High Purity And Versatile Nickel205/N02205 Pure Nickel Wire For Extreme Environments
Nickel 205 alloy, known for its excellent mechanical properties and corrosion resistance, is a wrought nickel alloy with a composition of at least 99% nickel . It is ferromagnetic below 360°C (680°F) and contains small additions of aluminum and titanium, which contribute to its mechanical and electrical properties . The alloy is characterized by its high electrical and thermal conductivity, making it suitable for electrical components and heat exchangers . It exhibits good resistance to many corrosives, particularly hydroxides, and performs well in both reducing and oxidizing environments .
Key applications of Nickel 205 include magnetostrictive transducers, mechanical supports, transistor housings, battery cases, lead wires, and anodes and grids of electronic valves . It is also used in chemical processing for handling acids, alkalis, and chemicals, as well as in marine applications where resistance to seawater and brine solutions is required . The alloy's high resistance to caustic alkalis makes it outstanding for use up to and including the molten state . With its high nickel content and minimal impurities, Nickel 205 is a commercially pure alloy that maintains its mechanical properties over a wide range of temperatures .
Nominal Chemical Composition (%)
| Alloy |
Ni |
Mn |
Fe |
Si |
Cu |
C |
Ti |
| Ni200 |
≥ 99.2 |
≤ 0.30 |
≤ 0.20 |
≤ 0.10 |
≤ 0.20 |
≤ 0.10 |
≤ 0.10 |
| Ni201 |
≥ 99.2 |
≤ 0.30 |
≤ 0.20 |
≤ 0.10 |
≤ 0.20 |
≤ 0.05 |
≤ 0.10 |
| Ni205 |
≥ 99.6 |
≤ 0.20 |
≤ 0.20 |
≤ 0.10 |
≤ 0.10 |
≤ 0.05 |
≤ 0.05 |
Size Range
| Type |
Dia. (mm) |
Width (mm) |
Thickness (mm) |
| Wire |
0.04 - 12.0 |
- |
- |
| Ribbon |
- |
2.0 |
≥ 0.08 |
Physical Properties (at room temperature)
| Alloy |
Density (g/cm3) |
Thermal Conductivity (W/m K) |
Thermal Linear Expansion Coeff. (20-95 ℃) (10-6/K) |
Electrical Resistivity at 20 ℃ (μΩ-cm) |
| Ni200/201 |
8.89 |
70.20 |
13.3 |
9 |
| Ni205 |
8.89 |
75.00 |
13.3 |
8.9 |
Mechanical Properties (for cold drawn annealed wire)
| Alloy |
Tensile strength (N/mm2) |
Elongation (% at L0=100mm) |
| Min |
Max |
Min |
Max |
| Ni200/201 |
400 |
550 |
20 |
30 |
| Ni205 |
400 |
530 |
20 |
30 |
Some key features of Ni205 (also known as UNS N02205) include:
1. High Purity Nickel Content: Ni205 contains at least 99% nickel, making it a commercially pure wrought nickel alloy.
2. Ferromagnetic Property: The alloy is ferromagnetic below 360°C (680°F).
3. Aluminum and Titanium Additions: Small additions of aluminum and titanium enhance its mechanical and electrical properties.
4. Corrosion Resistance: Ni205 exhibits excellent resistance to corrosion in various environments, including acids, alkalis, and neutral salts.
5. Mechanical Properties: It has a tensile strength of 345 MPa (50000 psi) and a yield strength of 90 MPa (13100 psi) in the annealed condition, with an elongation at break of 45%.
6. Thermal Properties: The thermal expansion coefficient is 13.3 µm/m°C (7.39 µin/in°F) and the thermal conductivity is 75 W/mK (521 BTU.in/hrft².°F).
7. Electrical Conductivity: Ni205 has high electrical conductivity, making it suitable for electrical components.
8. Non-Heat Treatable: The alloy is not heat-treatable and may be annealed after cold working.
9. Machinability: Ni205 can be machined using high-speed tool steels.
10. Weldability: The alloy can be welded using all common welding techniques.
These features make Ni205 suitable for a wide range of applications, particularly in environments requiring high purity, corrosion resistance, and electrical conductivity.
Application:
- Aerospace Industry: Due to its ability to resist high temperatures and corrosive environments, Nickel 205 is used in aerospace components, including jet engine parts and aircraft exhaust systems.
- Chemical Processing: It is commonly used in chemical reactors, valves, piping, and other equipment exposed to corrosive chemicals, especially in industries like petrochemical and pharmaceutical manufacturing.
- Electronics: Nickel 205 is used in electrical connectors, electromagnetic shielding, and other components that require low magnetic permeability and good conductivity.
Comparison to Other Nickel Alloys:
Compared to other high-purity nickel alloys (such as Nickel 200), Nickel 205 has similar properties but may be preferred in certain applications that require slightly different characteristics, such as a higher degree of purity and better resistance to specific forms of corrosion.
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