Alumel
Alumel is an alloy consisting of approximately 95% nickel, 2% aluminum, 2% manganese, and 1% silicon. This magnetic alloy is used to make the negative conductors of ANSI Type K thermocouples and thermocouple extension wire. Alumel is a registered trademark of Concept Alloys, Inc.
| Electrical resistivity | 0.294 μΩ m |
| Temperature coefficient | 23.9×10−4 K−1 |
| Curie point | 152 °C |
| Density | 8.61 g cm−3 |
| Melting point | 1399 °C |
| Tensile strength | 586 MPa |
| Tensile strength | 1030 MPa |
| Tensile strength | 1170 MPa |
| Coefficient of thermal expansion | 12×10−6K−1 at 20 °C |
| Specific heat | 0.523 J g−1 K−1 |
| Thermal conductivity | 29.7 W m−1 K−1 |