Ultra-Smooth Constantan Copper Nickel Resistance Foil for Etching

• Customization: Available
• Product Type: Strip
• Material: CuNi
• Model NO.: CuNi40
• Carbon Content: Low Carbon
• PCD: -
• ET: -
• Hole: -
• Resistivity: 0.49
• Density: 8.9g/cm3
• Tensil Strength: >420MPa
• Elongation: >25%
• Surface: Bright
• Shape: Strip/Wire/Ribbon/Pipe/Sheet/Bar/Foil
• Thickness: 0.005-0.1mm
• OEM: Yes
• Width: 0.5-250mm
• Transport Package: Carton, Wooden Case
• Specification: 0.02x110mm
• Trademark: Huona
• Origin: China
• HS Code: 74082900
• Production Capacity: 1000 Ton/Year

Product Description

Ultra-smooth Constantan Copper Nickel Resistance Foil For Etching

Constantan  Definition

Resistance alloy with moderate resistivity and low temperature coefficent of resistance with a flat resistance/temperature curve over a wider range than the "manganins". CuNi44 Alloy wire also shows better corrosion resistance than the man ganins. Uses tend to be restricted to ac circuits. CuNi44/ CuNi40 /CuNi45 Constantan Copper Nickel Alloy Wire is also the negative element of the type J thermocouple with Iron being the positive; type J thermocouples are used in heat treating applications. Also, it is the negative element of the type T thermocouple with OFHC Copper the positive; type T thermocouples are used at cryogenic temperatures.

Chemical Content(%)  CuNi44 

Ni	Mn	Fe	Si	Cu	Other	ROHS Directive
						Cd	Pb	Hg	Cr
44	1.50%	0.5	-	Bal	-	ND	ND	ND	ND

 Mechanical Properties CuNi44 

Max Continuous Service Temp	400 ºC
Resistivity at 20ºC	0.49 ± 5% ohm*mm2/m
Density	8.9 g/cm3
Temperature Coefficient of Resistance	< -6  ×10-6/ºC
EMF VS Cu (0~100ºC)	-43 μV/ºC
Melting Point	1280 ºC
Tensile Strength	Min 420 Mpa
Elongation	Min 25%
Micrographic Structure	Austenite
Magnetic Property	Non.

Product features:

1)Excellent anti-oxidation and mechanical strength at high temperature;

2)High resistivity and low temperature coefficient of resistance;

3)Excellent reelability and forming performance;

4)Excellent welding performace