ISO 18515:2007

INTERNATIONAL ISO
STANDARD 18515
First edition
2007-03-15

Carbonaceous materials for the
production of aluminium — Cathode
blocks and baked anodes —
Determination of compressive strength
Produits carbonés utilisés pour la production de l'aluminium — Blocs
cathodiques et anodes cuites — Détermination de la résistance à la
compression



Reference number
ISO 18515:2007(E)
©
ISO 2007

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ISO 18515:2007(E)
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ISO 18515:2007(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
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The main task of technical committees is to prepare International Standards. Draft International Standards
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International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 18515 was prepared by Technical Committee ISO/TC 226, Materials for the production of primary
aluminium.
This International Standard is based on a DIN method, DIN 51910:1997, Testing of carbon materials —
Determination of compressive strength — Solid materials, prepared by Arbeitsausschuß NMP 281 “Test
Methods for Carbon and Graphite”.
© ISO 2007 – All rights reserved iii

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INTERNATIONAL STANDARD ISO 18515:2007(E)

Carbonaceous materials for the production of aluminium —
Cathode blocks and baked anodes — Determination of
compressive strength
1 Scope
This International Standard specifies a method to determine the compressive strength of carbonaceous and
graphite materials (solids), for the production of aluminium, at room temperature.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 376, Metallic materials — Calibration of force-proving instruments used for the verification of uniaxial
testing machines
ISO 7500-1, Metallic materials — Verification of static uniaxial testing machines — Part 1:
Tension/compression testing machines — Verification and calibration of the force-measuring system
ISO 8007-1, Carbonaceous materials used in the production of aluminium — Sampling plans and sampling
from individual units — Part 1: Cathode blocks
ISO 8007-2, Carbonaceous materials used in the production of aluminium — Sampling plans and sampling
from individual units — Part 2: Prebaked anodes
ISO 8007-3, Carbonaceous materials used in the production of aluminium — Sampling plans and sampling
from individual units — Part 3: Sidewall blocks
DIN 862, Vernier callipers; requirements and testing
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
compressive strength
σ
dB
ratio of the maximum force F during a compressive experiment leading to fracture and the initial cross-
max
section A of the specimen
F
max
= (1)
σ
dB
A
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