This specification establishes the properties of asbestos lap, a felted asbestos product, having a specified minimum mass % of asbestos fiber. Asbestos laps covered here are classified in two styles (Style 1 and 2) according to physical construction, five grades (Commercial, Underwriters', A, AA, AAA, and AAAA) according to mass percentage of asbestos content, and three types (Types II, IV, and VI) according to magnetic rating. Laps shall be made from a uniformly carded or otherwise felted blend of fibers. Specimens shall be sampled, prepared, tested, and conform accordingly to specified chemical composition (asbestos content), electromagnetic (magnetic rating), and dimensional (mass per unit length, and width) property requirements.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers asbestos lap, a felted asbestos product, having a minimum of 75 mass % of asbestos fiber.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3 Warning—Breathing of asbestos dust is hazardous. Asbestos and asbestos products present demonstrated health risks for users and for those with whom they come into contact. In addition to other precautions, when working with asbestos-cement products, minimize the dust that results. For information on the safe use of chrysoltile asbestos, refer to “Safe Use of Chrysotile Asbestos: A Manual on Preventive and Control Measures.”
1.4 The following safety hazards caveat pertains only to the test methods, Section 12, described in this specification: 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. For specific safety hazard, see 1.3.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D123 Terminology Relating to Textiles
D1118 Test Method for Magnetic Rating of Asbestos Fiber and Asbestos Textiles
D1918 Test Method for Asbestos Content of Asbestos Textiles
D2946 Terminology for Asbestos and Asbestos-Cement Products
asbestos; asbestos lap; classification; lap; testing;
ICS Number Code 59.060.30 (Mineral and metal fibres)
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Citing ASTM Standards
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