What is ISO 5940-1 - Determination of softening point by the ring-and-ball method about?
ISO 5940-1 is the first part of the multiple series that 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.
Note-
The method is applicable to pitches having softening points equal to or greater than 30 °C.
Who is ISO 5940-1 - Determination of softening point by the ring-and-ball method for?
ISO 5940-1 on Determination of softening point by the ring-and-ball method is useful for:
- Manufacturers and suppliers of aluminium 
- Aluminium testing facilities
Why should you use ISO 5940-1 - Determination of softening point by the ring-and-ball method?
ISO 5940-1 provides you with principles, apparatus, test procedures, it helps you to determine the softening point of pitch, that is necessary to melt the sample and particularly its reproducibility, which is considerably influenced by the homogeneity of the molten sample and its freedom from air bubbles.
ISO 5940-1 helps to minimize variations in test results by standardizing the temperature and heating time.
What’s changed since the last update?
BS ISO 5940-1:2019 supersedes BS 60431.3:1983, which is withdrawn
The main changes compared to the previous edition are as follows:
- 5.1.6 has changed to 6.1.2 which has been modified so that mercury thermometers are no longer required
- Annex A has been modified
