ASTM B0631-93R21
Standard Specification for Silver-Tungsten Electrical Contact Materials
| Standard number: | ASTM B0631-93R21 |
| Released: | 01.11.2021 |
| Status: | Active |
| Pages: | 4 |
| Section: | 02.04 |
| Keywords: | contacts; powder metallurgy; silver; silver-tungsten; tungsten; tungsten-silver; |
| ASTM number: | ASTM B631 |
| Supersedes: | B0631-93R16 |
This specification covers electrical contact components made from silver-tungsten by powder-metallurgical procedures. The material shall conform to composition limits specified. The material shall be finished by braze alloy backing, tumbling to polish surfaces, special surface finish, silver-rich surface layer, cleaning, etc. Chemical analysis and physical test shall be made to conform to the specified requirements.
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, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.