
4J42 Invar Nickel Ferrous Precision Alloy Strip/ Foil/ Tape for Industrial Application
Introduction :
Alloy 42 is a 41% nickel-iron controlled expansion alloy which has
been used in a wide variety of glass-to-metal sealing applications.
While the expansion properties of this alloy most closely match
1075 glass, it has also been used in seals for the 0120 and 0010
glasses. It may also be used with hard glasses if a thin edged
tubular seal is used. For seals that are not hydrogen annealed
prior to sealing, a variation of this alloy containing small
additions fo titanium, Glass Sealing 42 Gas-Free, has been used to
promote gas-free sealing characteristics.
Application
Alloy 42 has been used for the glass-to-metal seals in electronic tubes, automotive and industrial lamps, transformer and capacitor bushings and other glass-to-metal and ceramic-to-metal applications.
Other Name: Nickel alloy 42, Invar 42, Nilo 42, Pernifer 42, Werkstoff Nr. 1.3917, UNS K94100
FeNi alloy | Chinese YB/T5235-93 |
4J42 | FeNi42 |
4J50 | FeNi50 |
4J52 | FeNi52 |