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ASTM C831-98

Historical Revision

Standard Test Methods for Residual Carbon, Apparent Residual Carbon, and Apparent Carbon Yield in Coked Carbon-Containing Brick and Shapes

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1.1 These test methods cover the determination of residual carbon content in carbon-bearing brick and shapes after a prescribed coking treatment. They provide two procedures. The first procedure is based on the combustion of carbon and its measurement as carbon dioxide. However, when using the first procedure for articles that contain silicon carbide or other carbides, no distinction will be made between carbon present in the form of a carbide and carbon present as elemental carbon. The second procedure provides a method for calculating apparent residual carbon (on the basis of weight loss after igniting the coked specimens), apparent carbonaceous material content, and apparent carbon yield. If the second procedure is used for brick or shapes that contain metallic additives or carbides, it must be recognized that there will be a weight gain associated with the oxidation of the metals, or carbides, or both. Such a weight gain can change the results substantially and this must be kept in mind when interpreting the data.

1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

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.


SDO ASTM: ASTM International
Document Number C831
Publication Date March 10, 1998
Language en - English
Page Count 7
Revision Level 98
Supercedes
Committee C08.04
Publish Date Document Id Type View
Feb. 1, 2018 C0831-18 Revision
Nov. 1, 2017 C0831-98R17E01 Revision
March 10, 1998 C0831-98 Revision
Nov. 1, 2023 C0831-18R23 Reaffirmation
Nov. 1, 2017 C0831-98R17 Reaffirmation
April 1, 2013 C0831-98R13 Reaffirmation
March 1, 2008 C0831-98R08 Reaffirmation
Nov. 1, 2003 C0831-98R03 Reaffirmation