CuNi6 Resistance Alloy

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Introduction
CuNi6 resistance alloy is a kind of copper nickel binary alloy with low temperature coefficient of resistance and a maximum operating temperature of 250°C. This alloy is mainly used to manufacture low voltage circuit breaker, low temperature electric blanket, thermal cutout and other low voltage electrical devices. It is also used to produce heating cable for home electric blanket.

Type of supply

Type	Size
Round wire	D=0.06mm~8mm
Flat wire	W=0.4~40mm	T=0.05~2.9mm
Strip	W=8~200mm	T=0.1~3.0mm
Foil	W=6~120mm	T=0.005~0.1mm
Rod	Dia=8~100mm	L=50~1000mm

Main chemical composition (%)

Nickel	6	Manganese	-
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

110

250

8.9

0.1

＜60

―18

17.5

0.380

1095

220

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	Poor	Poor	Poor	Poor	Good

Index
alloy strip, resistance wire

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