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Description of ASTM-C421 2008ASTM C421 - 08Standard Test Method for Tumbling Friability of Preformed Block-Type and Preformed Pipe-Covering-Type Thermal InsulationActive Standard ASTM C421 | Developed by Subcommittee: C16.32 Book of Standards Volume: 04.06 ASTM C421Significance and Use
Several test methods for measuring mass loss by abrasion and impact of preformed block-type and preformed pipe-covering-type thermal insulation have been used previously. It is believed that no single test method completely covers all factors involving such forces for different kinds of materials, but this test method is intended to provide a procedure that gives reproducible results. It is used for comparing the mass loss by tumbling before and after a specific treatment of the insulation, as agreed upon by the purchaser and the manufacturer. 1. Scope
1.1 This test method covers determination of the mass loss of preformed block-type and preformed pipe-covering-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. - ASTM Standards C168 Terminology Relating to Thermal Insulation C302 Test Method for Density and Dimensions of Preformed Pipe-Covering-Type Thermal Insulation C303 Test Method for Dimensions and Density of Preformed Block and Board-Type Thermal Insulation Keywords mass loss; thermal insulating materials block/ ICS Code ICS Number Code 27.220 (Heat recovery. Thermal insulation) DOI: 10.1520/C0421-08 ASTM International is a member of CrossRef. ASTM C421This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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