CuNi44 / NC050 / 2.0842 / C72150 CuNi Alloy Wire Resistant Choice For Power

Product Specification

CuNi44/NC050/2.0842/C72150 CuNi Alloy Wire The Resistant Choice For Power Generation Applications

CuNi44/NC050/2.0842/C72150 Wire is a high-resistance copper-nickel alloy composed of approximately 44% nickel and 56% copper. This alloy is primarily recognized for its high electrical resistivity, low temperature coefficient of resistance (TCR), and excellent corrosion resistance, making it ideal for electrical and thermal applications. CuNi44 is widely used in precision resistors, heating elements, and thermocouples due to its stable performance across a wide range of temperatures.

CuNi44/NC050/2.0842/C72150 Wire is a versatile copper-nickel alloy with high electrical resistivity, low TCR, and excellent corrosion resistance. These properties make it ideal for applications in precision resistors, heating elements, and thermocouples. Its non-magnetic nature and thermal stability further enhance its suitability for sensitive electronic and industrial environments. While its higher cost and lower conductivity compared to pure copper may limit its use in some applications, CuNi44's durability and reliability in demanding conditions make it a premium choice for critical applications in marine, chemical, and electrical industries.

Main physical properties:

Technical data table

• Tolerance of ohm/m: ±5%
• Round wire: range from 0.04mm (0.0016″) to 12mm (0.4724″)
• Ribbon: range from 0.05mm (0.002″) to 6mm (0.2362″), Max ratio width : thickness = 10:1

Key Features of CuNi44/NC050/2.0842/C72150 Wire:

• Composition:

Nickel (Ni): ~44%.

Copper (Cu): ~56%.

May contain trace elements for improved performance.

• High Electrical Resistivity:

Resistivity: Approximately 490 µΩ·cm at 20°C, making it suitable for high-resistance applications.

Stable resistance across a wide temperature range due to its low TCR.

• Corrosion Resistance:

Outstanding resistance to oxidation and corrosion in various environments, including humid and marine conditions.

Resistant to stress corrosion cracking and sulfide-induced corrosion, ensuring long-term reliability.

• Mechanical Properties:

Good Strength and Ductility: Provides reliable mechanical performance while allowing easy fabrication into wires, strips, or other forms.

Workability: Can be cold worked to enhance strength or achieve precise dimensions.

• Thermal Properties:

Stable Thermal Performance: Low thermal expansion and good heat resistance.

Performs efficiently in applications requiring sustained exposure to high temperatures, up to 400°C (752°F).

• Non-Magnetic:

Completely non-magnetic, making it suitable for sensitive electronic applications where magnetic interference must be avoided.

• Weldability and Fabrication:

Ease of Fabrication: Can be drawn into thin wires or formed into strips, making it versatile for manufacturing.

Weldability: Compatible with standard welding techniques without compromising its corrosion resistance or mechanical properties.

Applications:

• Electrical Resistance: Ideal for precision resistors, rheostats, and potentiometers where stable resistance is critical.
• Heating Elements: Commonly used in heating wires for appliances, industrial heaters, and resistive heating applications.
• Thermocouples: Frequently used in Type T thermocouples and other temperature-sensing devices.
• Instrumentation: Employed in high-precision measurement instruments, strain gauges, and other devices requiring accurate electrical properties.
• Marine and Chemical Environments: Used in environments exposed to seawater and corrosive chemicals due to its exceptional corrosion resistance.

Advantages of CuNi44/NC050/2.0842/C72150 Wire:

• High Electrical Resistivity: Provides consistent performance in high-resistance applications.
• Excellent Corrosion Resistance: Performs well in harsh environments, including marine and chemical industries.
• Thermal Stability: Maintains stable properties at elevated temperatures, making it suitable for heating and sensing applications.
• Non-Magnetic: Ideal for electronic applications requiring non-magnetic materials.
• Long Service Life: Resistant to oxidation and wear, ensuring reliability and durability.

Limitations of CuNi44/NC050/2.0842/C72150 Wire:

• Cost: The high nickel content makes it more expensive than some other copper-based alloys.
• Lower Conductivity: Its high resistivity limits its use in applications requiring high electrical conductivity.
• Limited Extreme Temperature Use: While stable up to 400°C, applications beyond this temperature may require specialized alloys.