Nickel 270
UNS N02270
Description
Nickel 270 is a high purity grade of nickel made by powder metallurgy, which is essentially free from non-metallic inclusions. The alloy has high ductility and a low base hardness and thus the properties permit heavy cold deformation without reannealing. Its extreme purity is useful for components of hydrogen thyratrons and it is also used for electrical resistance thermometers.
Chemical Component
| Ni + Co | Mg | Ti | C | Mn | S | Si | Cu | Fe |
|---|---|---|---|---|---|---|---|---|
| 99.9% min | 0.005% max | 0.005% max | 0.02% max | 0.003% max | 0.003% max | 0.005% max | 0.01% max | 0.05% max |
Basic Information
| Items | Nickel 270 |
|---|---|
| Catalog | ACMA-Ni-A035 |
| Density | 0.322 lb/in3 (8.91 g/cm3) |
| Electrical Resistivity | 45.0 ohm-cir-mil/ft (0.075 µohm·m) |
| Specific Heat | 0.110 BTU/lb-°F (460 J/g-°K) |
| Thermal Conductivity | 595 BTU-in/hr-ft2-°F (86 W/m·-°C) |
| Mean Coefficient of Thermal Expansion | 70-200 °F (20-95 °C): 7.4 µin/in-°F (13.3 µm/m-°C) |
| Modulus of Elasticity | 30 x 103 KSI (207 x 10 3 MPa) in tension |
| Magnetic Permeability | Ferromagnetic |
| Melting Range | 2650 °F (1454 °C) |
Material Forms
Alfa Chemistry offers Nickel 270 in a variety of forms, including
- Strip
- Coil
- Foil
- Wire
Mechanical Properties
| Properties | Ultimate Tensile Strength | Yield Strength | Elongation | Hardness |
|---|---|---|---|---|
| Annealed | 50 KSI min (345MPa min) | 16 KSI min (110 MPa min ) | 50 % min | Rb 66 max: gauges ≥ 0.010 inches |
Additional Properties
Machinability: May be machined by conventional means, although the alloy is soft and "gummy". High-speed-steel tooling with very positive rake angle is recommended.
Forming: Easily formed by conventional means.
Welding: May be welded by conventional means. Note that the good thermal conductivity of this material means that welding heat will dissipate from the immediate weld area.
Heat Treatment: Nickel 270 is non hardenable by heat treatment.
Forging: The alloy may be forged at temperatures of 1900 °F to 1300 °F.
Specifications
Strip, Coil, Foil & Wire: ASTM F3
Applications
Nickel 270 can be used in a variety of applications, including:
- Hydrogen thyatron components
- Electrical resistance thermometers
- Platter bars
- Passive cathode
- Fluorescent lamp components
- Electrolytic cell anodes
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
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