ISO 5940:1981

Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of softening point by the ring-and-ball method

Publication date: 1 maj 1981

95.99 Withdrawal of Standard 3 tet 2019

General information

Current stage: 95.99 Effective date: 3 tet 2019

Originator: ISO

Owner: ISO/TC 226

Type: International Standard

ICS: 71.100.10

Gjuha: frëngjisht anglisht

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Statusi: Shfuqizuar

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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.

ISO 5940:1981

Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of softening point by the ring-and-ball method

95.99 Withdrawal of Standard 3 tet 2019

General information

Buying

Scope

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