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ISO 540:2025

Hard coal — Determination of ash fusibility

Publication date:   Aug 8, 2025

General information

60.60   Standard published   Aug 8, 2025

ISO

ISO/TC 27/SC 5 Methods of analysis

International Standard

73.040   Coals | 75.160.10   Solid fuels

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Scope

This document specifies a method of determining the characteristic fusion temperatures of ash from hard coal.
NOTE            Descriptors: fossil fuels, ash, ashes, tests, high temperature tests, determination, and fusibility.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 540:2008

NOW

PUBLISHED
ISO 540:2025
60.60 Standard published
Aug 8, 2025