
HTIWs are produced synthetically from mineral raw materials. There are some important differences between natural fibres and man-made mineral fibres. Beside the differences in the chemical composition, MMMF have parallel edges.
However, as their name suggests, HTIWs are used at much higher temperatures (typically from 600 °C to 1800 °C) than most other glass and rock wools.

High Temperature Insulation Wool is often compared to Asbestos. THIS IS WRONG!