Nickel 270* Specification
*Trade name of Special Metals Group of Companies
- W.NR 2.4050
- UNS N02270
- AWS 074
Applicable Standards:
- -
A high purity grade of nickel that is made by powder metallurgy.
Applications include:
- Electrical Resistance Thermometers
- Various other electrical
and electronic applications
| Approximate Chemical Composition | |
| Ni | 99.9% min |
| Properties | ||
| DENSITY | 8.89 g/cm3 | 0.321 lb/in3 |
| MELTING POINT | 1454oC | 2650oF |
| COEFFICIENT OF EXPANSION | 13.3 µm/m °C (20 - 100°C) |
7.4 x 10-6 in/in
°F (70 - 212°F) |
| MODULUS OF RIGIDITY | 82 kN/mm2 | 11893 ksi |
| MODULUS OF ELASTICITY | 207 kN/mm2 | 30000 ksi |
| ELECTRICAL RESISTIVITY | |
| 7.5 μW • cm | 45 ohm • circ mil/ft |
| THERMAL CONDUCTIVITY | |
| 86 W/m • oC | 595 btu • in/ft2 • h • oF |
| CONDITION | APPROX TENSILE STRENGTH | APPROX SERVICE TEMPERATURE | |
| Annealed | 300 - 450 N/mm2 | 44 - 65 ksi |
Tensile strength and elongation drop significantly at
temperatures above 315°C (600°F). Service temperature is dependent on environment, load and size range. |
| Hard Drawn | 600 - 800 N/mm2 | 87 - 116 ksi | |
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