EN ISO 10081-4:2014

SLOVENSKI STANDARD
01-november-2014
1DGRPHãþD
SIST EN 12475-4:2000
Razvrstitev gostih oblikovanih ognjevzdržnih izdelkov - 4. del: Posebni izdelki (ISO
10081-4:2014)
Classification of dense shaped refractory products - Part 4: Special products (ISO 10081-
4:2014)
Klassifizierung dichter geformter feuerfester Erzeugnisse - Teil 4: Sondererzeugnisse
(ISO 10081-4:2014)
Classification des produits réfractaires façonnés denses - Partie 4: Produits spéciaux
(ISO 10081-4:2014)
Ta slovenski standard je istoveten z: EN ISO 10081-4:2014
ICS:
81.080 Ognjevzdržni materiali Refractories
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 10081-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2014
ICS 81.080 Supersedes EN 12475-4:1998
English Version
Classification of dense shaped refractory products - Part 4:
Special products (ISO 10081-4:2014)
Classification des produits réfractaires façonnés denses - Klassifizierung dichter geformter feuerfester Erzeugnisse -
Partie 4: Produits spéciaux (ISO 10081-4:2014) Teil 4: Sondererzeugnisse (ISO 10081-4:2014)
This European Standard was approved by CEN on 30 July 2014.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10081-4:2014 E
worldwide for CEN national Members.

Contents Page
Foreword .3
Foreword
This document (EN ISO 10081-4:2014) has been prepared by Technical Committee ISO/TC 33 “Refractories”
in collaboration with Technical Committee CEN/TC 187 “Refractory products and materials” the secretariat of
which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by March 2015, and conflicting national standards shall be withdrawn at
the latest by March 2015.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12475-4:1998.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 10081-4:2014 has been approved by CEN as EN ISO 10081-4:2014 without any modification.
INTERNATIONAL ISO
STANDARD 10081-4
Second edition
2014-09-01
Classification of dense shaped
refractory products —
Part 4:
Special products
Classification des produits réfractaires façonnés denses —
Partie 4: Produits spéciaux
Reference number
ISO 10081-4:2014(E)
©
ISO 2014
ISO 10081-4:2014(E)
© ISO 2014
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Published in Switzerland
ii © ISO 2014 – All rights reserved

ISO 10081-4:2014(E)
Contents Page
Foreword .iv
1 Scope .1
2 Principle .1
3 Classification .1
3.1 Type of product . 1
3.2 Group . 2
3.3 Nature of raw materials . 8
3.4 State of raw materials . 9
3.5 Nature of the bond . 9
3.6 Post-treatment . 9
4 Other refractory products .10
5 Designation of a special product .10
Bibliography .11
ISO 10081-4:2014(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 technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
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. Details of any
patent rights identified during the development of the document will be in the Introduction and/or on
the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information.
The committee responsible for this document is ISO/TC 33, Refractories.
This second edition cancels and replaces the first edition (ISO 10081-4:2007), of which it constitutes a
minor revision. Changes have been made to Tables 7 and 8 and the bibliography has been updated.
ISO 10081 consists of the following parts, under the general title Classification of dense shaped refractory
products:
— Part 1: Alumina-silica
— Part 2: Basic products containing less than 7 % residual carbon
— Part 3: Basic products containing from 7 % to 50 % residual carbon
— Part 4: Special products
iv © ISO 2014 – All rights reserved

INTERNATIONAL STANDARD ISO 10081-4:2014(E)
Classification of dense shaped refractory products —
Part 4:
Special products
1 Scope
This part of ISO 10081 specifies the classification and designation of dense shaped refractory products
of special composition including
a) oxide products,
b) oxide and non-oxide products,
c) non-oxide silicon carbide or carbon-based products, and
d) further special products which are only designated but not classified, for example, non-oxide
products, such as boride, nitride or further combinations of the series listed above.
2 Principle
Dense shaped special products shall be classified according to the following six criteria:
a) the type of product;
b) the group determined by the content of its main chemical component(s);
c) the principal raw material(s);
d) the state of the raw materials;
e) the nature of the bond;
f) any post-treatment.
3 Classification
3.1 Type of product
The following types of dense shaped refractory special products shall be classified by chemical analysis
as shown in 3.2.
a) alumina-chromia (ACr);
b) chromia (Cr);
c) alumina-chromia-zirconia (ACrZ);
d) alumina-chromia-zirconia-silica (ACrZS);
e) zirconia-silica (ZS);
f) alumina-zirconia-silica (AZS);
g) alumina-carbon (AC);
ISO 10081-4:2014(E)
h) alumina-magnesia-carbon (AMC);
i) alumina-fused silica-carbon (AFC);
j) alumina-silicon carbide-carbon (ASC);
k) zirconia-carbon (ZC);
l) silicon carbide (SiC);
m) carbon (C).
3.2 Group
The groups of dense shaped refractory special products in the above-mentioned series shall be
determined by the content of their main chemical component(s) as shown in Tables 1 to 12, and in
accordance with the ranges given in the tables.
Table 1 — Alumina-chromia refractory special products —
Classification by product type and group
Contents
Designation Group % (mass fraction)
Al O Cr O
2 3 2 3
ACr90/5 90 ≤ Al O < 95 5 ≤ Cr O < 10
2 3 2 3
ACr80/10 80 ≤ Al O < 90 10 ≤ Cr O < 20
2 3 2 3
Alumina-Chromia ACr70/20 70 ≤ Al O < 80 20 ≤ Cr O < 30
2 3 2 3
ACr60/30 60 ≤ Al O < 70 30 ≤ Cr O < 40
2 3 2 3
ACr50/40 50 ≤ Al O < 60 40 ≤ Cr O < 50
2 3 2 3
Cr90 90 ≤ Cr O
2 3
Chromia
Cr50 50 ≤ Cr O < 90
2 3
NOTE The analysis is carried out on calcined products using International Standards such as ISO 12677.
Table 2 — Alumina-chromia-zirconia refractory special products —
Classification by product type and group
Contents
Designation Group
% (mass fraction)
Al O Cr O ZrO
2 3 2 3 2
ACrZ15/5 15 < Al O ≤ 70 5 ≤ Cr O < 25 25 ≤ ZrO < 50
2 3 2 3 2
Alumina-Chromia-Zir-
ACrZ5/25 5 < Al
O ≤ 65 25 ≤ Cr O < 40 10 ≤ ZrO < 40
2 3 2 3 2
conia
ACrZ5/40 5 < Al O ≤ 55 40 ≤ Cr O < 80 5 ≤ ZrO < 30
2 3 2 3 2
NOTE 1
Al O + Cr O + ZrO ≥ 85 % by mass,
2 3 2 3 2
5% by mass < Al O ≤ 70 % by mass,
2 3
5% by mass ≤ Cr O < 80 % by mass, and
2 3
5% by mass < ZrO ≤ 50 % by mass.
NOTE 2   ZrO content includes HfO .
2 2
NOTE 3   The analysis is carried out on calcined products using International Standards such as ISO 12677.
2 © ISO 2014 – All rights reserved

ISO 10081-4:2014(E)
Table 3 — Alumina-chromia-zirconia-silica refractory special products —
Classification by product type and group
Contents
Designation Group % (mass fraction)
Al O Cr O ZrO +SiO
2 3 2 3 2 2
ACrZS20/10 20 < Al O ≤ 55 10 ≤ Cr O < 25 25 ≤ ZrO +SiO < 50
2 3 2 3 2 2
Alumina-Chromia-Zir-
ACrZS15/25 15 < Al O ≤ 60 25 ≤ Cr O < 40 10 ≤ ZrO
...