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CuNi23 Alloy 180 Precision Resistance Wire 0.12mm Diameter with Low TCR ±50 ppm/

China CuNi23 Alloy 180 Precision Resistance Wire 0.12mm Diameter with Low TCR ±50 ppm/

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CuNi23 Alloy 180 Precision Resistance Wire 0.12mm Diameter with Low TCR ±50 ppm/

MOQ： 10KG
Price： Negotiable
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Payment Terms	L/C,T/T,Western Union
Supply Ability	500 tons per month
Delivery Time	5-21 days
Packaging Details	Carton/Wooden case
Alloy Grade	Alloy 180
Diameter	0.12mm (±0.005mm)
Form	Plastic spool (800m/spool)
Resistivity (20°C)	~0.39 Ω·mm²/m
TCR	±50 ppm/°C
Max Operating Temperature	300°C
Tensile Strength	≥400 MPa
Elongation	≥25%
Brand Name	Huona
Model Number	Alloy 180
Certification	ISO9001
Place of Origin	Shanghai

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Product Details
Company Details

Product Specification


Payment Terms	L/C,T/T,Western Union	Supply Ability	500 tons per month
Delivery Time	5-21 days	Packaging Details	Carton/Wooden case
Alloy Grade	Alloy 180	Diameter	0.12mm (±0.005mm)
Form	Plastic spool (800m/spool)	Resistivity (20°C)	~0.39 Ω·mm²/m
TCR	±50 ppm/°C	Max Operating Temperature	300°C
Tensile Strength	≥400 MPa	Elongation	≥25%
Brand Name	Huona	Model Number	Alloy 180
Certification	ISO9001	Place of Origin	Shanghai
High Light	CuNi23 precision resistance wire ，Alloy 180 resistance wire 0.12mm ，To header resistance wire

CuNi23 (Alloy 180) Precision Resistance Wire – 0.12mm Diameter

Product Overview

CuNi23 (Alloy 180 / Cuprothal 180) precision resistance wire from Huona is a copper-nickel-manganese alloy designed for stable, mid-resistance applications requiring low temperature coefficient and good corrosion resistance. It is the industry-standard grade for wire-wound resistors, rheostats, and heating elements where a balance of resistivity, TCR, and cost is needed.

Core Specifications

Product Name: CuNi23 (Alloy 180) Precision Resistance Wire
Alloy Composition: Cu ~77%, Ni ~23%, Mn ~1–2%
Diameter: 0.12mm (customizable: 0.05–1.00mm)
Tolerance: ±0.005mm
Form: Plastic spool (standard length: 800m/spool; custom lengths available)
Key Electrical Properties:
- Resistivity (20°C): ~0.39 Ω·mm²/m
- Temperature Coefficient of Resistance (TCR): ±50 ppm/°C
- Maximum Operating Temperature: 300°C
Standards Compliance: GB/T 1234, ASTM B172, DIN 17471, RoHS 2.0, REACH
Manufacturer: Huona (Shanghai) New Material Co., Ltd.

Key Advantages

1. Stable Resistivity with Low TCR

CuNi23 (Alloy 180) offers consistent resistivity across typical operating temperatures, with a TCR of ±50 ppm/°C. This makes it ideal for applications where resistance drift must be minimized, without requiring the ultra-low TCR of more expensive precision alloys.

2. Balanced Resistivity for Compact Designs

With a resistivity of ~0.39 Ω·mm²/m, it enables the design of compact wire-wound resistors and heating elements, making it a cost-effective choice for mid-range resistance requirements.

3. Excellent Corrosion & Oxidation Resistance

The copper-nickel base forms a protective oxide layer, providing good resistance to atmospheric corrosion, moisture, and mild chemical environments. This ensures long-term reliability in industrial and consumer electronics applications.

4. Good Mechanical Strength & Formability

The wire has a tensile strength ≥400 MPa and elongation ≥25%, making it suitable for fine winding, forming, and soldering. It handles repeated bending without work-hardening excessively, supporting high-volume production.

5. Versatile & Cost-Effective

CuNi23 is widely compatible with standard soldering, welding, and insulation processes. Compared to higher-resistivity nickel-chromium alloys, it offers a more economical solution for applications that don’t require extreme operating temperatures.

Technical Specifications Table

Attribute	Value (Typical)
Alloy Grade	CuNi23 (Alloy 180 / Cuprothal 180)
Diameter	0.12mm (±0.005mm)
Form	Plastic spool (800m/spool)
Resistivity (20°C)	~0.39 Ω·mm²/m
TCR	±50 ppm/°C
Max Operating Temperature	300°C
Tensile Strength	≥400 MPa
Elongation	≥25%
Surface Finish	Bright bare copper-nickel finish (tin-plated optional)
Packaging	Anti-oxidation spool packaging with moisture-proof wrapping

Typical Applications

Wire-Wound Resistors: Mid-range precision resistors for power supplies, control circuits, and consumer electronics.
Rheostats & Potentiometers: Resistance elements for variable resistors in industrial controls and laboratory equipment.
Low-Temperature Heating Elements: Small appliance heating wires, medical device components, and laboratory equipment.
Current-Limiting Elements: Overload protection resistors in power adapters and motor control systems.
Instrumentation Components: Resistance windings for analog meters and signal conditioning circuits.

Company Details

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Year Established:

2008 
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Total Annual:

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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...

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