Rocket subassembly

Niobium is also very much used in superalloys based on nickel and cobalt, intended for jet engine components, rocket subassemblies, and combustion equipment The important alloy Inconel 718 contains (%) 53 Ni, 19 Cr, 5 Nb and 1 Ti. 

Heat-transferring powder trains, surface coatings, and discrete subassemblies—used as fuses for fire transfer, delay timing, first fires, and rocket igniters. 

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