This standard specifies the ordering details, classification and designation, dimensions, shape, technical requirements, test methods, inspection rules, packaging, marking, quality certificates for iron-nickel-cobalt glass sealing alloys 4J29 and 4J44 and ceramic sealing alloys 4J33, 4J34, 4J46. This standard is mainly applicable to sealed iron-nickel-cobalt alloys with permanent expansion used for mating and sealing with hard glass or ceramics in electrovacuum, semiconductor industry, and other application environments.
