Beijing North Refractories Co., Ltd.
Beijing North Refractories Co., Ltd.

Promat Calcium Silicate Boards Monalite Monolux

Oct 22 , 2025

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    Promat's range of materials, including Monolux®, Duratec®, and Monalite®, are all high-performance asbestos-free calcium silicate boards. They're widely used for high-temperature insulation, fire protection, and in industrial furnaces. While they share excellent fire resistance and thermal insulation properties, they differ significantly in density, maximum service temperature, mechanical strength, and specific applications.




    Promat Monolux® Series

    The MONOLUX® series is designed to provide medium-density, high-temperature thermal insulation and structural support.

    • Promat MONOLUX® 800

      • Features:

        • Maximum Service Temperature:        Typically 800°C (classification temperature up to 1000°C).

        • Density: Medium density, around 950 kg/m³.

        • Mechanical Strength: Good        flexural strength (e.g., approximately 6.5 MPa), maintaining strength at        high temperatures.

        • Thermal Shrinkage: Extremely low        thermal shrinkage at high temperatures, ensuring dimensional stability.

        • Machinability: Easy to machine.

        • Fire Performance: A1        non-combustible material, offering up to 240 minutes of fire protection.

      • Applications:

        • Single-layer insulation for industrial furnaces, ovens, and        dryers.

        • Rigid thermal insulation for presses.

        • Structural insulation requiring high thermal and/or        mechanical loads.




    Promat Duratec® Series

    The DURATEC® series comprises "technical ceramic" calcium silicate materials, known for their high density, exceptional mechanical strength, and electrical insulation properties.

    • Promat DURATEC® 750

      • Features:

        • Maximum Service Temperature:        Typically 1000°C.

        • Density: High density, around 1400        kg/m³.

        • Mechanical Strength: Extremely        high, with flexural strength up to 23 MPa and compressive strength up to        55 MPa. Notably, its strength is maintained or even improves at high        temperatures.

        • Electrical Properties: Excellent        electrical insulation, high arc resistance, high surface and volume        resistivity, and high resistance to tracking.

        • Machinability: Can be precisely        machined.

        • Thermal Shock Resistance: Capable        of withstanding thermal cycling without cracking or breaking.

      • Applications:

        • Component supports in the furnace industry.

        • Structural insulation in metal forming applications.

        • Electrical insulation components (e.g., arc shields in        switchgear).

        • High-strength thermal and electrical separators.

    • Promat DURATEC® 1000

      • Features:

        • Maximum Service Temperature:        Typically 1000°C.

        • Density: High density, also        typically around 1400 kg/m³.

        • Mechanical Strength: While not as        extreme as DURATEC® 750 (flexural strength around 16 MPa, compressive        strength around 31 MPa), it still maintains excellent strength at high        temperatures.

        • Thermal Shrinkage: Noted for extremely        low thermal shrinkage, ensuring outstanding dimensional stability in        high-temperature environments.

        • Electrical Properties: Also        possesses good electrical insulation characteristics.

        • Machinability: Easy to precisely        machine.

      • Applications:

        • High-temperature structural applications requiring extreme        dimensional stability.

        • Electrical and thermal insulation components.

        • Internal structures and supports within furnaces.




    Promat Monalite® Series

    The MONALITE® series consists of high-density calcium silicate boards specifically designed for aluminum casting and molten metal contact applications. They exhibit excellent non-wetting properties and thermal shock resistance.

    • Promat MONALITE® M1

      • Features:

        • Maximum Service Temperature:        Typically withstands peak temperatures up to 1000°C.

        • Density: High density, typically        between 850-970 kg/m³.

        • Non-Wetting: Not wetted by liquid        non-ferrous metals (especially aluminum), which is crucial in molten        metal contact applications.

        • Dimensional Stability: Good        dimensional stability, low shrinkage.

        • Wear Resistance: Offers some wear        resistance.

        • Machinability: Can be well        machined.

        • Thermal Shock Resistance: High        resistance to thermal shock.

      • Applications:

        • Aluminum casting and furnace industries, such as launders,        spouts, floats, and baffles.

        • Header boxes in continuous casting.

        • Sprue bushes, tubes, nozzles, and feeder box linings in        low-pressure die casting.

    • Promat MONALITE® M1-A

      • Features:

        • Maximum Service Temperature:        Typically 850°C.

        • Density: Higher density,        approximately 961 kg/m³.

        • Characteristics similar to MONALITE® M1, but often considered a variant of M1, potentially optimized        for specific performance aspects or cost.

        • Like M1, it particularly emphasizes the property of not        being wetted by molten non-ferrous metals.

      • Applications:

        • Similar to MONALITE® M1, primarily used in aluminum casting,        furnaces, and industries involving contact with molten non-ferrous        metals.




    Summary of Similarities and Differences




    Characteristic

    MONOLUX® 800

    DURATEC® 750

    DURATEC® 1000

    MONALITE® M1

    MONALITE® M1-A

    Product Series

    Thermal Insulation/Fire Protection

    Technical Ceramic/High Strength

    Technical Ceramic/High Strength

    Molten Metal Contact

    Molten Metal Contact

    Max Service Temp.

    800°C (Class. 1000°C)

    1000°C

    1000°C

    1000°C (Peak)

    850°C

    Typical Density

    950 kg/m³

    1400 kg/m³

    1400 kg/m³

    850-970 kg/m³

    961 kg/m³

    Main Advantage

    Thermal Insulation, Fire Protection,   Dimensional Stability

    Extreme Mechanical Strength, Electrical   Insulation

    Extremely Low Shrinkage, Electrical   Insulation

    Non-Wetting to Molten Metals, Thermal   Shock Resistance

    Non-Wetting to Molten Metals, Thermal   Shock Resistance

    Mechanical Strength

    Good

    Excellent

    High

    Good

    Good

    Electrical Insulation

    Not Emphasized

    Excellent

    Excellent

    Not Emphasized

    Not Emphasized

    Thermal Shrinkage

    Low

    Low

    Extremely Low

    Low

    Low

    Applicable Medium

    Air/Furnace Gases

    Air/Furnace Gases

    Air/Furnace Gases

    Molten Non-Ferrous Metals

    Molten Non-Ferrous Metals


    References
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