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Calcium Silicate (CaSil) board thickness

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  • Calcium Silicate (CaSil) board thickness

    Hi all

    After doing a little research on Casil boards I found the general rule is 2" of CaSil board. Not all Casil boards are equal in compressive strength, density and service temp. Is there a reference/link someone can point me towards in terms of CaSil board thickness needed to do the job?

    A typical Casio board would have:
    Bulk density: 220kg/m3
    Compressive strength: 0.6 MPa
    Service temp: 650?C

    And alternate could be:

    Bulk density: 975kg/m3
    Compressive strength: 11.36 MPa
    Service temp: 980?C

    Given that the second has a 4x density than the first I assume one could get away with 12mm rather than 50mm (2").
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