Alloy 52 is a nickel-iron alloy known for its excellent thermal expansion properties, high electrical resistivity, and good corrosion resistance.
Alloy 52 consists primarily of nickel (Ni) and iron (Fe), with nickel being the major component. The alloy is specifically formulated to exhibit a low and constant coefficient of thermal expansion (CTE) over a wide temperature range.
One of the notable features of Alloy 52 is its high electrical resistivity, which enables efficient electrical insulation and helps minimize unwanted electrical losses.
Alloy 52 exhibits good corrosion resistance in various environments, including atmospheric conditions, freshwater, and mild alkaline or acidic solutions. It is generally resistant to oxidation and can withstand prolonged exposure to moisture or humid environments.
Available tube product forms
Typical Applications
- Lead Frames, Connectors, Relays
- Glass-To-Metal Seals
- Hermetic Packages
- Resistance and Strain Gauges
- Integrated Circuits
- Thermostats
Typical manufacturing specifications
- ASTM F30
- DIN 17745
- Also individual customer specifications.
Industries predominantly using this grade
Technical Data
Mechanical Properties
| Tensile Strength |
690 MPa (100,000 psi) minimum |
| Yield Strength |
310 MPa (45,000 psi) minimum |
| Elongation |
15% minimum |
| Hardness |
HRB 80-90 (as annealed) |
Physical Properties
| Density |
8.25 g/cm³ |
| Melting Range |
1425-1455°C (2600-2650°F) |
| Thermal Conductivity |
12.7 W/m·K (at 20°C) |
| Electrical Resistivity |
0.84 μΩ·m (at 20°C) |
| Curie Temperature |
450°C (842°F) |
| Modulus of Elasticity |
140 GPa (20.3 x 10^6 psi) |
Chemical Composition (% by weight)
|
Element |
Min |
Max |
|
Ni |
51 |
52 |
| Fe |
Balance |
|
Cr |
- |
0.25 |