copper nickel Alloy Constantan Cupro-Nickel CuNi44 Strip/Foil/Ribbon

• Customization: Available
• Product Type: Wire
• Material: CuNi Alloy
• Model NO.: Constantan foil
• Carbon Content: None
• PCD: 380Min
• ET: 0
• Hole: 0
• Serves: Small Oreder Accepted
• Sample: Sample Available
• surface: bright
• standard: GB/ASTM/JIS/BIS/DIN
• density: 8.9g/cm3
• Elongation: 25%
• purity: 44%Ni
• State: Soft 1/4hard 1/2hard hard T-hard
• OEM: Yes
• Transport Package: Coil Cartons, Pallet, Spools, Coils
• Specification: 0.01-3mm*0.3-600mm
• Trademark: TANKII
• Origin: China
• HS Code: 7409400000
• Production Capacity: 2000 Tons/Year

Product Description

copper nickel Alloy Constantan Cupro-Nickel CuNi44 Strip/Foil/Ribbon

Constantan As a big manufacturer and exporter in China on the line of electric resistance alloy, we can supply all kinds of electric resistance alloy wire and strips (resistance steel wire and strips),
Material: CuNi1, CuNi2, CuNi6, CuNi8, CuNi14, CuNi19, CuNi23, CuNi30, CuNi34, CuNi44.

CuNi44, also called Constantan, has a very low temperature coefficient, high electrical resistance, high ductility and non-corroding properties. It is suitable for use at temperatures up to 600° C (1110° F). As a very malleable, very ductile alloy, it has a very good resistance to oxidation.

The alloy is non-magnetic. It is suitable for electrical resistors, potentiometers, heating wires, heating cables and mats. Ribbons are used for heating of bimetals. Another field of application is manufacturing of thermocouples because it develops a high electromotive force (EMF) in association with others metals.

Chemical Content, %:

Ni	Mn	Fe	Si	Cu	Other	ROHS Directive
						Cd	Pb	Hg	Cr
44	1%	0.5	-	Bal	-	ND	ND	ND	ND

 
Mechanical Properties:

Max Continuous Service Temp	400ºC
Resisivity at 20ºC	0.49±5%ohm mm2/m
Density	8.9 g/cm3
Thermal Conductivity	-6(Max)
Melting Point	1280ºC
Tensile Strength,N/mm2   Annealed,Soft	340~535 Mpa
Tensile Strength,N/mm3   Cold Rolled	680~1070 Mpa
Elongation(anneal)	25%(Min)
Elongation(cold rolled)	≥Min)2%(Min)
EMF vs Cu, μV/ºC (0~100ºC)	-43
Micrographic Structure	austenite
Magnetic Property	Non

 
Application of Constantan:

Constantan is a copper-nickel alloy that contains specific minor amounts of additional elements to achieve precise values for the temperature coefficient of resistivity. Careful control of melting and conversion practices results in a very low level of pinholes        at  ultra-thin thicknesses. The alloy is used extensively for foil resistors and strain gauges.