CuMn12Ni4 Alloy

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Introduction
Manganese copper alloy used for shunt can be used at room temperature. This alloy is characterized by low electromotive force.

Type of supply

Alloy	Type	Size
Manganin43W	Round wire	D=0.03mm~8mm
Manganin43R	Flat wire	W=0.4~40	T=0.03~2.9mm
Manganin43S	Strip	W=8~200mm	T=0.1~3.0
Manganin43F	Foil	W=6~120mm	T=0.003~0.1
Manganin43B	Rod	Dia=8~100mm	L=50~1000

Application
Manganese copper alloy is widely used in shunt resistor with high requirement, and built-in precision electrical element, like: electric bridge, potentiometer, etc.

Physical parameters

Yield strength (Mpa)

Tensile strength (Mpa)

Elongation (%)

Density (g/cm³)

Resistivity (20℃)
(Ω・mm²/m)

Resistance temperature coefficient (20℃~600℃)
10-5/℃

Conductivity (20℃)
(WmK)

Electromotive force against copper (μV/℃ ) (0~100℃)

Expansion coefficient (20 ℃- 100℃)
x10-6/K

Expansion coefficient (20 ℃- 400℃)
x10-6/K

Expansion coefficient (20 ℃- 100℃)
x10-6/K

Melting point
(℃)

Max.operating temperature (℃)

Magnetism

180

390

8.4

0.43

-7~40

＜2

19.5

0.41

960

5~45

Non-magnetism

Corrosion resistance

Atmospheric corrosion resistance at 20℃	Corrosion resistance at maximum operating temperature
	Air and other oxygen-containing gases	oxygen-containing gas	Sulfurous gas	Sulfurous gas	carburization
			(oxidizability)	(reducibility)
Good	Poor	Poor	Poor	Poor	Good

Index
alloy strip, resistance alloy