 08 16
Hard coal — Determination of the crucible swelling number
Norm
ISO 501:2003
2003 11 04
Hard coal — Determination of the crucible swelling number
Norm
ISO 501:1981
1981 11 01
Coal — Determination of the crucible swelling number
Norm
Norm
ISO 501:2003
Issue date : 2003 11 04
Hard coal — Determination of the crucible swelling number