Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for materials under the trademark Kanthal®.
Manganina 43 wire is a copper-manganese-nickel alloy (CuMnNi alloy) for use at room temperature. The alloy is characterized by very low thermal electromotive force (emf) compared to copper.
Manganina 43 is typically used for the manufacturing of resistance standards, precision wire wound resistors, potentiometers, shunts and other electrical and electronic components.
The alloy's low emf vs. copper makes it ideal for use in electrical circuits, especially D.C., where a spurious thermal emf could cause malfunctioning of electronic equipment. Due to the low operating temperature, the temperature coefficient of resistance is controlled to be low over a range of 15 to 35°C (59 to 95°F)
Ni %
Mn %
Cu %
Nominal composition
4.0
11.0
Bal.
Wire size
Yield Strength
Tensile Strength
Elongation
Hardness
Ø
Rp0.2
Rm
A
mm (in)
MPa (ksi)
MPa (ksi)
%
Hv
1.00 (0.04)
180 (26)
390 (57)
30
110
Density g/cm3 (lb/in3)
8.4 (0.303)
Electrical resistivity at 20°C Ω mm2/m (Ω circ. mil/ft)
0.43 (259)
Temperature coefficient of resistance (15 - 35 °C) (x 10-6/K)
0 ± 15
Coefficient of thermal expansion
Temperature °C (°F)
Thermal Expansion x 10-6/K (10-6 /°F)
20 - 100 (68-212)
18 (10)
Thermal conductivity
Temperature °C (°F)
20 (68)
W m-1 K-1 (Btu h-1ft-1°F-1)
22 (12.7)
Specific heat capacity
Temperature °C (°F)
20 (68)
kJ kg-1 K-1 (Btu lb-1 °F-1)
0.410 (0.10)
Melting point °C (°F)
1020 (1868)
Max continuous operating temperature in air °C
Room temperature
Magnetic properties
The material is non-magnetic
Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for materials under the trademark Kanthal®.
