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Significance and Use
This test method for the determination of magnetic rating is considered satisfactory for acceptance testing of commercial shipments of asbestos fibers, papers, felts, yarns, rovings, textile products, rigid sheet products, and granular or powdered products.
Magnetic rating is one of the measurements used for determining the suitability of an asbestos material for electrical insulation.
The electrical insulating properties of asbestos materials vary inversely with the magnetic rating. Therefore, a low magnetic iron content is required for good electrical insulating.
The types of asbestos textiles classified by magnetic rating are described in Specification D2100.
1.1 This test method covers the procedure for the determination of the magnetic rating of asbestos fiber and asbestos textile products. This test method is used primarily for testing asbestos insulating materials.
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 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
D2100 Specification for Asbestos Textiles Used for Electrical Insulating Purposes
D2590 Test Method for Sampling Chrysotile Asbestos
D2946 Terminology for Asbestos and Asbestos-Cement Products
D2947 Test Method for Screen Analysis of Asbestos Fibers
D3879 Test Method for Sampling Amphibole Asbestos
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
ICS Number Code 59.060.30 (Mineral and metal fibres)
UNSPSC Code 11151515(Asbestos fibers)