Nickel Alloy 42 (Ni-Fe Alloy)

Annealing Procedure

Anneal at 1450F (788C) followed by air cooling.

Applications

Used for glass-to-metal sealing of components that are enclosed in a glass envelope, such as lamps and electron tubes.

Cold Workability

The alloy has good ductility and is readily cold worked.

Forgeability

Forging may be done at 2200 F. As is true of all the high nickel content alloys care should be taken to avoid contamination from sulfur due to long soaking time in a furnace atmosphere.

Formability

Ductility and thus formability are very good.

Hardening Procedure

Hardens due to cold working only.

Heat Treatability

An annealing heat treatment may be used. The alloy is not hardenable by heat treatment.

Machinability

The alloy is readily machinable by conventional techniques.

Principle Design Features

This is an iron-nickel alloy with controlled thermal expansion properties.

Weldability

The alloy may be welded by conventional methods.