EN 820-2:2003
(Main)Advanced technical ceramics - Methods of testing monolithic ceramics - Thermo-mechanical properties - Part 2: Determination of self-loaded deformation
Advanced technical ceramics - Methods of testing monolithic ceramics - Thermo-mechanical properties - Part 2: Determination of self-loaded deformation
This European Standard specifies a method for the determination of the temperature at which the self-loaded deformation of a ceramic test piece commences and the extent of this deformation.
Hochleistungskeramik - Prüfverfahren für monolithische Keramik - Thermomechanische Eigenschaften - Teil 2: Bestimmung der Verformung unter Eigengewicht
Diese Internationale Norm legt ein Verfahren zur chemischen Analyse von feuerfesten Erzeugnissen und Werkstoffen sowie oxidischer technischer Keramik fest und schließt die Bestimmung von Massenanteilen an Oxiden zwischen 0,01 % und 99 % durch die Röntgenfluoreszenzanalyse (RFA) an Schmelzaufschlüssen ein.
ANMERKUNG Bestandteile mit Massenanteilen größer als 99 % (bezogen auf die getrocknete Substanz) sollten als Differenz angegeben werden, vorausgesetzt, alle wahrscheinlichen Nebenbestandteile und die Massenänderung durch Glühen wurden ermittelt. Auch diese Angaben sollten durch direkte Bestimmungen geprüft werden.
Céramiques techniques avancées - Méthodes d'essai pour céramiques monolithiques - Propriétés thermo-mécaniques - Partie 2: Détermination de la déformation sous son propre poids
La présente partie de cette Norme européenne spécifie une méthode de détermination de température à laquelle commence la déformation sous son propre poids d'une éprouvette en céramique, ainsi que l'importance de cette déformation.
Advanced technical ceramics - Methods of test for monolithic ceramics - Thermo-mechanical properties - Part 2: Determination of self-loaded deformation
General Information
- Status
- Published
- Publication Date
- 01-Apr-2003
- Technical Committee
- CEN/TC 184 - Advanced technical ceramics
- Drafting Committee
- CEN/TC 184 - Advanced technical ceramics
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 01-Apr-2025
- Completion Date
- 14-Apr-2025
Relations
- Effective Date
- 22-Dec-2008
Overview
EN 820-2:2003 is a European Standard developed by CEN that defines a precise method for assessing the thermo-mechanical behavior of advanced technical ceramics. Specifically, it focuses on the determination of self-loaded deformation, which is the deformation that monolithic ceramic test pieces undergo solely due to their own weight when exposed to elevated temperatures. This standard establishes a reliable procedure to identify the temperature at which such deformation begins and to measure its extent.
This test method is crucial for determining the upper use temperature of ceramic components, ensuring their structural integrity and performance in high-temperature applications. EN 820-2:2003 supports manufacturers and engineers in quality control, material selection, and product design by providing a consistent approach to evaluating thermo-mechanical stability.
Key Topics
Scope and Purpose
The standard specifies how to measure the temperature threshold where self-loaded deformation in ceramics initiates, and quantifies the deformation magnitude after thermal exposure.Test Principle
Test bars supported only at their ends are heated incrementally. Deformation caused by the bar’s own weight is monitored via a precision dial gauge. The starting temperature of noticeable deformation is recorded.Apparatus Requirements
- Measurement gauge with 0.01 mm accuracy
- Steel bar with tightly controlled dimensions for calibration
- Laboratory furnace capable of uniform temperature up to 1600 °C ± 5 °C
- Refractory supports compatible with test material to avoid contamination
- Thermocouples (type R, S, or B) for accurate temperature control
Test Piece Specifications
Rectangular bars with defined length (173–177 mm), width (11.5–12.5 mm), and thickness (3.9–4.1 mm). Flatness and parallelism tolerances are tightly controlled to ensure test consistency.Testing Procedure
- Marking test pieces for precise positioning
- Initial deformation measurement before thermal exposure
- Controlled heating at 300 °C/hour to target temperatures
- 1-hour soak at each test temperature
- Cooling to room temperature and re-measurement
- Calculation of deformation by difference
- Repetition at incremental temperatures to define deformation onset
Interferences and Considerations
The standard addresses factors such as oxidation, residual stress relief, and permanent density changes that may affect measurements. Adequate testing is recommended to differentiate true self-loaded deformation from other effects.Test Reporting
Reports must include detailed information such as laboratory identification, test conditions, material descriptions, deformation values, temperatures, and graphical presentation of results.
Applications
EN 820-2:2003 serves vital roles across industries where monolithic technical ceramics are used in high-temperature environments:
Furnace Components:
Ensures that ceramic parts maintain shape and functionality during thermal cycling and steady exposure to heat loads.Aerospace and Automotive:
Validates ceramic substrates and components in engines or exhaust systems where self-weight deformation could compromise performance or safety.Electronics and Energy:
Assesses ceramic materials in devices subject to elevated temperatures, such as insulators and heat exchangers.Research and Development:
Helps in developing new ceramic formulations with enhanced high-temperature stability by providing standardized performance metrics.
By applying EN 820-2, engineers can reliably select ceramics that maintain their structural integrity, minimizing failures caused by deformation under self-load at operational temperatures.
Related Standards
EN 820-2:2003 is part of a comprehensive testing framework for advanced ceramics under the EN 820 series:
- EN 820-1: Determination of flexural strength at elevated temperatures
- EN 820-3: Determination of resistance to thermal shock by water quenching
- EN 820-4: Determination of flexural creep deformation at elevated temperatures
Additional relevant standards supporting this methodology include:
- EN 60584-1: Thermocouples – Reference tables ensuring accurate temperature measurement
- EN ISO/IEC 17025: General requirements for testing laboratory competence and calibration
- ENV 1006: Guidance on sampling and selection of ceramic test pieces
These interrelated standards together establish a robust testing ecosystem for characterizing the thermo-mechanical properties of advanced ceramics.
Keywords: EN 820-2:2003, advanced technical ceramics, monolithic ceramics, self-loaded deformation, thermo-mechanical properties, ceramic testing methods, high-temperature deformation, ceramic test pieces, temperature of deformation onset, flexural deformation, ceramic material testing, furnace materials, CEN standards.
Frequently Asked Questions
EN 820-2:2003 is a standard published by the European Committee for Standardization (CEN). Its full title is "Advanced technical ceramics - Methods of testing monolithic ceramics - Thermo-mechanical properties - Part 2: Determination of self-loaded deformation". This standard covers: This European Standard specifies a method for the determination of the temperature at which the self-loaded deformation of a ceramic test piece commences and the extent of this deformation.
This European Standard specifies a method for the determination of the temperature at which the self-loaded deformation of a ceramic test piece commences and the extent of this deformation.
EN 820-2:2003 is classified under the following ICS (International Classification for Standards) categories: 81.060.99 - Other standards related to ceramics. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 820-2:2003 has the following relationships with other standards: It is inter standard links to ENV 820-2:1992. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 820-2:2003 is associated with the following European legislation: Standardization Mandates: M/BC/CEN/90/4. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase EN 820-2:2003 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2004
1DGRPHãþD
SIST ENV 820-1:2000
SIST ENV 820-2:2000
Advanced technical ceramics - Methods of test for monolithic ceramics - Thermo-
mechanical properties - Part 2: Determination of self-loaded deformation
Advanced technical ceramics - Methods of testing monolithic ceramics - Thermo-
mechanical properties - Part 2: Determination of self-loaded deformation
Hochleistungskeramik - Prüfverfahren für monolithische Keramik - Thermomechanische
Eigenschaften - Teil 2: Bestimmung der Verformung unter Eigengewicht
Céramiques techniques avancées - Méthodes d'essai pour céramiques monolithiques -
Propriétés thermo-mécaniques - Partie 2: Détermination de la déformation sous son
propre poids
Ta slovenski standard je istoveten z: EN 820-2:2003
ICS:
81.060.30 Sodobna keramika Advanced ceramics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 820-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2003
ICS 81.060.30 Supersedes ENV 820-2:1992
English version
Advanced technical ceramics - Methods of testing monolithic
ceramics - Thermo-mechanical properties - Part 2:
Determination of self-loaded deformation
Céramiques techniques avancées - Méthodes d'essai pour Hochleistungskeramik - Prüfverfahren für monolithische
céramiques monolithiques - Propriétés thermo-mécaniques Keramik - Thermomechanische Eigenschaften - Teil 2:
- Partie 2: Détermination de la déformation sous son propre Bestimmung der Verformung unter Eigengewicht
poids
This European Standard was approved by CEN on 2 January 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 820-2:2003 E
worldwide for CEN national Members.
Contents
page
Foreword.3
1 Scope .4
2 Normative references .4
3 Term and definition.4
4 Principle.4
5 Apparatus .4
6 Test pieces.5
7 Procedure .5
7.1 Setting up of measurement gauge.5
7.2 Marking of the test pieces.5
7.3 Measurement of test pieces before heat treatment.5
7.4 Heat treatment of test pieces.5
7.5 Measurement of the test pieces after heat treatment .6
7.6 Calculation of deformation .6
8 Determination of the temperature of commencement of self-loaded deformation.6
8.1 Determination.6
8.2 Limits.6
9 Interferences.7
10 Test report .7
Foreword
This document (EN 820-2:2003) has been prepared by Technical Committee CEN/TC 184 "Advanced technical
ceramics", the secretariat of which is held by BSI.
This document shall be given the status of a national standard, either by publication of an identical text or by
endorsement, at the latest by October 2003, and conflicting national standards shall be withdrawn at the latest by
October 2003.
This document supersedes ENV 820-2:1992.
EN 820 Advanced technical ceramics – Methods of testing monolithic ceramics – Thermo-mechanical properties
consists of four parts:
Part 1: Determination of flexural strength at elevated temperatures
Part 2: Determination of self-loaded deformation
Part 3: Determination resistance to thermal shock by water quenching
Part 4: Determination of flexural creep deformation at elevated temperatures
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,
Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
1 Scope
This European Standard specifies a method for the determination of the temperature at which the self-loaded
deformation of a ceramic test piece commences and the extent of this deformation.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 60584-1, Thermocouples - Part 1: Reference tables (IEC 60584-1:1995).
EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories (ISO/IEC
17025:1999).
ENV 1006, Advanced technical ceramics - Methods of testing monolithic ceramics - Guidance on the sampling and
selection of test pieces.
3 Term and definition
For the purposes of this European Standard the following term and definition applies.
3.1
self-loaded deformation
the property induced by heat, which results in a ceramic body being readily deformed under its own weight
4 Principle
The method involves determining whether or not test bars supported only at their ends deform at a series of
temperatures, recording any self-loaded deformation observed, and recording the results graphically. The
temperature of commencement of self-loaded deformation, taken from the graph, is reported.
This test is intended as a simple method of determining the upper use temperature of ceramic components in a
self-loaded condition. The criterion is an upper limit of fl
...
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