Alumel is an alloy consisting of approximately 95% nickel, 2% aluminium, 2% manganese, and 1% silicon. This magnetic alloy is used to make the negative conductors of ANSI Type K (chromel-alumel) thermocouples and thermocouple extension wire. Alumel is a registered trademark of Concept Alloys, Inc.Concept Alloys, Inc. Intellectual Property retrieved 12 April 2016
+Properties of Alumel (95% Ni, 2% Al, 2% Mn, 1% Si) 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 (annealed) 586 MPa Tensile strength (stress relieved) 1030 MPa Tensile strength (hard) 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
References
External links Application guide and material properties of thermocouple wires (via Omega Engineering, Inc).