May 6, 2021 · Specific materials can be tested most appropriately by using standard ASTM test methods applicable to the specific material that define both voltage stress limits and finite electrification times as well as specimen configuration and electrode geometry.

This standard is issued under the fixed designation D257; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.

This standard is issued under the fixed designation D257; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

What is ASTM D257 Testing? ASTM D257 is a test method created by ASTM International to measure the DC resistance or conductance of insulating materials. It is a vital standard in establishing surface and volume resistivity.

Feb 23, 2025 · The ASTM D257 test standard describes direct current (DC) procedures for determining the DC insulation resistance, volume resistance, volume resistivity, surface resistance, and surface resistivity of electrical insulating materials.

Surface Resistivity, Volume Resistivity, ASTM D257, IEC 62631-3-1 Scope: Surface resistivity is the resistance to leakage current along the surface of an insulating material.

Mar 1, 2021 · Specific materials can be tested most appropriately by using standard ASTM test methods applicable to the specific material that define both voltage stress limits and finite electrification times as well as specimen configuration and electrode geometry.

Specific materials can be tested most appropriately by using standard ASTM test methods applicable to the specific material that define both voltage stress limits and finite electrification times as well as specimen configuration and electrode geometry.

Looking to make measurement in accordance with ASTM-D257 & IEC 60093/ IEC 62631-3 Standards? IEC 60993 and ASTM D-257 cover test methods for the measurement of volume resistivity and surface resistivity of insulating materials.

ASTM D257 outlines the standard methods for measuring the surface and volume resistivity of insulating materials. It provides guidelines for setting up the test, applying a voltage, and measuring the resulting current to calculate resistivity.

May 28, 2014 · Scope1.1 These test methods cover direct-current procedures for the measurement of dc insulation resistance, volume resistance, and surface resistance. From such measurements and the geometric dimensions of specimen and …

This standard is issued under the fixed designation D 257; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.

ASTM D257 is the standard method used to determine the volume resistivity of solid insulating materials. This test is essential for assessing the suitability of materials like plastics, rubbers, and ceramics in various industries, including electronics, automotive, and aerospace.

The 1888 Megohmmeter/High Resistance Meter can be used for measuring the resistivity of test samples as described by ASTM Standard D 257, which describes in detail the techniques for both surface and volume resistivity measurements.

ASTM-D257 Standard Test Methods for DC Resistance or Conductance of Insulating Materials - DC resistance; insulation resistance; surface resistance; surface resistivity; volume resistance; volume resistivity

May 15, 2007 · Specific materials can be tested most appropriately by using standard ASTM test methods applicable to the specific material that define both voltage stress limits and finite electrification times as well as specimen configuration and electrode geometry.

Sep 26, 2020 · This standard is issued under the Þxed designation D257; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

ASTM D257, Standard Test Methods for DC Resistance or Conductance of Insulating Materials. Test Voltage: 1000 V ($300/sample) at 25 C. Or any higher voltage at higher cost. Temperature: ambient temperature, or any temperature from -150 C to 1200 C. We can also test under controlled environment, vacuum, or controlled relative humidity.