International Standard
ISO 540:2025
Hard coal — Determination of ash fusibility
Reference number
ISO 540:2025
Edition 5
2025-08
© ISO 2026
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Published (Edition 5, 2025)

ISO 540:2025

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Abstract

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.

General information

  • Status
     : Published
    Publication date
     : 2025-08
    Stage
    : International Standard published [60.60]
  • Edition
     : 5
    Number of pages
     : 9
  • Technical Committee :
    ISO/TC 27/SC 5
    ICS :
    73.040  75.160.10 
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