ASTM B540-21

Die Annotation des Normtextes ASTM B540-21 :

This specification covers an alloy containing palladium, silver, copper, gold, platinum, and zinc in the form of wire, rod, and strip for electrical contacts. The material shall be finished by such operations: cold working, heat treating, annealing, turning, grinding, and pickling. Material shall meet the requirements of chemical composition as specified. Knoop hardness test and tension test shall be made to conform to the specified requirements. Chemical analysis shall be performed by spectrochemical or wet analysis methods.


Keywords:
contact, electrical contact material, palladium alloy, precious metal,, ICS Number Code 77.120.99 (Other non-ferrous metals and their alloys)