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ISO 5074:2015

Hard coal — Determination of Hardgrove grindability index ISO 5074:2015

Publication date:   Sep 29, 2015

General information

90.60   Close of review   Sep 3, 2026

ISO

ISO/TC 27/SC 5 Methods of analysis

International Standard

73.040   Coals

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Scope

ISO 5074:2015 specifies the method for determining the grindability index of hard coal using the Hardgrove machine. It also specifies the procedure for calibrating the test machine and for preparing the standard reference coal samples.
NOTE In this International Standard, the term "hard coal" is used as an indication of maturity or rank in the coalification sequence and is not related to the physical properties of the coal.

Life cycle

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WITHDRAWN
ISO 5074:1994

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PUBLISHED
ISO 5074:2015
90.60 Close of review
Sep 3, 2026




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