Huona (Shanghai) New Material Co., Ltd.

China,Shanghai ,Shanghai
Verified Supplier

Chat online Now



Leave a Message

we will call you back quickly!

Submit Requirement

Home>
Copper Nickel Alloy>
CuNi44 Constantan Solid Round Wire, 0.80mm Diameter High Stability Copper-Nickel

China CuNi44 Constantan Solid Round Wire, 0.80mm Diameter High Stability Copper-Nickel





CuNi44 Constantan Solid Round Wire, 0.80mm Diameter High Stability Copper-Nickel

MOQ： 5KG
Price： Negotiable
Get Latest Price


Delivery Time	5-21 days
Operating Temperature	-60°C ~ 400°C (Dry Industrial Atmosphere)
Custom Diameter Range	0.05mm ~ 3.0mm
Alloy Grade	CuNi44 Constantan (56Cu / 44Ni)
Surface Treatment	Stress-Relief Bright Annealed, Mirror Polished, Burr-Free
Payment Terms	L/C,T/T,Western Union
Temperature Coefficient of Resistance	Near-zero low drift within -60°C ~ 400°C
Standard Diameter	0.80mm
Nominal Resistivity	0.48 µΩ·m (20°C Reference)
Packaging Details	Carton/Wooden Case
Supply Ability	500 tons per month
Processing Performance	High ductility, tight winding capable, no fracture after repeated bending
Certification	ISO 9001
Brand Name	Huona
Place of Origin	Shanghai
Model Number	CuNi44

View Detail Information

Inquiry by Email Get Latest Price

Chat online Now Ask for best deal

Explore similar products

1μm C1100 Ultra-thin Rolled Copper Foil New Energy

Chat online Now
Copper Nickel Zinc Strip C7521 C7701 C7541 Alloy

Chat online Now
CuNi44 NC050 Foil High-Performance Nickel-Copper Alloy for Electrical &

Chat online Now
CuNi44 Flat Wire (ASTM C71500/DIN CuNi44) Nickel-Copper Alloy for Electrical

Chat online Now

Product Details
Company Details

Product Specification


Delivery Time	5-21 days	Operating Temperature	-60°C ~ 400°C (Dry Industrial Atmosphere)
Custom Diameter Range	0.05mm ~ 3.0mm	Alloy Grade	CuNi44 Constantan (56Cu / 44Ni)
Surface Treatment	Stress-Relief Bright Annealed, Mirror Polished, Burr-Free	Payment Terms	L/C,T/T,Western Union
Temperature Coefficient of Resistance	Near-zero low drift within -60°C ~ 400°C	Standard Diameter	0.80mm
Nominal Resistivity	0.48 µΩ·m (20°C Reference)	Packaging Details	Carton/Wooden Case
Supply Ability	500 tons per month	Processing Performance	High ductility, tight winding capable, no fracture after repeated bending
Certification	ISO 9001	Brand Name	Huona
Place of Origin	Shanghai	Model Number	CuNi44

Product Overview

This premium CuNi44 constantan round wire is manufactured by Huona with strictly controlled copper-nickel 56/44 alloy ratio, designed for precision electrical resistance components and thermocouple negative conductor manufacturing. Produced via multi-pass fine drawing and uniform stress-relief bright annealing processes, this solid round wire delivers ultra-consistent resistivity, low temperature coefficient of resistance, smooth burr-free metallic surface and outstanding ductility. Tightly wound on heavy-duty large black industrial plastic spools as shown in the picture, it supports long-length continuous unwinding, perfectly suited for resistor winding, strain gauge fabrication, and pairing with iron or nickel-chromium alloys to form standard temperature sensing thermocouple assemblies.

Core Specifications

Product Name: CuNi44 High Stability Constantan Solid Round Wire

Conductor Material: CuNi44 (56% Copper + 44% Nickel Constantan Alloy)

Processing Technology: Multi-pass precision wire drawing + full stress-relief bright annealing + surface finishing

Standard Specification: 0.80mm Nominal Diameter

Customizable Size Range: Diameter 0.05mm – 3.0mm

Surface Condition: Bright polished silver metallic surface, uniform roundness, free of burrs, scratches and oxidation spots

Electrical Performance: Stable volume resistivity, ultra-low temperature resistance drift across wide temperature bands

Operating Temperature Range: -60°C ~ 400°C (continuous stable operation under dry atmospheric environments)

Standards Compliance: IEC 60584, GB/T 6149, RoHS 2.0, REACH environmental compliance standards

Key Differentiating Advantages

1. Precise 56Cu-44Ni Alloy Composition for Ultra-Stable Resistivity

This CuNi44 wire adopts accurately proportioned copper and nickel raw materials with strict impurity limitation during smelting. The balanced alloy microstructure achieves an extremely low temperature coefficient of resistance, maintaining nearly consistent electrical resistance value as ambient temperature fluctuates. Batch-to-batch alloy consistency eliminates resistance deviation during mass winding of precision resistors and sensing components.

2. Excellent Thermoelectric Matching Performance for Thermocouple Pairs

CuNi44 constantan serves as the standard negative leg for Type J and Type T thermocouple systems. It features predictable, linear thermoelectric voltage output when paired with iron or copper positive conductors, delivering reliable repeatable temperature signal transmission for industrial temperature probes and thermal measurement equipment.

3. Superior Ductility & Uniform Roundness for Precision Winding

Stress-relief annealing removes internal drawing residual stress, granting the wire outstanding softness and bending resistance. It withstands tight small-radius winding, fine coiling and micro-cutting without springback, fracture or diameter deformation. Consistent circular cross-section ensures even winding tension and uniform resistance distribution across finished resistor coils.

4. Large Spool Long-Length Packaging Boosts Production Efficiency

The wire is wound onto heavy-duty large-capacity black plastic spools with huge continuous length per reel, minimizing splicing breaks during automated winding production lines. The smooth polished surface prevents abrasion during high-speed unwinding, while marked spool hubs allow clear specification identification for warehouse management and batch tracking.

5. Reliable Anti-Corrosion & Long-Term Electrical Stability

CuNi44 alloy exhibits decent resistance against dry air oxidation and mild atmospheric erosion. It maintains stable mechanical and electrical properties under long-duration cyclic temperature changes, resisting performance aging to extend the service life of resistive elements and temperature sensing wires in general industrial environments.

Technical Specifications Table

Attribute	Typical Specification
Alloy Grade	CuNi44 Constantan (56Cu / 44Ni)
Standard Diameter	0.80mm
Custom Diameter Range	0.05mm ~ 3.0mm
Surface Treatment	Stress-Relief Bright Annealed, Mirror Polished, Burr-Free
Operating Temperature	-60°C ~ 400°C (Dry Industrial Atmosphere)
Nominal Resistivity	0.48 µΩ·m (20°C Reference)
Temperature Coefficient of Resistance	Near-zero low drift within -60°C ~ 400°C
Processing Performance	High ductility, tight winding capable, no fracture after repeated bending

Supply & Packaging Standard

Supply Form: Continuous solid round CuNi44 wire densely wound on large heavy-duty black industrial plastic spools; standard full-length large reels and custom cut-to-length small coils available

Packaging: Each large spool wrapped with dust-proof moisture-proof outer packaging plus shockproof protective padding, optimized for bulk factory procurement and long-distance export transportation

MOQ: 1 large black spool for sample trial winding; massive bulk supply for resistor manufacturers, thermocouple sensor factories and electronic component producers

Customization: Custom wire diameter, single spool winding length, annealing hardness and surface finish according to precision resistor and thermocouple production requirements

Typical Application Scope

Precision Resistor Winding: Core raw material for manufacturing low-drift precision wound resistors, shunt resistors and load resistance coils.

Thermocouple Negative Conductor Production: Negative alloy leg for Type J and Type T industrial temperature sensing wires and contact probes.

Strain Gauge & Testing Instrument Components: Stable resistive wire for laboratory measuring equipment, strain detection modules and electrical calibration fixtures.

Electronic Heating Control Elements: Low-drift resistance coils for small precision temperature adjustment modules and electronic thermal regulators.

General Electrical Resistance Components: Long-life resistive wire for household appliance control circuits, automation equipment signal balancing parts.

Company Details

Bronze Gleitlager

Bronze Sleeve Bushings

and

Graphite Plugged Bushings

from Quality China Factory



Business Type:

Manufacturer,Exporter 


Year Established:

2008 


Total Annual:

8000000-100000000


Employee Number:

100~120 


Ecer Certification：

Verified Supplier 

Huona (Shanghai) New Material Co., Ltd. Was established in 2008, currently have three divisions: Magnesium Division, Thermal Spray Division and Functional Material Division.Magnesium Division produces magnesium metal products. Various models of high-quality magnesium alloy plate, magnesium rods, hig... Huona (Shanghai) New Material Co., Ltd. Was established in 2008, currently have three divisions: Magnesium Division, Thermal Spray Division and Functional Material Division.Magnesium Division produces magnesium metal products. Various models of high-quality magnesium alloy plate, magnesium rods, hig...

+ Read More