Alkaline earth silicate fiber mat 1200 ° C


1200 ° C KFT


Alkaline earth silicate fiber


Mat (blanket)
SKU: N/A Category:

Insulation properties

Exceptional insulation properties.


Temperature resistance

High temperature resistance up to 1200 ° C.


Temperature change

High resistance to temperature changes.


Our alkaline earth silicate fiber mat 1200 ° C offers advanced physical properties, which 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 bio-persistence currently available. Our alkaline earth silicate fiber mats 1200 ° C are made from alkaline earth silicate wool (AES wool).


  • Exceptional insulation properties
  • High temperature resistance (up to 1200 ° C)
  • Resistance to temperature changes
  • High tensile strength & elasticity
  • Lightweight
  • 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 represent an effective solution for a wide range of thermal insulation applications. They are characterized by excellent insulating properties, high resistance to chemicals, elasticity and dimensional stability. They are exclusively inorganic and therefore no smoke or vapors are generated 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 that melt and then rapidly solidify a combination of silicon dioxide SiO2 and calcium oxide (CaO) with or without magnesium oxide (MgO). The fiber can be refined 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

Fiber mats are sold as roll goods as standard. The roll length depends on the selected thickness. As a standard width, we have 610mm wide rolls from stock. Double widths are available on request.


Molded parts

We manufacture molded parts according to your specifications. The roll goods are made using

  • Water jet
  • Punching
  • Plotting

brought into the right shape for you.


Fiber modules

We manufacture fiberModules which are designed for the insulation requirements of industrial furnaces, kilns 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
Colour: White
Classification temperature (° C): * 1200
Application limit temperature (° C): 1100
Melting point (° C): 1100
Mean 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

Further products

Gasser - trade in foundry and
Stahlwerksbedarf Gesellschaft mbH