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Iron-Nickel-Cobalt

Interested in Nickel Iron Alloys?

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Our Iron-Nickel-Cobalt alloy is produced with expansion properties similar to glass and ceramics to enable good glass-to-metal bonding. This alloy retains good formability over a wide temperature range.

HEAT TREATMENT
Because of its effect on the actual structure of the material, there is a distinction made between heat treating the material to facilitate fabrication and heat treating the material to insure optimum conditions for glass sealing, plating or brazing.

STRESS RELIEF ANNEALING
To relieve stress and work hardening of parts at intermediate stages of fabrication. It is intended particularly for drawing, forming and spinning operations.

1. Wash and degrease parts.

2. Anneal in atmosphere controlled furnace. Atmosphere may be wet or dry hydrogen, dissociated ammonia, cracked gas or similar neutral atmosphere.

3. Annealing temperature is not critical; however, high temperatures (greater than 900°C) or extended time periods (longer than 60 minutes) should be avoided because such treatments promote grain growth.

Typical cycle 850°C for 30 minutes.

4. Parts should be held at temperature for the indicated time and then furnace cooled to less than 175°C to avoid oxidation and/or thermal shock (which may cause distortion).

The data sheet for this product is presented below:
(Click here to download our Iron-Nickel-Cobalt Data Sheet in .pdf format.)

IRON-NICKEL-COBALT ALLOY DATA SHEET


NOMINAL CHEMICAL COMPOSITION
54% Fe
29% Ni
17% Co


APPLICABLE SPECIFICATIONS
ASTM F15
DIN 1.3981


MECHANICAL PROPERTIES (typically annealed material)
Tensile
Yield
Elongation
Modulus of Elasticity
Poisson's Ratio
525 Nmm-2
345 Nmm-2
30%
140 GPa
0.317


PHYSICAL PROPERTIES
Density
Curie Temperature
Melting Point
8.36 - 8.50 gcm-3
435oC
1450oC


THERMAL PROPERTIES
Thermal Conductivity
21 Wm-1K-1


Coefficient of Expansion
Temperature Range
x 10-6K-1
Temperature Range
x 10-6K-1
30oC
to
200oC
5.5
30oC
to
600oC
7.9
30oC
to
300oC
5.1
30oC
to
700oC
9.3
30oC
to
400oC
4.9
30oC
to
800oC
10.4
30oC
to
450oC
5.3
30oC
to
900oC
11.5
30oC
to
500oC
6.2
       


ELECTRICAL PROPERTIES
Electrical Resistivity
48.9 uOhm cm


GLASS MATCHES
Kimble: EN-1 (Owens-Corning), K650, K704
Corning: 7052 or 7050, 7055, 7056, 7062 & others