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This specification covers asbestos textile materials used for electrical insulating purposes having a specified minimum mass % of asbestos fiber, excluding the mass of other inorganic reinforcing material that may be present. Asbestos textiles are classified into three types (Types II, IV, and VI) according to magnetic rating, and into grades (Underwriters, A, AA, AAA, and AAAA) according to the percentage of asbestos content by mass. Textile materials shall meet chemical composition (asbestos content) and magnetic rating specific to their grade and type.
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.
Significance and Use
1.1 This specification covers asbestos textile materials used for electrical insulating purposes having a minimum of 80% asbestos fiber, by mass, excluding the mass of other inorganic reinforcing material that may be present.
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 10, 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
D299 Specification for Asbestos Yarns
D315 Specification for Woven Asbestos Tape
D375 Specification for Asbestos Roving
D1061 Specification for Asbestos Lap
D1118 Test Method for Magnetic Rating of Asbestos Fiber and Asbestos Textiles
D1571 Specification for Woven Asbestos Cloth
D1918 Test Method for Asbestos Content of Asbestos Textiles
D2946 Terminology for Asbestos and Asbestos-Cement Products
ICS Number Code 29.035.30 (Glass and ceramic insulating materials)
UNSPSC Code 11151515(Asbestos fibers)