CuNi44 Resistance Alloy Wire/Strip (CuNi40/ CuNi44Mn1 / CuNi45 / CuNi44)

• Classification: CuNi Alloy
• Resistivity: 0.49+-5%
• Density: 8.9(g/cm3)
• Elongation: >25%
• The Highest Use Temperature: 400c
• OEM: Yes
• Model NO.: CuNi40 Cuni Alloy Wire
• Sample: Free
• Surface: Bright
• Packing: Standard
• Melting Point: 1280c
• Thickness: 0.1-3mm
• Width: 5-200mm
• Transport Package: Carton, Wooden Case
• Specification: 44%Ni
• Trademark: Huona
• Origin: China
• HS Code: 74082200
• Production Capacity: 1000 Ton/Year

Product Description

CuNi44 Resistance Alloy Wire/Strip (CuNi40/ CuNi44Mn1 / CuNi45 / CuNi44)

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". 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

Constantan Tradenames:
Cuprothal, Alloy 294, Cuprothal 294, Nico, MWS-294, Cupron, Copel, Alloy 45,
Neutrology, Advance, CuNi 102, Cu-Ni 44, Konstantan
 
 Resistance Alloy- Constantan Sizes / Temper Capabilities  

Condition	Bright;Annealed; Soft
Wire	diameter 0.02mm-1.0mm packing in spool
	big than 1.0mm packing in coil
Rod	Bar diameter 1mm-30mm
Strip	Thickness 0.01mm-7mm
	Width 1mm-280mm

Resistance alloy constantan wire material:  
Constantan, CuNi1, CuNi2, CuNi6, CuNi8, CuNi10, CuNi14, CuNi19, CuNi23, CuNi30, CuNi34, CuNi40 (6J40), CuNi44. 
Characteristics
Constantan has a number of special characteristics due to which it is known as the most versatile alloy that is available.  Some of its important characteristics are:
High specific heat resistance
Negligible temperature Coefficient
Easily ductile
Resistant to atmospheric corrosion
Can be easily soldered and molded