Constantan Cuprothal49 CuNi44 Flat Wire Strip Rod Cooper Nickel Alloy for Industrial Rheostats

China Constantan Cuprothal49 CuNi44 Flat Wire Strip Rod Cooper Nickel Alloy for Industrial Rheostats, Find details about China Copper Nickel Wire, Heating Resistance Wire from Constantan Cuprothal49 CuNi44 Flat Wire Strip Rod Cooper Nickel Alloy for Industrial Rheostats

Basic Info.

Model NO.

SP-CuNi44

Warrenty

3 Years

Trademark

Ohmalloy/OEM

Transport Package

Spool+Paper Carton

Specification

0.03-8mm

Origin

China

HS Code

7408290000

Model NO.

SP-CuNi44

Warrenty

3 Years

Trademark

Ohmalloy/OEM

Transport Package

Spool+Paper Carton

Specification

0.03-8mm

Origin

China

HS Code

7408290000

Product Desciption

Constantan Cuprothal49 CuNi44 Flat Wire Strip Rod Cooper Nickel Alloy for Industrial Rheostats

Constantan( Ohmalloy 049)

(Common Name: CuNi44,.Cuprothal49, Alloy 294, Cuprothal 294, Alloy 49, 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.

Copper Nickel Alloy Production Standard(GB/T1234-95)

Performance Brand		NC020 CuNi14	NC025 CuNi19	NC030 CuNi23	NC035 CuNi30	NC040 CuNi34	NC050 CuNi44
Main Chemical Content%	Ni	14.2	19	23	30	34	44
	Mn	0.3	0.5	0.5	1.0	1.0	1.0
	Cu	Bal.	Bal.	Bal.	Bal.	Bal.	Bal.
Element Max Working TemperatureºC		300	300	300	350	350	400
Density g/cm3		8.9	8.9	8.9	8.9	8.9	8.9
Resistivity Ωmm2/m, at 20ºC		0.20±5%	0.25±5%	0.30±5%	0.35±5%	0.40±5%	0.49±5%
Temperature factor of resistivity 10-5/ºC(200-600ºC)		<38	<25	<16	<10	-0	<-6
Melting Point ºC		1115	1135	1150	1170	1180	1280
Tensile Strength MPa		≥310	≥340	≥350	≥400	≥400	≥420
Enlogation%(>1.0)		≥25	≥25	≥25	≥25	≥25	≥25
EMF VS Copper V/ºC(0-100ºC)		-28	-32	-34	-37	-39	-43
Specific heat capacity j/gk(20ºC)		0.38	0.38	0.38	0.39	0.40	0.41
Conductivity coefficient w/mk at20ºC		48	38	33	27	25	23
Organizational attribute		Austenitic	Austenitic	Austenitic	Austenitic	Austenitic	Austenitic
Magnetic		None-Magnetic	None-Magnetic	None-Magnetic	None-Magnetic	None-Magnetic	None-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

good

Style of supply

Alloys Name	Type	Dimension
OhmAlloy049W	Wire	D=0.06mm~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

The addition of nickel to pure copper can significantly improve the strength, corrosion resistance, hardness, electrical resistance and thermoelectricity, and reduce the temperature coefficient of resistivity. Therefore, compared with other copper alloys, the mechanical and physical properties of cupronickel are extremely good, with good ductility, high hardness, beautiful color, corrosion resistance and deep drawing performance.

It is widely used as corrosion-resistant structural parts in shipbuilding, petroleum, chemical, construction, electric power, precision instruments, medical equipment, musical instruments and other departments. Some cupronickel has special electrical properties, which can be used to make resistance elements, thermocouple materials and compensation wires. Non-industrial cupronickel is mainly used to make decorative crafts.

Copper Nickel Alloy Wire Application

Constantan Cuprothal49 CuNi44 Flat Wire Strip Rod Cooper Nickel Alloy for Industrial Rheostats