EN 993-9:1997

Methods of testing dense shaped refractory products - Part 9: Determination of creep in compression

This European Standard specifies a method for determining creep in compression of dense and insulating shaped refractory products, creep being the deformation of a refractory product subjected to a constant load under isothermal conditions.

Prüfverfahren für dichte geformte feuerfeste Erzeugnisse - Teil 9: Bestimmung des Druckfließverhaltens

Diese Europäsiche Norm legt ein Verfahren zur Bestimmung des Druckfließverhaltens von dichten feuerfesten Erzeugnissen und geformten feuerfesten Erzeugnissen für Isolationßwecke fest, die einer konstanten Beanspruchung unter gleichmäßigen Temperaturbedingungen ausgesetzt sind.

Méthodes d'essai pour produits réfractaires façonnés denses - Partie 9: Détermination du fluage à la compression

La présente Norme Européenne prescrit une méthode pour la détermination du fluage à la compression des produits réfractaires façonnés denses et isolants, c'est-à-dire la déformation d'un produit réfractaire soumis à une charge constante dans des conditions d'équilibre thermique.

Metode za preskušanje gostih oblikovanih ognjevzdržnih izdelkov - 9. del: Ugotavljanje lezenja pod tlačno obremenitvijo

General Information

• Status: Published
• Publication Date: 20-May-1997
• Withdrawal Date: 29-Nov-1997
• ICS: 81.080 - Refractories
• Technical Committee: CEN/TC 187 - Refractory products and materials
• Drafting Committee: CEN/TC 187/WG 1 - Dense shaped refractory products
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 02-Nov-2022
• Completion Date: 14-Apr-2025
• Ref Project: SIST EN 993-9:1998 - Methods of testing dense shaped refractory products - Part 9: Determination of creep in compression

Overview

EN 993-9:1997 is a CEN European Standard - part 9 of the EN 993 series - that specifies a test method for the determination of creep in compression of dense and insulating shaped refractory products. The standard defines creep as the deformation of a refractory product subjected to a constant load under isothermal conditions. It is intended to provide a reproducible laboratory procedure for assessing time-dependent compressive deformation at elevated temperatures.

Key Topics

• Scope and purpose: Defines applicability to dense and insulating shaped refractories and the objective of measuring compressive creep under constant load and stable temperature.
• Test principle: Measurement of deformation produced by a sustained compressive load at a controlled, constant temperature (isothermal creep).
• Specimen handling: Requirements for representative shaped refractory samples and general preparation/conditioning to ensure consistent results.
• Test conditions: Emphasis on maintaining constant load and accurate isothermal temperature control throughout the test period.
• Deformation measurement and recording: Continuous or periodic measurement of deformation (creep) over time and clear rules for reporting results.
• Reporting requirements: Presentation of creep data, test conditions (temperature, load, duration), and any observations that affect interpretation.

Note: EN 993-9:1997 sets the method framework and reporting conventions; specific numerical test parameters (loads, times, temperatures) are selected based on material type, application, and agreement between parties.

Applications

• Quality control: Manufacturers use the method to monitor product consistency and to detect changes in time-dependent compressive behavior between production batches.
• Product development: R&D teams evaluate formulation or processing changes to reduce creep under service conditions.
• Specification and acceptance: Purchasers and specifiers include creep-in-compression test results in technical specifications and acceptance criteria for shaped refractories used in furnaces, kilns, and high-temperature installations.
• Failure analysis and lifetime assessment: Engineers and testing laboratories use measured creep data to support modelling of deformation under sustained loads and to assess risk of shape loss or structural failure in service.

Related Standards

• EN 993 series (other parts) - complementary test methods for dense shaped refractory products.
• National and international test standards for refractories and high-temperature materials (refer to relevant CEN/ISO documents as applicable).

Keywords: EN 993-9:1997, determination of creep in compression, refractory creep test, dense shaped refractory products, isothermal creep, compressive creep, CEN standard.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-1998
0HWRGH]DSUHVNXãDQMHJRVWLKREOLNRYDQLKRJQMHY]GUåQLKL]GHONRYGHO
8JRWDYOMDQMHOH]HQMDSRGWODþQRREUHPHQLWYLMR
Methods of testing dense shaped refractory products - Part 9: Determination of creep in
compression
Prüfverfahren für dichte geformte feuerfeste Erzeugnisse - Teil 9: Bestimmung des
Druckfließverhaltens
Méthodes d'essai pour produits réfractaires façonnés denses - Partie 9: Détermination
du fluage a la compression
Ta slovenski standard je istoveten z: EN 993-9:1997
ICS:
81.080 Ognjevzdržni materiali Refractories
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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