IBSL

Promat Duratec materials are "technical ceramics" made from calcium silicate, it acts as a high quality asbestos replacement board.  They are formulated without the use of asbestos fibres, and are thermally and electrically insulating materials for high temperature insulation use. Duratec is available in two different grades Duratec 750 which exhibits higher strength and Duratec 1000 exhibits low shrinkage.

Mechanical Properties	Duratec 1000
Nominal Density	1400kg/m3
Flexural Strength	16MPa
Compressive Strength at 10% compaction	31MPa
Maximum Service Temperature	1000°C
Thermal Conductivity	0.37W/mK

Performance
Thermal properties - Non-combustible and free of organic constituents; service temperature 1000°C; thermal conductivity decreases with increasing temperature.
Electrical properties - High arc resistance; high surface and volume resistivity; high track resistance.
Mechanical/Chemical properties - High strength over the full temperature range; Machinable to close tolerances; high chemical stability in alkaline media; reactive in acid media; can be impregnated to become hydrophobic.