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ASTM C421-95

Historical Revision

Standard Test Method for Tumbling Friability of Preformed Block-Type and Preformed Pipe-Covering-Type Thermal Insulation

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1.1 This test method covers determination of the mass loss of preformed block-type thermal insulation as a result of a combination of abrasion and impact produced by a laboratory tumbling mechanism.

1.2 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are provided for information only.

1.3 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.


SDO ASTM: ASTM International
Document Number C421
Publication Date Oct. 10, 2000
Language en - English
Page Count 2
Revision Level 95
Supercedes
Committee C16.32
Publish Date Document Id Type View
April 15, 2008 C0421-08 Revision
Aug. 1, 2005 C0421-05 Revision
Oct. 10, 2000 C0421-95 Revision
Oct. 10, 2000 C0421-00 Revision
March 1, 2020 C0421-08R20 Reaffirmation
April 1, 2014 C0421-08R14 Reaffirmation