ASTM D3874-20
Standard Test Method for Ignition of Materials by Hot Wire Sources

Standard No.

ASTM D3874-20

Release Date

2020

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D3874-20

Scope

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 electricallyheated wires and other heat sources.2 1.2 This test method applies to molded or sheet materials available in thicknesses up to and including 13.0 mm (0.51 in.). 1.3 This test method applies to materials that are rigid or flexible at normal room temperatures. It is important to minimize deformation during preparation, especially during the wire-wrapping step described in 10.1, by following the method outlined under Clause 10, Sample Preparation. Examples of deformation include bowing, in either a transverse or a longitudinal direction, twisting of the specimen, and indentation of the wire into the specimen during the wire-wrapping step, to a degree visible to the eye. 1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. (See SI10 for further details.) 1.5 This test method measures and describes the response of 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests. NOTE 1—Although this test method and IEC TS 60695-2-20 (withdrawn) differ in approach and in detail, data obtained using either are technically equivalent. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D3874-20 Referenced Document

• ASTM D1711 Standard Terminology Relating to Electrical Insulation
• ASTM D6194 Standard Test Method for Glow-Wire Ignition of Materials
• ASTM E176 Standard Terminology of Fire Standards
• ASTM E3020 Standard Practice for Ignition Sources*， 2022-02-01 Update
• IEEE/ASTM SI 10 American National Standard for Metric Practice
• ISO 13943 Fire safety — Vocabulary*， 2023-09-01 Update

ASTM D3874-20 history

• 2020 ASTM D3874-20 Standard Test Method for Ignition of Materials by Hot Wire Sources
• 2018 ASTM D3874-18 Standard Test Method for Ignition of Materials by Hot Wire Sources
• 2013 ASTM D3874-13 Standard Test Method for Ignition of Materials by Hot Wire Sources
• 2012 ASTM D3874-12 Standard Test Method for Ignition of Materials by Hot Wire Sources
• 2010 ASTM D3874-10 Standard Test Method for Ignition of Materials by Hot Wire Sources
• 2004 ASTM D3874-04 Standard Test Method for Ignition of Materials by Hot Wire Sources
• 2003 ASTM D3874-03 Standard Test Method for Ignition of Materials by Hot Wire Sources
• 1997 ASTM D3874-97 Standard Test Method for Ignition of Materials by Hot Wire Sources