scope:

Establishes the classification and designation of dense shaped refractory products of special composition of the following series: a) oxide based products; alumina-chromic oxide; alumina-chromic oxide-zirconia-silica; zirconia-silica;alumina-zirconca-silica b) oxide and non-oxide based products; alumina-carbon; alumina-silicon carbide-carbon; c) non-oxide based products; silicon carbide; carbon; d) further special products which are only designed but not classified e.g. non-oxide products such as borides, nitrides or further combinations of the series listed above.