ASTM C657

Standard Test Method for D-C Volume Resistivity of Glass

Surface and volume electrical resistivity of glass are determined by DC, as well as by AC methods. Specimen dimensions and electrode configuration are determined on an individual basis.

Room Temperature: $270 per specimen (call for feasibility)
200°C to 1200°C: $800 per specimen plus $155 per high temperature point
800°C to 1600°C: $1000 per specimen plus $155 per high temperature point

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1. SCOPE

1.1 This test method covers the determination of the dc volume resistivity of a smooth, preferably polished, glass by measuring the resistance to passage of a small amount of direct current through the glass at a voltage high enough to assure adequate sensitivity. This current must be measured under steady-state conditions that is neither a charging current nor a space-charge, buildup polarization current.

1.2 This test method is intended for the determination of resistivities less than 1016 Ω·cm in the temperature range from 25°C to the annealing point of the glass.

 

COPYRIGHT NOTICE

Extracted, with permission, from ASTM D257 Standard Test Methods for DC Resistance or Conductance of Insulating Materials, copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. A copy of the standard may be purchased from ASTM International, phone 610-832-9555, e-mail: service@astm.org, website: www.astm.org.

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