Research Report RR:C16-1006

    Seven participants participated in this Interlaboratory study, during which an interlaboratory test was performed on Calcium-silicate block thermal insulation (ASTM-C533, Type 1) to develop a precision statement for Test Method ASTM-C421, Tumbling Friability of Preformed Block-Type Thermal Insulation. The precision of Test Method ASTM-C421 already had been determined for rigid cellular plastic thermal insulation (RR: C16-1006), but Committee C16 required that an additional material be included in the precision statement.

    Published: August 1984

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    Related Standards

    C421-08(2014) Standard Test Method for Tumbling Friability of Preformed Block-Type and Preformed Pipe-Covering-Type Thermal Insulation


    Committee C16 on Thermal Insulation


    Subcommittee C16.32 on Mechanical Properties