Alkaline earth silicate fibre mat 1200°C


Alkaline earth silicate fibre


Mat (Blanket)
SKU: N/A Category:

Insulating properties

Exceptional insulating properties.


temperature resistance

High temperature resistance up to 1200 °C.


Temperature change

High thermal shock resistance.


Our 1200°C alkaline earth silicate fiber mat offers advanced physical properties that both increase thermal efficiency and improve handling. These needled mats combine our unique know-how with proven technology to produce the best alkaline earth silicate fiber mat with low biopersistence currently available. Our 1200°C alkaline earth silicate fiber mats are made from alkaline earth silicate (AES) wool.


  • Exceptional insulating properties
  • High temperature resistance (up to 1200 °C)
  • Thermal shock resistance
  • High tensile strength & elasticity
  • Light weight
  • Excellent flexibility
  • Good sound insulation


Mats (Blankets) made of high temperature wool are needled lightweight mats made of ceramic (ASW/RCF) or biosoluble (AES) high temperature wool (HTW) and provide an effective solution for a wide range of thermal insulation applications. They feature excellent insulating properties, high resistance to chemicals, elasticity and dimensional stability. They are exclusively inorganic and therefore do not generate smoke or fumes when exposed to heat. They are available in a wide range of densities and thickness combinations, making them one of the most versatile product groups on the market.


Alkaline earth silicate fiber high temperature wool (AES Alkaline Earth Silicate Wool) consist of a mix of amorphous fibers, which are melted and then rapidly solidified using a combination of silica SiO2 and calcium oxide (CaO) with or without magnesium oxide (MgO). The fiber can be obtained by refining with other additives or a change in the material mix (addition of zirconium oxide (ZrO2) have a temperature resistance of up to 1260 ° C.

Product variations


Roll goods

Fibre mats are sold as standard in rolls. The roll length depends on the selected thickness. As standard width we have 610mm wide rolls in stock. Double widths are available on request.


Moulded parts

We manufacture moulded parts according to your specifications. In the process, the roll material is

  • Waterjet
  • Punch
  • Plot

into the right shape for you.

KS_Fiber modules

Fiber modules

We manufacture according to customer specifications fiberModules designed to meet the insulation requirements of industrial furnaces, ovens and heaters.


Chemical analysis 
SiO2: 61,0 – 67,0
CaO: 27,0 – 33,0
MgO: 2,5 – 6,5
Al2O3 <1,0
Fe2O3  <0,6


Physical properties
Color: White
Classification temperature (°C): * 1200
Application limit temperature (°C): 1100
Melting point (°C): 1100
Average fiber diameter (μm) 4,0


Permanent linear shrinkage (%) after 24 hours
1200 °C: 1,0
Volume weight (kg/m³) 64 96 128 160
Thermal conductivity (W/mK)
200 °C 0,06 0,06 0,05 0,05
400 °C 0,11 0,09 0,08 0,08
600 °C 0,17 0,14 0,12 0,11
800 °C 0,26 0,20 0,18 0,15
1000 °C 0,38 0,29 0,25 0,21
Tensile strength (kPa) 45 65 85 100

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