ASTM C1025-15
Standard Test Method for Modulus of Rupture in Bending of Electrode Graphite

Standard No.

ASTM C1025-15

Release Date

2015

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM C1025-15(2020)

Latest

ASTM C1025-15(2020)

Scope

4.1 This test method provides a means for determining the modulus of rupture of a square cross section graphite specimen machined from the electrode core sample obtained according to Practice C783, with a minimum core diameter of 578201;mm. This test method is recommended for quality control or quality assurance purposes, but should not be relied upon to compare materials of radically different particle sizes or orientational characteristics. For these reasons as well as those discussed in 4.2 an absolute value of flexural strength may not be obtained.

4.2 Specimen Size—The maximum particle size and maximum pore size vary greatly for manufactured graphite electrodes, generally increasing with electrode diameter. The test is on a rather short stubby beam, therefore the shear stress is not insignificant compared to the flexural stress, and the test results may not agree when a different ratio or specimen size is used.

1.1 This test method covers determination of the modulus of rupture in bending of specimens cut from graphite electrodes using a simple square cross section beam in four-point loading at room temperature.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 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.

ASTM C1025-15 Referenced Document

• ASTM C651 Standard Test Method for Flexural Strength of Manufactured Carbon and Graphite Articles Using Four-Point Loading at Room Temperature
• ASTM C783 Standard Practice for Core Sampling of Graphite Electrodes
• ASTM E4 Standard Practices for Force Verification of Testing Machines
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

ASTM C1025-15 history

• 2020 ASTM C1025-15(2020) Standard Test Method for Modulus of Rupture in Bending of Electrode Graphite
• 2015 ASTM C1025-15 Standard Test Method for Modulus of Rupture in Bending of Electrode Graphite
• 1991 ASTM C1025-91(2010)e1 Standard Test Method for Modulus of Rupture in Bending of Electrode Graphite
• 2005 ASTM C1025-91(2005) Standard Test Method for Modulus of Rupture in Bending of Electrode Graphite
• 1991 ASTM C1025-91(2000) Standard Test Method for Modulus of Rupture in Bending of Electrode Graphite