1.1 This guide provides suggested methods for users and producers of electrical contact materials to specify the chemical compositions of these materials. ASTM standarder
ASTM
Nonferrous Metals--Nickel, Cobalt, Lead, Tin, Zinc, Cadmium, Precious, Reactive, Refractory Metals and Alloys; Materials for Thermostats, Electrical Heating and Resistance Contacts, and Connectors (ASTM VOL 02.04)
98.002.04