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Standard Guide for Silver-Tin Oxide Contact Material
Automaticky přeložený název:
Standardní příručka pro Silver-Tin Oxide kontaktního materiálu
NORMA vydána dne 1.10.2010
Označení normy: ASTM B844-98(2010)
Poznámka: NEPLATNÁ
Datum vydání normy: 1.10.2010
Kód zboží: NS-8370
Počet stran: 3
Přibližná hmotnost: 9 g (0.02 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
contact, internal oxidation, powder metallurgy, silver, silver-tin oxide, tin oxide, wrought, Internal oxidation, Powder metallurgy (P/M) materials, Silver, Silver-tin oxide, Tin oxide, Wrought silver-tin oxide materials, ICS Number Code 77.120.99 (Other non-ferrous metals and their alloys)
Significance and Use | ||||
The methods for manufacture (proprietary or otherwise) 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 guide cannot ensure performance control in the application. As part of the qualification on initial samples it is recommended that the user electrically test the materials in a functional manner for all devices applicable to the material's use. This guide 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 how to provide reasonable assurance that future lots will be similar in properties and microstructure to the initial test of sample contacts supplied. |
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1. Scope | ||||
1.1 This standard provides guidelines for users and manufacturers of silver-tin oxide material produced in strip, rod, wire, and part form for electrical contact applications. 1.2 Silver-tin oxide refers to contact material containing silver, tin oxide, and other metal oxide which may be used for either improving the processing or performance of the material. 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 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. |
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2. Referenced Documents | ||||
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