Nickel and nickel alloys · Alloy 270 / Nickel 270 / UNS N02270 / 2.4050
Nickel Alloy 270 (UNS N02270): Technical Datasheet and Applications
Technical Datasheet for Alloy 270 (UNS N02270) Nickel
| Supply form | Alloy designation | ASTM specifications | Equivalents |
|---|---|---|---|
| Rods, wire, strips, foil | Alloy 270, Nickel 270, UNS N02270 | ASTM | W.Nr. |
| Rods, wire, strips, foil | Alloy 270, Nickel 270, UNS N02270 | F1, F2, F3, F239 | 2.4050 |
| Rods, wire, strips, foil | Alloy 270, Nickel 270, UNS N02270 | F1, F2, F3, F239 | 2.4050 |
| 2.4050 |
Nickel grade Alloy 270 (also known as UNS N02270 and W.Nr. 2.4050), which is a complete equivalent to the Russian NP1 grade according to GOST 492-2006, is a commercially pure nickel (>99.9%) produced using powder metallurgy technology. The ultra-low impurity content gives the material unique electrical characteristics, high ductility, and excellent corrosion resistance, making it indispensable for critically important high-tech applications.
Chemical composition of Alloy 270, % by mass
| Ni | >99.9 |
|---|---|
| Cu | <0.01 |
| Mn | <0.003 |
| C | <0.02 |
| Si | <0.005 |
| S | <0.003 |
| Ti | <0.005 |
| Mg | <0.005 |
| Fe | <0.05 |
Mechanical properties of Nickel 270 in the annealed state
| Tensile strength | Yield strength (0.2% offset) | Elongation, min. |
|---|---|---|
| 50 ksi | 16 ksi | 50 % |
| 345 MPa | 110 MPa | 50 % |
Fundamental physical properties
The density of Nickel 270 under standard conditions (20 °C) is 8.91 g/cm3.
Thermophysical and electromagnetic parameters of alloy UNS N02270
| Melting range | Specific heat capacity | Magnetic properties | Modulus of elasticity | Coefficient of thermal expansion | Thermal conductivity | Electrical resistivity |
|---|---|---|---|---|---|---|
| 2650 °F | 0.110 Btu/lb*°F | Ferromagnetic | 205 kN/mm2 | 7.4*10-6 in/in*°F | 595 Btu*in/ft2*h*°F | 45 ohm*circ mil/ft |
| 1454 °C | 460 J/kg*°C | Ferromagnetic | 205 kN/mm2 | 13.3 µm/m*°C | 86 W/m*°C | 0.075 µohm*m |
The exceptional purity of the Nickel 270 alloy ensures its outstanding formability and low hardness. This guarantees excellent weldability by all standard industrial methods, including gas tungsten arc, plasma, and electron beam welding, as well as excellent machinability in the annealed state.
Key operational characteristics of the material define its demand in the following industrial sectors:
- Production of anodes and cathodes for vacuum electronics and cathode ray tubes.
- Manufacturing of electrodes for electroforming and chemical power sources.
- Creation of high-sensitivity elements for industrial resistance thermometers.
- Components for specialized lighting equipment.
EV Group China supplies rolled metal products from Alloy 270 in a wide assortment: precision strips, thin foil, sheets, as well as wire and rods of various cross-sections (round, square).
Products manufactured from this alloy according to ASTM standards:
- ASTM F1 — Nickel strip for electronic tube components.
- ASTM F3 — Strip for manufacturing parts of vacuum electronic devices.
- ASTM F239 — Cathode assemblies and their components for electronic systems.