EN ISO 1927-8:2012

Monolithic (unshaped) refractory products - Part 8: Determination of complementary properties (ISO 1927-8:2012)

ISO 1927-8:2012 specifies methods for the determination of the properties of unshaped refractory materials from test pieces prepared and stored in accordance with ISO 1927-5. The methods complement those described in ISO 1927-6.
The methods have been adapted from standards for shaped refractory products to make them applicable to dense and insulating castables, and ramming materials as defined in ISO 1927-1, before and after firing.

Ungeformte (monolithische) feuerfeste Erzeugnisse - Teil 8: Bestimmung zusätzlicher Eigenschaften (ISO 1927-8:2012)

Dieser Teil der ISO 1927 legt Verfahren zur Bestimmung der Eigenschaften von ungeformten feuerfesten Werkstoffen fest, die an nach ISO 1927 5 hergestellten und gelagerten Probekörpern ermittelt werden. Die Verfahren sind eine Ergänzung zu den in ISO 1927 6 beschriebenen.
Die Verfahren basieren auf Normen für geformte feuerfeste Erzeugnisse und wurden so abgeändert, dass sie auf die in ISO 1927 1 festgelegten dichten und wärmedämmenden Feuerbetone und Rammmassen im ungebrannten und gebrannten Zustand anwendbar sind.

Produits réfractaires monolithiques (non façonnés) - Partie 8: Détermination des caractéristiques complémentaires (ISO 1927-8:2012)

L'ISO 1927-8:2012 spécifie des méthodes pour la détermination des propriétés de matériaux réfractaires monolithiques (non façonnés) à partir d'éprouvettes préparées et conservées conformément à l'ISO 1927-5. Les méthodes complètent celles décrites dans l'ISO 1927-6.
Les méthodes ont été adaptées à partir de Normes internationales pour produits réfractaires façonnés pour les rendre applicables aux bétons denses et isolants ainsi qu'aux matériaux moulables tels que définis dans l'ISO 1927-1, avant et après cuisson.

Neoblikovani ognjevzdržni izdelki - 8. del: Ugotavljanje komplementarnih lastnosti (ISO 1927-8:2012)

Ta del standarda ISO 1927 določa metode za ugotavljanje lastnosti neoblikovanih ognjevzdržnih izdelkov iz vzorcev, pripravljenih in skladiščenih v skladu s standardom ISO 1927-5. Te metode dopolnjujejo metode iz standarda ISO 1927-6. Te metode izhajajo iz standardov za oblikovane ognjevzdržne izdelke ter so prilagojene zgoščenim in izolacijskim betonom ter mašilnim materialom, kot je opredeljeno v standardu ISO 1927-1, pred žganjem in po njem.

General Information

• Status: Published
• Publication Date: 30-Nov-2012
• Withdrawal Date: 29-Jun-2013
• ICS: 81.080 - Refractories
• Technical Committee: CEN/TC 187 - Refractory products and materials
• Drafting Committee: CEN/TC 187/WG 2 - Unshaped refractory materials
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 01-Dec-2012
• Completion Date: 01-Dec-2012
• Ref Project: SIST EN ISO 1927-8:2013 - Unshaped refractory materials - Part 8: Determination of complementary properties (ISO 1927-8:2012)

Relations

• Replaces: EN 1402-8:2003 - Unshaped refractory products - Part 8: Determination of complementary properties
• Effective Date: 22-Dec-2008
• Refers: ISO 1927-5:2012 - Monolithic (unshaped) refractory products — Part 5: Preparation and treatment of test pieces
• Effective Date: 09-Feb-2026
• Refers: ISO 1927-1:2012 - Monolithic (unshaped) refractory products — Part 1: Introduction and classification
• Effective Date: 09-Feb-2026
• Refers: ISO 8890:1988 - Dense shaped refractory products — Determination of resistance to sulfuric acid
• Effective Date: 09-Feb-2026
• Refers: ISO 1927-6:2012 - Monolithic (unshaped) refractory products — Part 6: Measurement of physical properties
• Effective Date: 09-Feb-2026
• Refers: ISO 8894-1:2010 - Refractory materials — Determination of thermal conductivity — Part 1: Hot-wire methods (cross-array and resistance thermometer)
• Effective Date: 09-Feb-2026
• Refers: ISO 1927-2:2012 - Monolithic (unshaped) refractory products — Part 2: Sampling for testing
• Effective Date: 09-Feb-2026
• Refers: ISO 1927-3:2012 - Monolithic (unshaped) refractory products — Part 3: Characterization as received
• Effective Date: 09-Feb-2026
• Refers: ISO 10060:1993 - Dense, shaped refractory products — Test methods for products containing carbon
• Effective Date: 09-Feb-2026
• Refers: ISO 8894-2:2007 - Refractory materials — Determination of thermal conductivity — Part 2: Hot-wire method (parallel)
• Effective Date: 09-Feb-2026
• Refers: EN 993-11:2007 - Methods of test for dense shaped refractory products - Part 11: Determination of resistance to thermal shock
• Effective Date: 28-Jan-2026
• Refers: EN 12470-2:2000/prA1 - Clinical thermometers - Part 2: Phase change type (dot matrix) thermometers
• Effective Date: 28-Jan-2026
• Refers: EN 2821:2007 - Aerospace series - Steel FE-PM1802 (X5CrNiCu15-5) - Consumable electrode remelted - Solution treated and precipitation treated - Bar for machining - a or D ≤ 200 mm - Rm ≥ 1 310 MPa
• Effective Date: 28-Jan-2026
• Referred By: CEN/TS 17332:2019 - Construction products: Assessment of release of dangerous substances - Analysis of organic substances in eluates
• Effective Date: 28-Jan-2026
• Referred By: EN 17332:2023 - Construction products: Assessment of release of dangerous substances - Analysis of organic substances in eluates
• Effective Date: 28-Jan-2026

Overview

EN ISO 1927-8:2012 (Monolithic (unshaped) refractory products - Part 8: Determination of complementary properties) is a key international standard developed by CEN and ISO. This standard establishes methods for determining additional properties of unshaped refractory materials, such as castables and ramming materials, as defined in ISO 1927-1. These methods employ test pieces prepared according to ISO 1927-5 and complement those found in ISO 1927-6. The standard adapts procedures commonly used for shaped refractories, extending their practical application to both dense and insulating unshaped products, before and after firing.

Monolithic refractory products play a critical role in high-temperature industrial environments, such as furnaces, kilns, and reactors, where performance and resistance to aggressive conditions (thermal, chemical, and mechanical) are vital. The ability to determine complementary material properties helps manufacturers, users, and laboratories assure product quality, compliance, and durability.

Key Topics

EN ISO 1927-8:2012 covers standardized test methods for various complementary properties of unshaped refractories, with focus on:

• Permeability to gases: Assessment of how gases pass through refractory materials, crucial for applications where gas flow or resistance is significant.
• Thermal shock resistance: Determination of a material’s ability to withstand rapid temperature changes without damage, referencing EN 993-11 for methodology.
• Thermal conductivity: Evaluation of heat transfer properties, using ISO 8894-1 or ISO 8894-2 test methods.
• Sulfuric acid resistance: Testing the chemical durability of materials exposed to sulfuric acid, conducted as per ISO 8890.
• Properties of carbon-containing products: Includes testing before and after carbonization, and after removal of all carbon, following ISO 10060.
• Resistance to carbon monoxide: Measured as specified in ISO 12676, important for refractories used in reducing atmospheres.
• Abrasion resistance at ambient temperature: Determined according to ISO 16282, ensuring mechanical durability.

Each property is determined using specific sample preparation, testing conditions, and procedures to ensure consistency and repeatability of results across laboratories and industries.

Applications

EN ISO 1927-8:2012 is essential for a broad range of stakeholders in the refractories sector:

• Manufacturers: To certify product performance, develop new formulations, and guarantee quality for high-temperature industrial clients.
• Industrial users: Refineries, metallurgical plants, cement kilns, and power plants use these test results to select the right refractory materials for challenging operational environments.
• Testing laboratories: The standard enables reliable assessment and comparison of material properties, supporting research, failure analysis, and quality control.
• Engineers and designers: Utilization of compliant data in project specifications and maintenance planning ensures optimal material performance and safety.

By standardizing test methods, EN ISO 1927-8 facilitates trade, regulatory compliance, and the development of innovative refractory technologies.

Related Standards

To fully implement and apply EN ISO 1927-8:2012, familiarity with related standards is recommended:

• ISO 1927-1: Introduction and classification of monolithic (unshaped) refractories
• ISO 1927-2: Sampling for testing
• ISO 1927-3: Characterization as received
• ISO 1927-5: Preparation and treatment of test pieces
• ISO 1927-6: Measurement of physical properties
• ISO 8841: Determination of permeability to gases
• ISO 8894-1 / ISO 8894-2: Determination of thermal conductivity
• ISO 10060: Test methods for products containing carbon
• ISO 8890: Resistance to sulfuric acid
• ISO 12676: Resistance to carbon monoxide
• ISO 16282: Resistance to abrasion at ambient temperature
• EN 993-11: Resistance to thermal shock

EN ISO 1927-8:2012 is an integral part of the ISO 1927 series, supporting the reliable and efficient use of unshaped refractory products worldwide.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2013
1DGRPHãþD
SIST EN 1402-8:2004
Neoblikovani ognjevzdržni izdelki - 8. del: Ugotavljanje komplementarnih lastnosti
(ISO 1927-8:2012)
Unshaped refractory materials - Part 8: Determination of complementary properties (ISO
1927-8:2012)
Ungeformte feuerfeste Erzeugnisse - Teil 8: Bestimmung zusätzlicher Eigenschaften
(ISO 1927-8:2012)
Produits réfractaires non façonnés - Partie 8: Détermination des caractéristiques
complémentaires (ISO 1927-8:2012)
Ta slovenski standard je istoveten z: EN ISO 1927-8:2012
ICS:
81.080 Ognjevzdržni materiali Refractories
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 1927-8
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2012
ICS 81.080 Supersedes EN 1402-8:2003
English Version
Monolithic (unshaped) refractory products - Part 8:
Determination of complementary properties (ISO 1927-8:2012)
Produits réfractaires monolithiques (non façonnés) - Partie Ungeformte (monolithische) feuerfeste Erzeugnisse - Teil 8:
8: Détermination des caractéristiques complémentaires Bestimmung zusätzlicher Eigenschaften (ISO 1927-8:2012)
(ISO 1927-8:2012)
This European Standard was approved by CEN on 30 November 2012.

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

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 1927-8:2012: E
worldwide for CEN national Members.

Contents Page
Foreword . 3

Foreword
This document (EN ISO 1927-8:2012) 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 June 2013, and conflicting national standards shall be withdrawn at
the latest by June 2013.
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 1402-8:2003.
According to the CEN/CENELEC Internal Regulations, the national standards organisations 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 1927-8:2012 has been approved by CEN as a EN ISO 1927-8:2012 without any modification.

INTERNATIONAL ISO
STANDARD 1927-8
First edition
2012-12-01
Monolithic (unshaped) refractory
products —
Part 8:
Determination of complementary
properties
Produits réfractaires monolithiques (non façonnés) —
Partie 8: Détermination des caractéristiques complémentaires
Reference number
ISO 1927-8:2012(E)
©
ISO 2012
ISO 1927-8:2012(E)
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any
means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the
address below or ISO’s member body in the country of the requester.
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ii © ISO 2012 – All rights reserved

ISO 1927-8:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Principle . 1
4 Determination of permeability to gases . 2
4.1 Principle . 2
4.2 Test pieces . 2
4.3 Procedure . 2
5 Determination of the resistance to thermal shock . 2
5.1 Principle . 2
5.2 Test pieces . 2
5.3 Procedure . 2
6 Determination of thermal conductivity . 3
6.1 Principle . 3
6.2 Test pieces . 3
6.3 Procedure . 3
7 Determination of sulfuric acid resistance . 3
7.1 Principle . 3
7.2 Test pieces . 3
7.3 Procedure . 3
8 Tests for products containing carbon . 3
8.1 Principle . 3
8.2 Test pieces . 4
8.3 Procedure . 4
9 Determination of the resistance to carbon monoxide . 4
10 Determination of resistance to abrasion at ambient temperature .4
11 Test report . 4
ISO 1927-8:2012(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
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