Cuni44 CU-NI-Mn Copper Nickel Alloy resistance Constantan Strip

• Customization: Available
• Color: Silver
• Shape: strip
• Model NO.: Cuni44
• Surface Treatment: Polishing
• Type: Ni-base corrosion resistant alloy
• Serves: Small Oreder Accepted
• Sample Free: Available
• surface: Bright
• thickness: 0.02mm -3.0mm
• width: 1.0mm Min.
• Resistivity: 0.49 ohm*mm2/m
• Density: 8.9 g/cm3
• Product Type: Strip
• PCD: 100mm
• Material: Cuni Alloy Strip
• Carbon Content: None
• ET: No
• Hole: No
• Transport Package: Coil Cartons, Pallet, Spools, Coils
• Specification: 0.02-3.0mm
• Trademark: TANKII
• Origin: China
• HS Code: 7409400000
• Production Capacity: 2000 Tons/Year

Product Description

 

Cuni44 CU-NI-Mn Copper Nickel Alloy resistance Constantan Strip  
(Common Name:Constantan CuNi44,NC50.Cuprothal, Alloy 294, Cuprothal 294, Nico, MWS-294, Cupron, Copel, Alloy 45, Neutrology, Advance, CuNi 102, Cu-Ni 44, Konstantan,)
 
Cuni44 is a copper-nickel alloy (Cu56Ni44 alloy) characterized by high electrical resistance, high ductility and good corrosion resistance. It is suitable for use at temperatures up to 400°C
Typical applications for CuNi44 are temperature-stable potentiometers, industrial rheostats,electric motor starter resistances and strain gauge.
The combination of negligible temperature coefficient and high resistivity makes the alloy particulary suitable for the winding of precision resistors.
CuNi44 is manufactured from electrolytic copper and pure nickel. In finer wire sizes the alloy is designated as Cuni45(Thermocouple).
Product Description

Constantan Strip with moderate resistivity and low temperature coefficent of resistance with a flat resistance/temperature curve over a wider range than the "manganins". Constantan also shows better corrosion resistance than the man ganins. Uses tend to be restricted to ac circuits.

Constantan 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, %

Ni	Mn	Fe	Si	Cu	Other	ROHS Directive
						Cd	Pb	Hg	Cr
44	1.50%	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