Fiberfrax Durablanket® Z | Ceramic Fiber Mats

Fiberfrax Durablanket® Z | Ceramic Fiber Mats

Durablanket® ASW high-temperature wool insulation materials are firmly needled insulation mats made from spun Fiberfrax ASW high-temperature wool.

1400°C Classification Temp.
Ceramic fiber | Aluminum silicate wool
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: Matte (blanket)


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    Excellent handling / processing strength.

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    Heat resistance

    Resistance to temperature changes & resistance to chemicals.

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    Thermal counductivity

    Low thermal conductivity & heat storage.


    Mats (blankets) made of high temperature wool are needled lightweight mats made of ceramic (ASW/RCF) 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.


    High temperature wool made of ceramic fibers, also known as ASW (aluminum silicate wool) or RCF (Refractory Ceramic Fiber), have been used for years as the standard fiber type for insulation solutions up to 1260 ° C. Consisting of a mix of aluminum oxide (Al2O3) and silica (SiO 2)2), the fibers offer not only high temperature resistance but also good chemical and mechanical properties.

    By further refining the fiber with zirconium oxide (ZiO2), a temperature resistance of up to 1400 ° C can be achieved.


    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

    Fiber modules

    We manufacture fiber modules according to customer specifications that are designed for the insulation requirements of industrial ovens, kilns and heating devices.



    Chemical Analysis

    SiO2 52,0 - 56,0 %
    AL2O3 28,0 - 32,0 %
    ZrO2 14,0 - 18,0 %
    Alkalien < 0,25 %
    Fe2O3 + TiO2 < 0,2 %

    Physical Properties

    Colour white
    Classification Temperature (°C) 1400
    Melting point (°C) 1740
    Medium fiber diameter (My) 3,25
    Specific warmth at 1000°C (J/kgK) 1035

    linear shrinkage (% after 24h)

    1400 °C 2,7
    Density 96 kg/m³ 128 kg/m³ 160 kg/m³
    Thermal conductivity at
    800°C 0,24 W/m°K 0,19 W/m°K 0,18 W/m°K
    1000°C 0,34 W/m°K 0,27 W/m°K 0,25 W/m°K
    1200°C 0,44 W/m°K 0,36 W/m°K 0,33 W/m°K
    Tensile strength (kPa) 70 90 110


    The Fiberfrax Durablanket product group stands for needled lightweight mats made of ceramic Fiberfrax fibers and effective solutions for a wide range of thermal insulation applications. Fiberfrax Durablanket products are characterized by excellent insulating properties, high resistance to chemicals, elasticity and dimensional stability. They are exclusively inorganic and thus achieve their dimensional stability, elasticity and thermal insulation properties in many areas of application without the occurrence of smoke or vapors. They are available in a large number of density and thickness combinations and thus represent one of the most versatile product groups on the market.


    • High temperature resistance
    • Low thermal conductivity & heat storage
    • High tensile strength & elasticity
    • Thermal shock resistance & durability
          to chemicals
    • Good sound absorption
  • Downloads

    Datasheet Fiberfrax® Durablanket® Z

    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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