This specification covers the types, physical properties, and dimensions of cellular polypropylene intended for use as thermal insulation for temperatures from - 150 to + 240°F (-101 to + 116°C).

Formerly under the jurisdiction of Committee C16 on Thermal Insulation, this specification was withdrawn in October 2011, because the product is no longer manufactured or sold.

This specification covers the types, physical properties, and dimensions of cellular polypropylene intended for use as thermal insulation. XPP thermal insulation shall be formed by the expansion of polypropylene base resin in an extrusion process. XPP thermal insulation shall be of uniform density. The following test methods shall be performed to meet the specified requirements: conditioning and aging; dimensions and density; thermal resistance; compressive resistance; water vapor permeance; water absorption; and dimensional stability.

1.1 This specification covers the types, physical properties, and dimensions of cellular polypropylene intended for use as thermal insulation for temperatures from - 150 to + 240°F (-101 to + 116°C).

1.2 The use of thermal insulation materials covered by this specification is regulated by codes that, when adopted by an authority having jurisdiction, address fire properties for specific applications.

Note 1—Both fire properties and specific fire-test-response characteristics may be addressed by specifications, where codes or government regulations do not apply.

1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that provided for information only and are not considered standard.

1.4 The physical properties addressed by this specification are impacted by end use conditions. For design purposes, obtain physical properties from the manufacturer.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.