ASTM-B731 Standard Specification for 60 % Palladium-40 % Silver Electrical Contact Material

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This specification covers 60% palladium-40% silver rod, wire, strip, and sheet material for electrical contacts. The material shall be finished by different methods like cold working, heat treatment or annealing, turning, grinding, and pickling. Materials shall conform to the requirements for chemical composition. Mechanical properties like ultimate tensile strength, elongation, and microhardness shall be determined.





1.1 This specification covers 60 % palladium-40 % silver rod, wire, strip, and sheet material for electrical contacts.

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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 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.


clad materials; contact material; palladium alloy; precious metal; silver alloy; Electrical contact materials--specifications; Electrical contact materials (silver alloy); Palladium alloy electrical contact materials--specifications; Silver (electrical/electronic applications)--specifications; Silver-palladium electrical contact alloy; 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


Revision Level

1996 R12 EDITION



Modification Type


Publication Date

May 31, 2012

Document Type


Page Count

2 pages

Committee Number