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ASTM D4496-04e1

Historical Revision

Standard Test Method for D-C Resistance or Conductance of Moderately Conductive Materials

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1.1 This test method covers the determination of the measurement of electrical resistance or conductance of materials that are generally categorized as moderately conductive and are neither good electrical insulators nor good conductors.

1.2 Test measurements of electrical resistance (or conductance) and specimen geometry data are used to compute an electrical resistivity for the material.

1.3 This test method applies to all materials that exhibit volume resistivity in the range of 1 to 107 -cm or surface resistivity in the range of 103 to 107 (per square).

1.4 This test method is designed for measurements at standard conditions of 23C and 50 % relative humidity, but its principles of operation can be applied to specimens measured at lower or higher temperatures and relative humidities.

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 precautionary statements are given in .


This test method is useful for the comparison of materials, as a quality control test, and may be used for specification purposes.

This test method is useful in the selection and use of materials in wires, cables, bushings, high-voltage rotating machinery, and other electrical apparatus in which shielding or the distribution of voltage stress may be of value.

Commercially available moderately conductive materials frequently are comprised of both conductive and resistive components (that is, cellulose fibers with colloidal carbon black particles attached to portions of the surfaces of those fibers, or discrete conductive particles adhered to the surfaces of electrical insulating polymers). Such commercially available materials are often manufactured in a manner that may result in anisotropy with respect to electrical conduction. Hence, the significance of tests using this test method may depend upon the orientation of the specimen tested to the electric field and the relationship between this orientation and the orientation of the material in the electrical apparatus which uses these materials.

SDO ASTM: ASTM International
Document Number D4496
Publication Date Sept. 1, 2004
Language en - English
Page Count 5
Revision Level 04e1
Supercedes
Committee D09.12
Publish Date Document Id Type View
Jan. 1, 2021 D4496-21E01 Revision
Jan. 1, 2021 D4496-21 Revision
May 1, 2013 D4496-13 Revision
Sept. 1, 2004 D4496-04E01 Revision
Sept. 1, 2004 D4496-04 Revision
Jan. 1, 1998 D4496-87R98E01 Revision