This part of 10081 specifies the classification and designation of dense shaped refractory products of the aluminia-silica series, with the following exceptions: a) products containing more than 5 % of any metallic oxide other than aliminia, silica, iron oxide; b) products containing more than 1 % carbon, carbides, nitrides, oxynitrides or any associated materials.
DS/EN ISO 10081-1:2005 history
2005DS/EN ISO 10081-1:2005 Classification of dense shaped refractory products - Part 1: Alumina-silica