90.93 Standard confirmed Nov 2, 2022
CEN
CEN/TC 187 Refractory products and materials
European Norm
81.080 Refractories
Published
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.
PUBLISHED
EN 993-12:1997
90.93
Standard confirmed
Nov 2, 2022