Constantan Konstantan Wire / CuNi44 Wire resistance wire for heating

• Customization: Available
• Product Type: Wire
• Material: Copper and Nickel
• Model NO.: CuNi44(Constantan)
• Carbon Content: No
• PCD: N/A
• ET: N/A
• Hole: N/A
• Resistivity: 0.49+-5%
• Density: 8.9(g/cm3)
• Elongation: >25%
• Melting Point: 1280
• State: Annealed and Hard
• Surface: Bright
• Other Name: Nc050
• Transport Package: Spool/Coil, Carton, Wooden Case
• Specification: RoHS, ISO 9001
• Trademark: Tankii
• Origin: China
• HS Code: 7409400000
• Production Capacity: 2000 Tons/Year

Product Description

Constantan Konstantan Wire/Cuni44 Wire

Constantan Wire 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 Wire 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

1.  Condition: Bright, Annealed, Soft 
2.  Wire diameter 0.02mm-1.0mm packing in spool, big than 1.0mm packing in coil
3.  Rod, Bar diameter 1mm-30mm 
4.  Strip: Thickness 0.01mm-7mm, Width 1mm-280mm