ISO 6257:2002

Carbonaceous materials used in the production of aluminium — Pitch for electrodes — Sampling

ISO 6257:2002 specifies methods for sampling and preparing samples prior to testing of binder pitch used in the manufacture of electrodes for the electrolytic production of aluminium. These methods are applicable to grades of pitch in liquid or solid form, the latter having softening points higher than 30 °C (determined according to the method specified in ISO 5940), in bulk, or in a number of containers making up one batch at sites of manufacture, storage, or delivery. Sampling methods and sampling plans for large consignments, or lots, of pitch in liquid form during the loading and unloading of ships are included.

Produits carbonés utilisés pour la production de l'aluminium — Brais pour électrodes — Échantillonnage

General Information

• Status: Published
• Publication Date: 09-Oct-2002
• ICS: 71.100.10 - Materials for aluminium production
• Technical Committee: ISO/TC 226 - Materials for the production of primary aluminium
• Drafting Committee: ISO/TC 226 - Materials for the production of primary aluminium
• Current Stage: 9020 - International Standard under periodical review
• Start Date: 15-Apr-2024
• Completion Date: 15-Apr-2024

Relations

• Revises: ISO 6257:1980 - Carbonaceous materials used in the production of aluminium — Pitch for electrodes — Sampling
• Effective Date: 15-Apr-2008

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 6257
Second edition
2002-10-01
Carbonaceous materials used in the
production of aluminium — Pitch for
electrodes — Sampling
Produits carbonés utilisés pour la production de l'aluminium — Brais pour
électrodes — Échantillonnage

Reference number
ISO 6257:2002(E)
© ISO 2002

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ISO 6257:2002(E)
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ii ISO 2002 – All rights reserved

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ISO 6257:2002(E)
Contents Page
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General procedures and precautions . 3
5 Sampling of solid pitch . 5
6 Soft pitches . 9
7 Hot liquid pitch . 10
8 Sample size reduction . 17
9 Sample containers . 19
10 Sampling report . 19
Bibliography. 21
©
ISO 2002 – All rights reserved iii

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ISO 6257:2002(E)
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