Standard Historical Last Updated: Dec 14, 2017 Track Document
ASTM D1676-03(2011)

Standard Test Methods for Film-Insulated Magnet Wire

Standard Test Methods for Film-Insulated Magnet Wire D1676-03R11 ASTM|D1676-03R11|en-US Standard Test Methods for Film-Insulated Magnet Wire Standard new BOS Vol. 10.01 Committee D09
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Significance and Use

Bond strength values obtained by flexural tests can provide information with regard to the bond strength of a particular self-bonding outer coating in combination with a particular round film-insulated magnet wire when measured under conditions described in this test method.


1.1 These test methods cover procedures for testing film-insulated magnet wire that is used in electrical apparatus. These test methods are intended primarily for the evaluation of the electrical insulating materials used. The intent is that these test methods be used, except where modified, by individual specifications for particular applications.

1.2 These test methods present different procedures for evaluating given properties of round, rectangular or square, copper or aluminum film-insulated magnet wire.

1.3 The values stated in inch-pound units are the standard. The SI units in parentheses are provided for information only.

1.4 The test methods appear in the following sections:

Bond Strength 4-12
Burnout (AC Overload Resistance)13-21
Chemical Resistance22-28
Coefficient of Friction29-37
Continuity, DC High Voltage38-45
Continuity, DC Low Voltage46-53
Completeness of Cure54-60
Cut-Through Temperature (Thermoplastic Flow)61-68
Dielectric Breakdown AC Voltage69-75
Dielectric Breakdown    AC   Voltage after Bending76-82
Dielectric Breakdown AC Voltage at Elevated Temperatures83-89
Dielectric Breakdown AC Voltage after Conditioning in Refrigerant Atmosphere90-99
Dimensional Measurement100-106
Dissipation Factor Measurement107-114
Electrical Resistance115-121
Extractables, Refrigerant130-140
Film Adherence and Flexibility141-148
a) Elastic Ratio152
b) Low Stress Elongation153
c) Spring Back154-155
Heat Shock156-162
Scrape Resistance, Unidirectional170-177
Resistance to Insulating Liquids and Hydrolytic Stability186-195

1.5 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. Specific hazard statements are given in 9.5, 19.1, 19.3, 19.8, 52.1, 58, 59.1, 74.1, 112.1, 135.4, and 182.3.

Note 1—This test method is related to IEC 60851. Since both methods contain multiple test procedures, many procedures are technically equivalent while others differ significantly.

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Book of Standards Volume: 10.01
Developed by Subcommittee: D09.12
Pages: 35
DOI: 10.1520/D1676-03R11
ICS Code: 29.060.10