EN 993-12:1997
(Main)Methods of test for dense shaped refractory products - Part 12: Determination of pyrometric cone equivalent (refractoriness)
Methods of test for dense shaped refractory products - Part 12: Determination of pyrometric cone equivalent (refractoriness)
This European Standard specifies a method for determining the pyrometric cone equivalent (refractoriness) for refractory materials including shaped and unshaped products. Its useful range of application depends on the availability of suitable pyrometric reference cones. In the temperature range from 1500 °C to 1800 °C, the pyrometric reference cones specified in EN 993-13 are suitable. As pyrometric reference cones are primarily manufactured for estimating the effect of temperature on siliceous, low alumina fireclay and fireclay products, the results on materials other than these may not be as precise.
Prüfverfahren für dichte geformte feuerfeste Erzeugnisse -Teil 12: Bestimmung des Kegelfallpunktes (Feuerfestigkeit)
Diese Europäische Norm legt ein Verfahren zur Bestimmung des Kegelfallpunktes (Feuerfestigkeit) von feuerfesten sauren, halbsauren und Schamotte-Rohstoffen und Erzeugnissen fest. Der nutzbare Anwendungsbereich hängt von der Verfügbarkeit geeigneter Referenz-Brennkegek ab. Im Temperaturbereich von 1500°C bis 1800°C sind die in EN 993-13 festgelegten Referenz-Brennkegel geeignet.
Méthodes d'essai pour produit réfractaires façonnés denses -Partie 12: Détermination de la résistance pyroscopique (réfraction)
La présente norme européenne spécifie une méthode pour la détermination de la résistance pyroscopique (réfactarité) des produits et matériaux réfractaires siliceux, silico-argileux à faible teneur en alumine et silico-argileux. Le domaine d'utilisation pratique dépend des cônes pyroscopiques dont on dispose. Dans l'intervalle de température de 1500 à 1800°C, les cônes pyroscopiques définis dans l'EN 993-13 conviennent.
Metode za preskušanje gostih oblikovanih ognjevzdržnih izdelkov - 12. del: Ugotavljanje temperature zmehčišča z referenčnim pirometričnim stožcem (ognjevzdržnost)
General Information
- Status
- Published
- Publication Date
- 18-Mar-1997
- Withdrawal Date
- 29-Sep-1997
- 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
Overview
EN 993-12:1997 is a CEN European Standard that specifies a laboratory method for determining the pyrometric cone equivalent (PCE) - commonly referred to as refractoriness - of refractory materials. The method applies to both dense shaped refractory products and unshaped refractories. The standard links measurement results to the use of pyrometric reference cones, and notes that accuracy depends on availability and suitability of those cones.
Key Topics
- Scope and applicability
- Method for determining pyrometric cone equivalent (refractoriness) for shaped and unshaped refractory products.
- Emphasis on dense, shaped refractories but applicable more broadly where pyrometric cones are suitable.
- Reference cones and temperature range
- Results rely on pyrometric reference cones; EN 993-13 provides cones suitable in the 1500 °C to 1800 °C range.
- Pyrometric cones are primarily manufactured for siliceous, low-alumina fireclay and fireclay products; accuracy may decrease for other materials.
- Technical requirements (high level)
- Defines the principle of using pyrometric cones to estimate the effect of temperature on the refractory (i.e., refractoriness).
- Includes guidance on the appropriate selection and use of reference cones; users must ensure cone suitability for the material tested.
- Limitations
- Notes that PCE results for materials outside the primary cone design (non-fireclay or high-alumina refractories) may be less precise.
Applications
EN 993-12 is used where reliable, comparable measurements of refractoriness are needed:
- Quality control in refractory manufacturing - verifying product refractoriness against specifications.
- Materials selection for high-temperature linings in steelworks, foundries, cement kilns, glass furnaces and incinerators.
- Product development and R&D - comparing refractoriness among formulations.
- Procurement and specification - providing a standardized refractoriness metric for contracts and technical datasheets.
- Independent testing laboratories performing standardized refractoriness assessments.
Who should use this standard
- Refractory manufacturers and suppliers
- Quality control and materials testing laboratories
- Materials engineers and metallurgists
- Plant engineers in steel, glass, cement and other high-temperature industries
- Standards committees and specification authors
Related Standards
- EN 993-13 - specifies pyrometric reference cones suitable for the 1500 °C to 1800 °C range and is directly referenced by EN 993-12.
- Other parts of the EN 993 series cover complementary test methods for dense shaped refractory products.
Keywords: EN 993-12, pyrometric cone equivalent, refractoriness, refractory materials, pyrometric reference cones, refractories testing, EN 993-13.
Frequently Asked Questions
EN 993-12:1997 is a standard published by the European Committee for Standardization (CEN). Its full title is "Methods of test for dense shaped refractory products - Part 12: Determination of pyrometric cone equivalent (refractoriness)". This standard covers: This European Standard specifies a method for determining the pyrometric cone equivalent (refractoriness) for refractory materials including shaped and unshaped products. Its useful range of application depends on the availability of suitable pyrometric reference cones. In the temperature range from 1500 °C to 1800 °C, the pyrometric reference cones specified in EN 993-13 are suitable. As pyrometric reference cones are primarily manufactured for estimating the effect of temperature on siliceous, low alumina fireclay and fireclay products, the results on materials other than these may not be as precise.
This European Standard specifies a method for determining the pyrometric cone equivalent (refractoriness) for refractory materials including shaped and unshaped products. Its useful range of application depends on the availability of suitable pyrometric reference cones. In the temperature range from 1500 °C to 1800 °C, the pyrometric reference cones specified in EN 993-13 are suitable. As pyrometric reference cones are primarily manufactured for estimating the effect of temperature on siliceous, low alumina fireclay and fireclay products, the results on materials other than these may not be as precise.
EN 993-12:1997 is classified under the following ICS (International Classification for Standards) categories: 81.080 - Refractories. The ICS classification helps identify the subject area and facilitates finding related standards.
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Standards Content (Sample)
SLOVENSKI STANDARD
01-april-1998
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Methods of test for dense shaped refractory products - Part 12: Determination of
pyrometric cone equivalent (refractoriness)
Prüfverfahren für dichte geformte feuerfeste Erzeugnisse -Teil 12: Bestimmung des
Kegelfallpunktes (Feuerfestigkeit)
Méthodes d'essai pour produit réfractaires façonnés denses -Partie 12: Détermination de
la résistance pyroscopique (réfraction)
Ta slovenski standard je istoveten z: EN 993-12:1997
ICS:
81.080 Ognjevzdržni materiali Refractories
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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