ASTM WK41795

    Revision of C591 - 12b Standard Specification for Unfaced Preformed Rigid Cellular Polyisocyanurate Thermal Insulation

    (What is a Work Item?)

    Active Standard: C591 - 13

    Developed by Subcommittee: C16.22 | Committee C16 | Contact Staff Manager


    1. Rationale

    Removal of the requirement that any individual specimen thermal conductivity result cannot be greater than 110% of the requirement.


    cellular plastic; polyisocyanurate; polyurethane modified polyisocyanurate; thermal insulation;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    James Young, Jr.

    Draft Under Development