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CuNi45 Constantan Medium-Fine Round Wire, 0.60mm Diameter Multi-Reel Pack Copper-Nickel Alloy Wire for General Automation & Household Appliance Resistance Components
| Place of Origin | Shanghai |
|---|---|
| Brand Name | Huona |
| Certification | ISO 9001 |
| Model Number | CuNi45 |
| Minimum Order Quantity | 5KG |
| Price | Negotiable |
| Packaging Details | Carton/Wooden Case |
| Delivery Time | 5-21 days |
| Payment Terms | L/C,T/T,Western Union |
| Supply Ability | 500 tons per month |
Product Details
| Alloy Designation | CuNi45 General Purpose Constantan (55Cu / 45Ni) | Standard Diameter | 0.60mm |
|---|---|---|---|
| Custom Diameter Range | 0.10mm ~ 2.8mm Universal Thin & Medium Gauges | Surface Treatment | Homogenizing Uniform Soft Annealed, Mirror Bright Polished, Full Edge Deburred Round Surface |
| Operating Temperature | -65°C ~ 390°C (Regular Dry Household & Light Industrial Atmosphere) | Reference Resistivity | 0.49 µΩ·m At 20°C Reference Ambient Temperature |
| Temperature Coefficient Of Resistance | Low Stable Drift Under Ordinary Cyclic Temperature Changes | Processing Performance | Balanced Tensile Strength & Pliability, Fit Medium-radius Mass Automated Winding, No Fracture After Routine Repeated Bending |
Product Description
Product Overview
This medium-fine CuNi45 constantan solid round wire is mass-produced by HUONA with standardized 55Cu-45Ni alloy composition, positioned for universal light industrial automation and household appliance resistive parts, differentiated from ultra-fine instrument-grade CuNi45 and thick high-current shunt CuNi45 wires. It adopts balanced multi-pass drawing and uniform homogenizing soft annealing technology, delivering stable consistent resistivity, mild temperature resistance drift, smooth scratch-free bright metallic surface and balanced tensile strength & bendability. Neatly wound on lightweight ivory grid plastic spools and supplied in multi-reel sets as shown in the picture, the lightweight reel design reduces overall shipping weight for bulk orders, ideal for mass manufacturing of general-purpose small load resistors, domestic heating control coils and standard general Type J/T thermocouple negative conductors for ordinary factory automation equipment.
Core Specifications
Product Name: CuNi45 Medium-Fine General-Purpose Constantan Solid Round Wire
Alloy Grade: CuNi45 Constantan Alloy (55% Copper + 45% Nickel, separated from CuNi44, micro-fine instrument CuNi45 and heavy shunt CuNi45 grades)
Processing Technology: Balanced medium-gauge precision drawing + homogenizing uniform soft annealing + full surface edge deburring & bright polishing
Standard Specification: 0.60mm Nominal Diameter
Customizable Size Range: Diameter 0.10mm–2.8mm universal thin & medium gauges
Surface Condition: Gloss silver mirror metallic finish, consistent concentric roundness, free of burrs, oxidation stains and longitudinal scratches
Electrical Performance: Stable fixed volume resistivity, low resistance fluctuation under regular cyclic temperature shifts
Operating Temperature Range: -65°C ~ 390°C (continuous stable use under regular dry factory and household appliance working environments)
Standards Compliance: IEC 60584, GB/T 6149, RoHS 2.0, REACH eco-friendly non-hazardous material certification
Key Differentiating Advantages
1. Balanced 55Cu-45Ni Alloy Formulation for Mass General Industrial Production
This medium-fine CuNi45 wire adopts cost-optimized purified smelting process, balancing performance and raw material cost for large-volume general component manufacturing. Its homogenized metallographic grain structure maintains ultra-low temperature coefficient of resistance under regular working temperature fluctuations, and stable batch-to-batch alloy consistency cuts repeated testing costs for household appliance and automation component mass production lines, unlike high-precision ultra-fine grades that carry higher material cost.
2. Versatile Dual Function for Resistance Winding & Standard Thermocouple Fabrication
Apart from manufacturing common small load resistors and control resistance coils for household heating devices, this medium-diameter CuNi45 wire serves as the standard negative matching conductor for conventional Type J and Type T industrial thermocouple probes. Its moderate wire thickness balances flexibility for manual assembly and mechanical durability for ordinary workshop temperature monitoring equipment, outperforming overly fragile ultra-fine wire and overly rigid thick heavy-duty constantan wire for daily industrial use.
3. Uniform Soft Annealing Balances Bendability & Winding Tensile Resistance
Homogenizing soft annealing eliminates internal drawing residual stress while retaining moderate tensile breaking strength. The wire supports medium-radius mass automated coiling, repeated bending and simple cutting without cracking or permanent deformation, perfectly matching the processing parameters of standard general winding machines used by most appliance and sensor manufacturers. Its uniform circular cross-section ensures even resistance distribution across mass-produced resistance coils.
4. Lightweight Ivory Multi-Reel Pack Optimized for Bulk Export Logistics
The wire is neatly layered on lightweight ivory grid-flange plastic spools and supplied in multi-reel combined packaging as displayed. Lightweight reel material lowers total shipment weight to reduce cross-border freight expense for bulk orders, and grid-shaped flanges prevent wire slipping during continuous unwinding. Unified blank marking area on each spool hub simplifies batch sorting and specification tracking for large-scale factory inventory management.
5. Reliable Mild Anti-Oxidation for Long-Term Domestic & Light Industrial Service
CuNi45 copper-nickel alloy delivers stable dry-air anti-oxidation capacity under medium-low regular working temperatures. It avoids rapid oxide film accumulation during daily repeated heating-cooling cycles of household appliances and light automation equipment, slowing resistance drift and extending the service lifespan of mass-produced general resistive and temperature sensing components without frequent replacement.
Technical Specifications Table
| Attribute | Typical Specification |
|---|---|
| Alloy Designation | CuNi45 General Purpose Constantan (55Cu / 45Ni) |
| Standard Diameter | 0.60mm |
| Custom Diameter Range | 0.10mm ~ 2.8mm Universal Thin & Medium Gauges |
| Surface Treatment | Homogenizing Uniform Soft Annealed, Mirror Bright Polished, Full Edge Deburred Round Surface |
| Operating Temperature | -65°C ~ 390°C (Regular Dry Household & Light Industrial Atmosphere) |
| Reference Resistivity | 0.49 µΩ·m at 20°C reference ambient temperature |
| Temperature Coefficient of Resistance | Low stable drift under ordinary cyclic temperature changes |
| Processing Performance | Balanced tensile strength & pliability, fit medium-radius mass automated winding, no fracture after routine repeated bending |
Supply & Packaging Standard
Supply Form: Continuous medium-fine solid CuNi45 wire orderly wound on lightweight ivory grid plastic spools, available in multi-spool combined packs as shown; standard full-length single reels and custom cut fixed-length small coil orders are both supported
Packaging: Each ivory spool wrapped with independent dust-proof sealed bag, multi-reels packed together with shock-absorbing foam padding inside outer carton, optimized for bulk cross-border export and long-term dry warehouse storage
MOQ: 2 ivory spools for mass production trial runs; large-volume bulk supply for household appliance component factories, general automation resistor manufacturers and standard industrial thermocouple sensor producers
Customization Service: Custom medium-fine wire diameter, single spool winding length, annealing softness grade and multi-reel packaging quantity according to general resistance coil and standard temperature probe mass production requirements
Typical Application Scope
Household Appliance Control Resistor Winding: Core raw material for small load resistance coils, temperature control resistors used in electric ovens, drying equipment and heating household devices.
Standard General Type J & T Thermocouple Negative Legs: Matching negative alloy wire for medium-size contact temperature probes applied to ordinary factory automation ovens and light processing machinery.
Light Automation Equipment Thermal Monitoring Parts: Stable temperature sensing wire for packaging machinery, textile processing equipment and small automated production line heating modules.
Universal Low-Power Calibration Resistance Components: Cost-effective resistive wire for ordinary workshop testing benches and general electrical measuring fixtures.
Mass-Produced Light Industrial Resistive Assemblies: Long-life medium-fine resistance wire for general automation circuit balancing parts and small power control modules.
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