ISO 5940-1:2019

Carbonaceous materials used in the production of aluminium - Pitch for electrodes - Part 1: Determination of softening point by the ring-and-ball method

This document specifies the ring-and-ball method, a method of using the ring-and-ball apparatus for the determination of the softening point (softening temperature) of pitch used in the production of aluminium.

The method is applicable to pitches having softening points equal to or greater than 30 °C.

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