HT Glass Fibre
High-Temperature Insulating Fiberglass
High Temperature (HT) fiberglass is an extraordinary material, specifically designed to withstand extremely high temperatures without losing its properties.
It is a composite material, made up of very thin glass filaments, which give it exceptional heat resistance and great lightness.
Components
Characteristics
Properties
SiO2: 58%
CaO: 16%
Al2O3: 13%
B2O3: 7%
MgO: 4%
Na2O-H2O: 1%
Good stability at high temperatures
Good dimensional stability
Good mechanical strength
Low thermal conductivity
Non-combustible
Excellent flexibility
Good chemical resistance
Colour: Light blue/Blue/Grey/White
Maximum temperature: 850°C
Melting temperature: 1200°C
Fibre-filament diameter: 6-9 microns
Tensile strength – virgin filament: 3400 MPa
Young’s modulus: 74000 MPa
Thermal conductivity: 1.0 W/m °K
Reaction to fire: non-combustible
Calcination: <1.5%
Dielectric strength: 60-100 KV/mm
Solvent resistance: Good
Base resistance: Good
Acid resistance: Good
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