SIST EN ISO 4255:2025
(Main)Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical properties of ceramic composites at high temperature - Determination of uniaxial tensile properties of tubes (ISO 4255:2025)
Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical properties of ceramic composites at high temperature - Determination of uniaxial tensile properties of tubes (ISO 4255:2025)
This document specifies the conditions for determination of the axial tensile properties of ceramic matrix composite (CMC) tubes with continuous fibre-reinforcement at elevated temperature in air, vacuum and inert gas atmospheres. The applicability of this document is specific to tubular geometries because fibre architecture and specimen geometry factors in composite tubes are distinctly different from those in flat specimens.
This document provides information on the axial tensile properties and stress-strain response in temperature, such as axial tensile strength, axial tensile strain at failure and elastic constants. The information can be used for material development, control of manufacturing (quality insurance), material comparison, characterization, reliability and design data generation for tubular components.
This document addresses, but is not restricted to, various suggested test piece fabrication methods. This document is primarily applicable to ceramic matrix composite tubes with a continuous fibrous-reinforcement: unidirectional (1D, filament winding and tape lay-up), bi-directional (2D, braid and weave) and multi-directional (xD, with x > 2), tested along the tube axis.
Hochleistungskeramik - Mechanische Eigenschaften von keramischen Verbundwerkstoffen bei hoher Temperatur - Bestimmung der uniaxialen Zugeigenschaften von Rohren (ISO 4255:2025)
Céramiques techniques - Propriétés mécaniques des composites céramiques à haute température - Détermination des propriétés en traction axiale de tubes (ISO 4255:2025)
Le présent document spécifie les conditions de détermination des propriétés en traction axiale de tubes composites à matrice céramique (CMC) avec renfort de fibres continues à température élevée sous air, sous vide et dans les atmosphères de gaz inerte. L’applicabilité du présent document est spécifique aux composites à matrice céramique tubulaire dont la géométrie est étroitement liée à la nature de l’architecture fibreuse différente de celles d’éprouvettes planes.
Le présent document donne des informations sur les propriétés en traction axiale et la réponse contrainte-déformation en fonction de la température, comme la résistance et la déformation en traction axiale à rupture et les constantes élastiques. Les informations peuvent être utilisées pour le développement de matériaux, le contrôle de fabrication (assurance qualité), la comparaison de matériaux, la caractérisation, ou encore pour la production de données fiables pour le dimensionnement et la conception de composants tubulaires.
Le présent document traite, sans s’y limiter, de pièces pouvant être élaborées par différentes voies. Le présent document est principalement applicable aux tubes composites à matrice céramique avec renfort de fibres continues unidirectionnel (enroulement filamentaire et disposition en bande 1D), bidirectionnel (tressage et tissage 2D) et multidirectionnel (xD, avec x > 2), soumis à l’essai suivant l’axe du tube.
Fina keramika (sodobna keramika, sodobna tehnična keramika) - Mehanske lastnosti keramičnih kompozitov pri visoki temperaturi - Ugotavljanje enoosnih nateznih lastnosti cevi (ISO 4255:2025)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2025
Fina keramika (sodobna keramika, sodobna tehnična keramika) - Mehanske
lastnosti keramičnih kompozitov pri visoki temperaturi - Ugotavljanje enoosnih
nateznih lastnosti cevi (ISO 4255:2025)
Fine ceramics (advanced ceramics, advanced technical ceramics) - Mechanical
properties of ceramic composites at high temperature - Determination of uniaxial tensile
properties of tubes (ISO 4255:2025)
Hochleistungskeramik - Mechanische Eigenschaften von keramischen
Verbundwerkstoffen bei hoher Temperatur - Bestimmung der uniaxialen
Zugeigenschaften von Rohren (ISO 4255:2025)
Céramiques techniques - Propriétés mécaniques des composites céramiques à haute
température - Détermination des propriétés en traction axiale de tubes (ISO 4255:2025)
Ta slovenski standard je istoveten z: EN ISO 4255:2025
ICS:
81.060.30 Sodobna keramika Advanced ceramics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 4255
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2025
EUROPÄISCHE NORM
ICS 81.060.30
English Version
Fine ceramics (advanced ceramics, advanced technical
ceramics) - Mechanical properties of ceramic composites
at high temperature - Determination of uniaxial tensile
properties of tubes (ISO 4255:2025)
Céramiques techniques - Propriétés mécaniques des Hochleistungskeramik - Mechanische Eigenschaften
composites céramiques à haute température - von keramischen Verbundwerkstoffen bei hoher
Détermination des propriétés en traction axiale de Temperatur - Bestimmung der uniaxialen
tubes (ISO 4255:2025) Zugeigenschaften von Rohren (ISO 4255:2025)
This European Standard was approved by CEN on 7 February 2025.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4255:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 4255:2025) has been prepared by Technical Committee ISO/TC 206 "Fine
ceramics " in collaboration with Technical Committee CEN/TC 184 “Advanced technical ceramics” the
secretariat of which is held by DIN.
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 January 2026, and conflicting national standards shall
be withdrawn at the latest by January 2026.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 4255:2025 has been approved by CEN as EN ISO 4255:2025 without any modification.
International
Standard
ISO 4255
First edition
Fine ceramics (advanced ceramics,
2025-07
advanced technical ceramics) —
Mechanical properties of ceramic
composites at high temperature
— Determination of axial tensile
properties of tubes
Céramiques techniques — Propriétés mécaniques des composites
céramiques à haute température — Détermination des propriétés
en traction axiale de tubes
Reference number
ISO 4255:2025(en) © ISO 2025
ISO 4255:2025(en)
© ISO 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
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Published in Switzerland
ii
ISO 4255:2025(en)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Principle . 4
5 Apparatus . 5
5.1 Testing machine . .5
5.2 Gripping system . .5
5.2.1 Test specimen gripping.5
5.2.2 Location and temperature of grips .5
5.2.3 Load train couplers .6
5.3 Test chamber and heating set-up .6
5.4 Heating apparatus .7
5.5 Strain measurement .7
5.5.1 General .7
5.5.2 Extensometers.7
5.5.3 Digital image correlation .8
5.6 Temperature measurement devices .8
5.7 Data recording system .8
5.8 Dimension-measuring devices .9
6 Tubular test specimen . 9
6.1 Specimen specifications .9
6.1.1 General .9
6.1.2 Dimension .9
6.1.3 Geometry commonly used .9
6.1.4 Tolerances and variability .11
6.2 Specimen preparation .11
6.2.1 General .11
6.2.2 As-fabricated .11
6.2.3 Application-matched machining .11
6.2.4 Customary practices . 12
6.2.5 Standard procedure . . . 12
6.3 End collars and alignment issue . 12
6.4 Test count and test specimens sampling .14
7 Test procedure . 14
7.1 Temperature considerations .14
7.1.1 General .14
7.1.2 Controlled temperature zone .14
7.1.3 Temperature measurement .14
7.2 Test set-up: other considerations .14
7.3 Testing technique .
...
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