Insulfrax® LTX™ (S) | Alkaline earth silicate fibre mats

Insulfrax® LTX™ (S) | Alkaline earth silicate fibre mats

Insulfrax ® LTX ™ | Insulfrax ® S mats are the latest addition to the Insulfrax mat range.

1200°C Classification Temp.
Alcaline Earth Silicate fiber
Mat (blanket)
Thickness (mm)
6mm | 10mm | 13mm | 19mm | 25mm | 38mm | 50mm
Density / volume weight (kg / m³)
64 kg / m³ | 96 kg / m³ | 128 kg / m³ | 60 kg / m³

Refractory Refractory

Subcategory: Fiber blankets

Tags: Mat (blanket)


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    Insulation properties

    Exceptional insulation properties.

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    Temperature resistance

    High temperature resistance up to 1200 °C.

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    Temperature change

    High resistance to temperature changes.


    Mats (blankets) made of high temperature wool are needled lightweight mats made of biosoluble (AES) high temperature wool (HTW) and provide 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 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.


    Unifrax® is one of the world's leading manufacturers of high-performance specialty fibers and inorganic materials that are used in industry, the automotive sector and fire protection. Our goals, philosophy and values build on our efforts to manufacture high quality products that help our customers save energy, reduce pollution and improve fire protection.

    Fiberfrax Durablanket® S | Ceramic Fiber Mats

    Product Variations

    Cerablanket™ | Ceramic Fibre Mats

    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.

    Cerablanket™ | Ceramic Fibre Mats


    We manufacture molded parts according to your specifications. The roll goods are shaped via:

    • Water jets
    • Punching
    • Plotting
    Cerablanket™ | Ceramic Fibre Mats

    Temperature change

    High resistance to temperature changes.



    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
    Operating Temperature (°C) 1100
    Melting point (°C) > 1330
    Medium fiber diameter (My) 4,0

    linear shrinkage (% after 24h)

    1200 °C 1,0
    Density 64 kg/m³ 96 kg/m³ 128 kg/m³ 160 kg/m³
    Thermal conductivity at
    200°C 0,06 W/m°K 0,06 W/m°K 0,05 W/m°K 0,05 W/m°K
    400°C 0,11 W/m°K 0,09 W/m°K 0,08 W/m°K 0,08 W/m°K
    600°C 0,17 W/m°K 0,14 W/m°K 0,12 W/m°K 0,11 W/m°K
    800°C 0,26 W/m°K 0,20 W/m°K 0,18 W/m°K 0,15 W/m°K
    1000°C 0,38 W/m°K 0,29 W/m°K 0,25 W/m°K 0,21 W/m°K
    Tensile strength (kPa) 45 65 85 100


    Insulfrax ® LTX ™ | Insulfrax ® S mats are the latest addition to the Insulfrax mat range. Insulfrax® LTX ™ offers the same benefits of previous Insulfrax versions, now with enhanced physical properties that increase both thermal efficiency and handling. These needled mats combine our unique know-how with proven technology to create the best Insulfrax mat with low bio-persistence currently available from Unifrax. The Insulfrax® LTX ™ mats 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
  • Downloads

    Insulfrax® LTX ™ data sheet

    Product properties, typical applications and availabilities.


    Hoffmann product catalog

    Refractory | Seals | Foundry supplies | Conveyor chains | Chesterton


  • K. Hoffmann GmbH

    K. Hoffmann GmbH

    Since 1986, K. Hoffmann GmbH has been at home as a production company in the high-temperature sector. Specializing in vermiculite as the main material, we offer board products and shaped parts as mass-produced and cost-oriented quality goods, as well as complex custom-made products for industrial and home use for thermal insulation and fire protection technology!

    As part of the SENN Group, we have access to a broad network of specialized companies and their associated experience and products, enabling us to meet every requirement!


ATTENTION - Sale to professionals only

K. Hoffmann GmbH

Your specialist for vermiculite, refractory and high-temperature resistant insulation solutions.

© K. Hoffmann GmbH

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