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ASTM D3874-04

Historical Revision

Standard Test Method for Ignition of Materials by Hot Wire Sources

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1.1 This test method is intended to differentiate, in a preliminary fashion, among materials with respect to their resistance to ignition because of their proximity to electrically-heated wires and other heat sources.

1.2 This test method applies to molded or sheet materials available in thicknesses ranging from 0.25 to 6.4 mm (0.010 to 0.25 in.).

1.3 This test method applies to materials that are rigid at normal room temperatures. That is, it applies to materials for which the specimen does not deform during preparation, especially during the wire-wrapping step described in . Examples of deformation that render this test method inapplicable include:

1.3.1 Bowing, in either a transverse or a longitudinal direction, or twisting of the specimen, during the wire-wrapping step, to a degree visible to the eye.

1.3.2 Visible indentation of the wrapped wire into the specimen.

1.4 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only. (See IEEE/ASTM SI-10 for further details.)

1.5 This test method measures and describes the response or materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.

1.6 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.

1.7 Fire testing of products and materials is inherently hazardous, and adequate safeguards for personnel and property shall be employed in conducting these tests. Fire testing involves hazardous materials, operations, and equipment.

Note 1—Although this test method and IEC 60695-2-20, differ in approach and in detail, data obtained using either are technically equivalent.


SDO ASTM: ASTM International
Document Number D3874
Publication Date Sept. 1, 2004
Language en - English
Page Count 4
Revision Level 04
Supercedes
Committee D09.21
Publish Date Document Id Type View
March 1, 2020 D3874-20 Revision
Nov. 1, 2018 D3874-18 Revision
Nov. 1, 2013 D3874-13 Revision
Jan. 1, 2012 D3874-12 Revision
March 1, 2010 D3874-10 Revision
Sept. 1, 2004 D3874-04 Revision
Oct. 1, 2003 D3874-03 Revision
Sept. 10, 1997 D3874-97 Revision