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We received the goods, everything went fine. Perfect packaging, good product quality, good price - we are satisfied.
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The product quality is very good, beyond my expectations, the actual use of fully meet my needs, we will buy again.
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I bought low expansion alloy from Joy, She is a very responsible lady, Huona's products quality is pretty good.

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Constantan CuNi44 Copper Nickel Wire 1.0mm for Jump Wire

Place of Origin	CHINA
Brand Name	HUONA
Certification	ISO9001
Model Number	CuNi44
Minimum Order Quantity	5
Price	Bargain
Packaging Details	Spool+paper case + wooden case/plastic packing+papre case+ wooden box outside(or customized)
Delivery Time	5-21days
Payment Terms	L/C,T/T,Western Union,MoneyGram
Supply Ability	30000 KG per month

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Product Details

Name	CuNi44 Constantan Wire	Elongation	25%
Resistivity	0.49(at 20℃ (Ωmm2/m))	Conductivity	23WmK
Density	8.9g/cm3	Melting Point	1280℃
Max Continuous Operating Temperature In Air	400℃	Magnetic Properties	Non-magnetic
Highlight	cuni44 copper nickel wire , cuni44 copper nickel welding wire

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Product Description

Product brief introduction

Constantan Konstantan CuNi44 Copper Nickel wire 1.0mm for jump wire

Huona Alloys 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 Huona Alloys are temperature - stable potentiometers, industrial rheostats and electric motor starter resistances.
The combination of negligible temperature coefficient and high resistivity makes the alloy particularly suitable for the winding of precision resistors.
Huona Alloys is manufactured from electrolytic copper and pure nickel. In finer wire sizes the alloy is designated as Huona Alloys(Thermocouple).

Normal composition%

Element	Content
Nickel	45
Manganese	1
Copper	Bal.

Typical Mechanical properties (1.0mm)

Property	Value
Yield strength (Mpa)	250
Tensile Strength (Mpa)	420
Elongation (%)	25

Typical Physical properties

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

Coefficient of thermal expansion

Temperature Range	Thermal Expansion x10⁻⁶/K
20 ℃ - 400℃	15

Specific heat capacity

Temperature	Value (J/gK)
20℃	0.41

Melting point (℃)|1280|

Alloys - Working Environment Performance

Alloy Name	Working In atmosphere at 20℃	Working at max temperature 200℃ (Air and oxygen contain gases)	Working at max temperature 200℃ (gases with Nitrogen)	Working at max temperature 200℃ (gases with sulfur - oxidability)	Working at max temperature 200℃ (gases with sulfur - reductibility)	Working at max temperature 200℃ (carburization)
Huona Alloys	good	good	good	good	bad	good

Style of Supply

Alloys Name	Type	Dimension
Huona Alloys-W	Wire	D = 0.03mm~8mm
Huona Alloys-R	Ribbon	W = 0.4~40, T = 0.03~2.9mm
Huona Alloys-S	Strip	W = 8~200mm, T = 0.1~3.0
Huona Alloys-F	Foil	W = 6~120mm, T = 0.003~0.1
Huona Alloys-B	Bar	Dia = 8~100mm, L = 50~1000

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