Manganina 43

StripDatasheet

Datasheet updated 2024-09-05 12:01 (supersedes all previous editions)

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 strip 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 strip is typically used for the manufacturing of resistance standards, precision strip 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 20 to 50°C (68 to 122°F)

Chemical composition

	Ni %	Mn %	Cu %
Nominal composition	4.0	11.0	Bal.

Mechanical properties

Yield Strength	Tensile Strength	Elongation	Hardness
R_p0.2	R_m	A
MPa	MPa	%	Hv
180	390	30	70–130

Physical properties

Density g/cm³	8.4
Electrical resistivity at 20°C Ω mm²/m	0.43
Temperature coefficient of resistance (20 - 50 °C) (x 10^-6/K)	0 ± 15

Coefficient of thermal expansion
Temperature °C	Thermal Expansion x 10^-6/K
20 - 100	18

Thermal conductivity
Temperature °C	20
W m^-1 K^-1	22

Specific heat capacity
Temperature °C	20
kJ kg^-1 K^-1	0.410

Melting point °C	1020
Max continuous operating temperature in air °C	Room temperature
Magnetic properties	The material is non-magnetic