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ASTM B692-90(2006)

Historical Reaffirmation

Standard Specification for 75 % Silver-25 % Graphite Sliding Contact Material

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1.1 This specification defines the criteria for composition and other requirements for brushes with a nominal silver content of 75 weight % with the balance being substantially graphite.

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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.


This specification defines the criteria for the chemical composition and other requirements (including physical properties, microstructure, superficial hardness, and specific resistance ) for silver-graphite brushes for sliding electrical contacts. The percentage of silver, graphite, ash in graphite, and total metal impurities are prescribed. The minimum acceptable values for the physical properties such as density, determined by measurement and weight method, and shear strength are given. Typical Rockwell hardness and specific resistance for the material are also specified.


SDO ASTM: ASTM International
Document Number B692
Publication Date June 1, 2006
Language en - English
Page Count 2
Revision Level 90(2006)
Supercedes
Committee B02.05
Publish Date Document Id Type View
Nov. 1, 2018 B0692-18 Revision
April 1, 2023 B0692-18R23 Reaffirmation
May 1, 2012 B0692-90R12 Reaffirmation
June 1, 2006 B0692-90R06 Reaffirmation
Jan. 1, 2000 B0692-90R00 Reaffirmation