Nickel Alloy 52 (Ni-Fe Alloy)

Annealing Procedure

See "Heat Treat".

Applications

Employed in a variety of glass to metal sealing applications with soft glass and ceramics.

Cold Workability

The alloy is readily cold worked. Deep drawing grade should be specified for that forming operation and annealed grade for general forming.

Forgeability

Forging should be done at a temperature of 2150 F.

Formability

The alloy has good ductility and can be formed by standard means.

Heat Treatability

Alloy 52 should be annealed at 1500F followed by air cooling. Intermediate strain relieving can be performed at 1000F.

Machinability

The alloy is similar to the austenitic (300 series) stainless steels in machining behavior. Sulfur containing cutting oils should be avoided as they may contaminate the alloy. A "Free-machining" grade is available for high production runs involving machining from bar stock.

Principle Design Features

Alloy 52 is one of the glass to metal sealing alloys designed for use with a variety of soft glasses. Known for a coefficient of thermal expansion that is almost constant up to 1050F (565 C).

Tempering Procedure

See "Heat Treat" for strain relief anneal.

Weldability

Welding by conventional methods is appropriate for this alloy.