Constantan Wire/Strip/Bar/Foil/Ribbon Cu56ni44 220V Electric Resistance Wire for Oven Design

• Customization: Available
• Product Type: Wire
• Material: CuNi
• Model NO.: SP-OhmAlloy049
• Type: Bare
• Conductor Type: Solid
• Application: Overhead, Heating, Underground
• Sheath Material: None
• Insulation Material: None
• OEM: Available
• Transport Package: Wooden Case
• Specification: 0.06mm~8mm
• Trademark: Ohmalloy
• Origin: China
• Production Capacity: 500t/Year

Product Description

Constantan Wire/Strip/Bar/Foil/Ribbon Cu56Ni44 220v Electric Resistance Wire for Oven Design
 
(Common Name: CuNi45, NC50.Cuprothal, Alloy 294, Cuprothal 294, Nico, MWS-294, Cupron, Copel, Alloy 45, Neutrology, Advance, CuNi 102, Cu-Ni 44, Konstantan,constantan.)

OhmAlloy049 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.

OhmAlloy049 is manufactured from electrolytic copper and pure nickel. In finer wire sizes the alloy is designated as OhmAlloy49TC(Thermocouple).

Copper Nickel Alloy Heating Resistance Wire and Strip Technique Data
 

Name	Our Code	Resistance Ω at 20 °C	the maximum temperature°C
Copper-nickel--1	OhmAlloy3	0.03	200
Copper-nickel--2	OhmAlloy5	0.05	200
Copper-nickel--8	OhmAlloy12	0.12	250
Copper-nickel--10	OhmAlloy15	0.15	200
Copper-nickel--14	OhmAlloy20	0.2	300
Copper-nickel--19	OhmAlloy25	0.25	300
Copper-nickel--23	OhmAlloy30	0.35	350
Copper-nickel--30	OhmAlloy35	0.35	350
Copper-nickel--34	OhmAlloy40	0.4	350
Copper-nickel--44	OhmAlloy49	0.5	400

Copper Nickel Alloy Heating Resistance Wire Cuni8 Technique Data

Normal composition%

Nickel	45	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	16

Specific heat capacity

Temperature	20ºC
J/gK	0.41

Melting point (ºC)	1280
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
OhmAlloy049	good	bad	bad	bad	bad	good

Style of supply

Alloys Name	Type	Dimension
OhmAlloy049W	Wire	D=0.03mm~8mm
OhmAlloy049R	Ribbon	W=0.4~40	T=0.05~2.9mm
OhmAlloy049S	Strip	W=8~200mm	T=0.1~3.0
OhmAlloy049F	Foil	W=6~120mm	T=0.005~0.1
OhmAlloy049B	Bar	Dia=8~100mm	L=50~1000

Our Packing