ASTM-B664 Historical Revision Information
Standard Specification for 80 % Silver-20 % Graphite Sliding Contact Material

ASTM-B664 - 1990 R12 EDITION - SUPERSEDED
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This specification defines the criteria for composition and other requirements for sliding contact materials or brushes with a nominal composition by weight of 20% silver and 80% graphite. Materials shall adhere to specified requirements for chemical composition, density, shear strength, and microstructure. They shall also conform to typical values of Rockwell superficial hardness and specific resistance.

ORDER

Scope

1.1 This specification defines the criteria for composition and other requirements for brushes with a nominal silver content of 80 %, by weight, with the balance being substantially graphite.

1.2 The values stated in inch-pound 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 become familiar will 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.

Keywords

electrical contacts; graphite; silver; sliding contacts; Electrical contact materials (silver alloy); Electrical contact materials (sliding contacts); Silver (electrical/electronic applications)--specifications; Silver-graphite electrical contact alloy; Sliding electrical contacts; ICS Number Code 77.120.99 (Other non-ferrous metals and their alloys)

To find similar documents by ASTM Volume:

02.04 (Nonferrous Metals--Nickel, Cobalt, Lead, Tin, Zinc, Cadmium, Precious, Reactive, Refractory Metals and Alloys; Materials for Thermostats, Electrical Heating and Resistance Contacts, and Connectors)

To find similar documents by classification:

77.120.99 (Other non-ferrous metals and their alloys)

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Document Number

ASTM-B664-90(2012)

Revision Level

1990 R12 EDITION

Status

Superseded

Modification Type

Reapproval

Publication Date

May 15, 2012

Document Type

Specification

Page Count

2 pages

Committee Number

B02.05