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Standard Specification for Silver-Tungsten Electrical Contact Materials
Translate name
STANDARD published on 1.5.2016
Designation standards: ASTM B631-93(2016)
Note: WITHDRAWN
Publication date standards: 1.5.2016
SKU: NS-638210
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
contacts, powder metallurgy, silver, silver-tungsten, tungsten, tungsten-silver,, ICS Number Code 77.120.99 (Other non-ferrous metals and their alloys)
Significance and Use | ||
9.1 Proprietary methods for manufacture of these materials vary significantly among suppliers, and these methods influence such properties as arc erosion, contact resistance, and tendency to weld in service. Since the performance of contacts in a device depends on numerous factors outside the contact itself (opening speed, closing speed, contact pressure, contact bounce, environmental variations, assembly technique and variations, etc.) this specification cannot ensure performance control in the application. As part of the qualification on initial samples it is recommended that the user functionally electrically test the materials for all devices applicable to the material's use. This specification will provide a means for the contact manufacturer and contact user to reach agreement on the details of material to be supplied for a specific use and reasonable assurance that future lots will be similar in properties and microstructure to the initial test or sample contacts supplied. |
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1. Scope | ||
1.1 This specification covers electrical contact components made from silver-tungsten by powder-metallurgical procedures. 1.2 This specification covers compositions within the silver-tungsten system normally specified by users of contacts. 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 with all hazards including those identified in the appropriate Data Safety Sheet (SDS) 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. |
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2. Referenced Documents | ||
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