ISO 5940:1981 PDF
Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of softening point by the ring-and-ball method
Open preview (PDF)Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of softening point by the ring-and-ball methodCarbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of softening point by the ring-and-ball method
- Document status:
- Withdrawn
- Format:
- Electronic (PDF)
- Number of pages:
- 5
- Publication date:
- May 1, 1981
- Edition:
- ISO IS 5940 edition 1 version 1
- ICS:
- 71.100.10
Specifies a method using a disc-shped test piece to be prepared by moulding a test portion ina ring which is fitted into a heated bath. A steel ball is placed on the upper surface of the test piece. Then the temperature (softening temperature) is determined at which the test piece, on heating at a prescribed rate, softens sufficiently to sag to a specifeid depth under the mass of the ball. Details on the thermometers to be used and information on the melting of pitch samples are included in two annexes.
Technical details
- Technical committee
- ISO/TC 226 - Materials for the production of primary aluminium
- SKU
- ISO 5940:1981
