oSIST prEN ISO 2477:2025

Shaped insulating refractory products - Determination of permanent change in dimensions on heating (ISO 2477:2005)

ISO 2477:2005 describes a method for determining the permanent change in dimensions on heating of a shaped insulating refractory product.

Geformte feuerfeste Erzeugnisse für Wärmedämmzwecke - Bestimmung der bleibenden Längenänderung nach Temperatureinwirkung (ISO 2477:2005)

Produits réfractaires isolants façonnés - Détermination de la variation permanente de dimensions sous l'action de la chaleur (ISO 2477:2005)

Texte du domaine d’application. La présente Norme internationale décrit une méthode permettant de déterminer la variation permanente des dimensions d'un produit réfractaire isolant façonné sous l'action de la chaleur.

Toplotnoizolacijski ognjevzdržni izdelki - 6. del: Ugotavljanje trajnih sprememb mer oblikovanih izdelkov pri segrevanju (ISO 2477:2005)

General Information

• Status: Not Published
• Public Enquiry End Date: 30-Mar-2025
• ICS: 81.080 - Refractories
• Technical Committee: IKER - Ceramics
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 03-Feb-2025
• Due Date: 23-Jun-2025
• Completion Date: 31-Mar-2025
• Ref Project: prEN ISO 2477 - Shaped insulating refractory products - Determination of permanent change in dimensions on heating (ISO 2477:2005)

Relations

• Revises: SIST EN 1094-6:2000 - Insulating refractory products - Part 6: Determination of permanent change in dimensions of shaped products on heating (ISO 2477:1987 modified)
• Effective Date: 05-Nov-2024

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2025
Toplotnoizolacijski ognjevzdržni izdelki - 6. del: Ugotavljanje trajnih sprememb
mer oblikovanih izdelkov pri segrevanju (ISO 2477:2005)
Shaped insulating refractory products - Determination of permanent change in
dimensions on heating (ISO 2477:2005)
Geformte feuerfeste Erzeugnisse für Wärmedämmzwecke - Bestimmung der bleibenden
Längenänderung nach Temperatureinwirkung (ISO 2477:2005)
Produits réfractaires isolants façonnés - Détermination de la variation permanente de
dimensions sous l'action de la chaleur (ISO 2477:2005)
Ta slovenski standard je istoveten z: prEN ISO 2477
ICS:
81.080 Ognjevzdržni materiali Refractories
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 2477
Third edition
2005-06-15
Shaped insulating refractory products —
Determination of permanent change in
dimensions on heating
Produits réfractaires isolants façonnés — Détermination de la variation
permanente de dimensions sous l'action de la chaleur

Reference number
ISO 2477:2005(E)
©
ISO 2005
ISO 2477:2005(E)
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ISO 2477:2005(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
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 2477 was prepared by Technical Committee ISO/TC 33, Refractories.
This third edition cancels and replaces the second edition (ISO 2477:1987), which has been technically
revised to align it with EN 1094-6. The principal changes concern
 normative references,
 terms and definitions to bring the standard into line with ISO 836, and
 revisions to clauses concerning sampling, measuring equipment, test temperature and distribution, and
heating.
INTERNATIONAL STANDARD ISO 2477:2005(E)

Shaped insulating refractory products — Determination of
permanent change in dimensions on heating
1 Scope
This International Standard describes a method for determining the permanent change in dimensions on
heating of a shaped insulating refractory product.
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 5016, Shaped insulating refractory products — Determination of bulk density and true porosity
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
permanent change in dimensions on heating
dimensional expansion or contraction that remains in a refractory that is heated with no externally applied
force to a specified temperature for a specified time and then cooled to ambient temperature
3.2
insulating refractory product
shaped refractory having a true porosity of not less than 45 % (volume fraction) when determined in
accordance with ISO 5016
4 Principle
Test pieces in the shape of rectangular prisms are cut from each brick or item, then dried and the distance
between two opposite faces on each test piece is measured. The test pieces are heated in a furnace having
an oxidizing atmosphere, at a prescribed rate to a specified temperature which is maintained for a specified
time. After cooling to ambient temperature, the test pieces are measured again, and the permanent change in
dimensions is calculated.
5 Apparatus
5.1 Furnace, either electric or gas-fired, capable of heating the test pieces described in 6.2, in a
continuously oxidizing atmosphere, at the specified rate (see 7.6), and of maintaining the test temperature for
the required time.
The use of an electric furnace is recommended, but a gas-fired furnace may be used provided that the furnace
atmosphere is continuously oxidizing and there is provision for monitoring this condition.
ISO 2477:2005(E)
5.2 Thermocouples, minimum of three, to measure the temperature and the temperature distribution
above the space occupied by the test pieces.
5.3 Temperature/time registration device, for use in conjunction with the thermocouples (5.2), so that a
continuous record of the temperature is obtained.
5.4 Length-measuring instrument, to enable measurements to be made of the distance between opposite
faces of the test pieces to an accuracy of 0,1 mm.
EXAMPLES Vernier callipers, a dial-gauge comparator or electronic digital gauge.
5.5 Drying oven, preferably fan-assisted, having openings which permit efficient ventilation, and capable of
being controlled at 110 °C ± 5 °C.
6 Test pieces
6.1 Sampling
The number of items
...