China Supplier 0.07mm Constantan Wire (6J40/CN49W) for Wirewound Resistor

• Product Type: Wire
• Material: Cu Ni
• Carbon Content: Low Carbon
• Color: Bright
• Transport Package: Coil, Spool Woven Bag Pallet
• Trademark: ualloy
• Model NO.: CuNi44
• Origin: Hangzhou, China
• Production Capacity: 500tons/Year

Product Description

Basic Info.

Model NO.:6J40/CN49W	Product Type:Wire
Material:Copper Nickel	Carbon Content:Low Carbon
PCD:2	ET:0
Hole:0	Package:Spool, Carton, Wooden Case
Trademark:UALLOY	Origin:Hangzhou, China (Mainland)
HS Code:74082200	Production Capacity:300 Mt/Month

Product Description

Constantan Wire:
(Common Name:CuNi44,NC50.Cuprothal, Alloy 294, Cuprothal 294, Nico, MWS-294, Cupron, Copel, Alloy 45, Neutrology, Advance, CuNi 102, Cu-Ni 44, Konstantan,constantan.)

 

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 OhmAlloy49 are temperature-stable potentiometers, industrial rheostats and electric motor starter resistances.

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 CuNi44TC(Thermocouple).

 

Normal composition%

Nickel	44	Manganese	1
Copper	Bal.

Typical Mechanical properties(1.0mm)

Yield strength	Tensile Strength	Elongation
Mpa	Mpa	%
250	420	25

Typical Physical properties

Density (g/cm3)	8.9
Electrical resistivity at 20ºC (Ωmm2/m)	0.49
Temperature factor of resistivity(20ºC~600ºC)X10-5/ºC	-6
Conductivity coefficient at 20ºC (WmK)	23
EMF vs Cu(μV/ºC )(0~100ºC )	-43

Coefficient of thermal expansion

Temperature	Thermal Expansion x10-6/K
20 ºC- 400ºC	15

Specific heat capacity

Temperature	20ºC
J/gK	0.41

Melting point (ºC)

Max continuous operating temperature in air (ºC)	400
Magnetic properties	non-magnetic

Corrosion resistance performance

Alloys	Working In atmosphere at 20ºC	Working at max temperature 200ºC
		Air and oxygen contain gases	gases with Nitrogen	gases with sulfur oxidability	gases with sulfur reductibility	carburization
CuNi44	good	good	good	good	bad	good

Style of supply

Alloys Name	Type	Dimension
CuNi44W Wire	Wire	D=0.03mm~8mm
CuNi44R Ribbon	Ribbon	W=0.4~40	T=0.03~2.9mm
CuNi44S Strip	Strip	W=8~200mm	T=0.1~3.0
CuNi44F Foil	Foil	W=6~120mm	T=0.003~0.1
CuNi44B Bar	Bar	Dia=8~100mm	L=50~1000