CuNi44 Resistance Alloy

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Introduction
CuNi44 resistance alloy has high resistivity, which contains 40% nickel and 1.5% manganese. It has low temperature coefficient of resistivity and medium resistivity of 0.48μΩ·m or 0.49μΩ·m. It can be used in a wide range of temperature with good processing and welding performances.

Type of supply

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

Application
CuNi44 resistance alloy is suitable to be used in alternating current circuit as precision resistor, slide resistor, resistance strain gauge and so on. Constantane deformable material and CuNi44 resistance alloy can also be used in thermocouple and thermocouple compensating cable material.

Main chemical composition (%)

Nickel	44	Manganese	1.5
Copper	Balance

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 ℃- 400℃) x10-6/K	Specific heat capacity (20℃) (J/g·K)	Melting point (℃)	Max.operating temperature (℃)	Magnetism
90	210	25	8.9	0.49	-6	23	-43	15	0.41	1280	400	Non magnetic

Corrosion resistance performance

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

Index
alloy strip, resistance wire