EN 993-12:1997

Methods of test for dense shaped refractory products - Part 12: Determination of pyrometric cone equivalent (refractoriness) EN 993-12:1997

Publication date:   Sep 24, 2004

General information

90.93 Standard confirmed   Nov 2, 2022


CEN/TC 187 Refractory products and materials

European Norm

81.080   Refractories



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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.

Life cycle


EN 993-12:1997
90.93 Standard confirmed
Nov 2, 2022