All Products
-
Alfred***We received the goods, everything went fine. Perfect packaging, good product quality, good price - we are satisfied. -
May***The product quality is very good, beyond my expectations, the actual use of fully meet my needs, we will buy again. -
Matthew***I bought low expansion alloy from Joy, She is a very responsible lady, Huona's products quality is pretty good.
Constantan45 Fine Round Wire, 0.50mm Diameter Low-Noise Copper Nickel Alloy Wire for Precision Signal Balancing & Textile Drying Thermal Sensors
| Place of Origin | Shanghai |
|---|---|
| Brand Name | Huona |
| Certification | ISO 9001 |
| Model Number | Constantan45 |
| 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 | Constantan45 Low-Noise Grade (55Cu / 45Ni) | Standard Diameter | 0.50mm |
|---|---|---|---|
| Custom Diameter Range | 0.08mm ~ 2.6mm Fine & Medium Universal Gauges | Surface Treatment | Low-Tension Uniform Soft Annealed, Mirror Bright Polished, Full Edge Deburred Concentric Round Surface |
| Operating Temperature | -70°C ~ 375°C (Dry Low-Dust Textile Drying Industrial Atmosphere) | Reference Resistivity | 0.49 µΩ·m At 20°C Reference Ambient Temperature |
| Temperature Coefficient Of Resistance | Mild Low Drift Within Full Light-industry Working Temperature Band | Processing Performance | Balanced Softness & Tensile Strength, Fits Semi-automatic Medium-radius Winding, No Fracture After Regular Repeated Bending |
Product Description
Product Overview
This single-spool Constantan45 solid round wire is manufactured by HUONA with standardized 55Cu-45Ni metallurgical ratio, targeted at low-noise signal balance circuits and light industrial drying equipment temperature probes, fully differentiated from thick high-current Constantan45, ultra-fine medical-grade Constantan45 and traditional CuNi44 constantan series. It adopts multi-pass medium-fine precision drawing and uniform low-residual-stress soft annealing craft, delivering ultra-consistent circular cross-section, smooth burr-free silver metallic finish, ultra-low electrical noise and mild temperature resistance drift. Tightly and neatly wound on single lightweight ivory grid industrial plastic spools as shown in the picture, the grid flange structure prevents wire slippage during semi-automatic winding processes. It acts as exclusive raw material for low-interference signal balancing resistors, textile drying oven surface thermosensors and lightweight portable Type J/T thermocouple negative conductors for light processing industry.
Core Specifications
Product Name: Constantan45 Low-Noise Fine Solid Round Wire
Alloy Grade: Constantan45 (55% Copper + 45% Nickel, independent grade separated from CuNi44, heavy shunt Constantan45 & micro medical Constantan45)
Processing Technology: Medium-fine multi-stage precision wire drawing + uniform low-tension soft annealing + full surface deburring bright polishing
Standard Specification: 0.50mm Nominal Diameter
Customizable Size Range: Diameter 0.08mm–2.6mm fine & medium universal gauges
Surface Condition: Gloss silver mirror metallic finish, high concentric roundness, free of scratches, oxide spots and longitudinal burrs
Electrical Performance: Stable fixed volume resistivity, ultra-low electrical signal noise, minimal resistance fluctuation with ambient temperature shifts
Operating Temperature Range: -70°C ~ 375°C (continuous stable operation in dry low-dust light industrial drying environments)
Standards Compliance: IEC 60584, GB/T 6149, RoHS 2.0, REACH eco-friendly non-hazardous material certification
Key Differentiating Advantages
1. Refined Constantan45 Alloy Formula Optimized for Low-Noise Signal Circuits
Distinct from other constantan variants, this Constantan45 wire adopts low-impurity smelting technology to reduce internal metal crystal defects, greatly lowering contact noise during current transmission, which avoids signal distortion in precision weak-current balancing circuits. The balanced copper-nickel grain structure maintains nearly unchanged resistance value under mild temperature fluctuations, and stable batch alloy consistency cuts signal calibration frequency for light industry electronic control equipment mass production.
2. Dual Application: Low-Noise Resistors & Textile Drying Thermocouple Conductors
Besides manufacturing low-interference signal balance resistors for light industrial control boards, this medium-fine Constantan45 wire serves as the matched negative alloy leg for Type J and Type T thermocouples used in textile drying ovens, fabric setting machinery and small drying tunnels. Its moderate wire thickness balances flexibility for surface attachment and mechanical durability under long-term low-to-medium temperature cyclic heating of textile processing equipment.
3. Low-Tension Soft Annealing Delivers Balanced Machinability
Uniform low-stress annealing eliminates drawing internal tension without excessive softening that causes winding deformation. The wire supports medium-radius semi-automatic coiling, regular cutting and flat laminating without rebound or fracture. Consistent circular cross-section ensures even current distribution and uniform heat dissipation on finished resistance coils, effectively reducing local hot spots during long-time equipment operation.
4. Single Ivory Grid Spool Design for Small & Medium Batch Production
The fine Constantan45 wire is orderly wound on single lightweight ivory grid-flange plastic spools, suitable for small and medium batch winding tasks of sensor and electronic component factories. The hollow grid flange design reduces spool self-weight to cut single-unit shipping cost, and blank marking area on the central hub facilitates independent batch tracking for separate order processing, avoiding material mixing in multi-item production lines. The smooth polished wire surface prevents abrasion during repeated unwinding on semi-automatic winding machines.
5. Dust & Dry Heat Resistant Performance for Textile Industrial Scenarios
Constantan45 copper-nickel alloy possesses stable anti-oxidation capacity under dry, slightly dusty medium-temperature textile workshop environments. It resists rapid oxide film accumulation under continuous drying oven working conditions, slowing resistance drift and extending the service cycle of temperature sensing probes and signal balance resistance parts in textile processing equipment.
Technical Specifications Table
| Attribute | Typical Specification |
|---|---|
| Alloy Designation | Constantan45 Low-Noise Grade (55Cu / 45Ni) |
| Standard Diameter | 0.50mm |
| Custom Diameter Range | 0.08mm ~ 2.6mm Fine & Medium Universal Gauges |
| Surface Treatment | Low-Tension Uniform Soft Annealed, Mirror Bright Polished, Full Edge Deburred Concentric Round Surface |
| Operating Temperature | -70°C ~ 375°C (Dry Low-Dust Textile Drying Industrial Atmosphere) |
| Reference Resistivity | 0.49 µΩ·m at 20°C reference ambient temperature |
| Temperature Coefficient of Resistance | Mild low drift within full light-industry working temperature band |
| Processing Performance | Balanced softness & tensile strength, fits semi-automatic medium-radius winding, no fracture after regular repeated bending |
Supply & Packaging Standard
Supply Form: Continuous medium-fine solid Constantan45 wire neatly layered on single lightweight ivory grid plastic spools; standard full-length single reels and custom short-cut small coil orders are both acceptable
Packaging: Each single ivory spool individually packed with dust-proof sealed plastic bag plus soft shock-absorbing foam padding, suitable for small-batch sample shipment and long-term clean indoor warehouse storage
MOQ: 1 single ivory grid spool for small-batch prototype winding testing; large-volume bulk supply for textile equipment sensor factories, light industrial electronic control component manufacturers and drying machinery thermal monitoring part producers
Customization Service: Custom medium-fine wire diameter, single spool winding total length, annealing softness level and surface polishing smoothness based on low-noise signal resistor and textile drying oven thermoprobe production demands
Typical Application Scope
Low-Noise Precision Signal Balancing Resistor Winding: Core raw material for weak-current balance resistance coils used in light industry automation electronic control circuit boards.
Textile Drying Equipment Thermocouple Negative Leg Fabrication: Matching negative alloy wire for medium-size Type J & Type T surface contact temperature probes on fabric drying ovens and setting machinery.
Small Light Industrial Heating Machinery Thermal Monitoring Parts: Stable temperature sensing wire for desktop drying machines, packaging heat sealing equipment and mini food processing heating devices.
Portable Light-Duty Thermal Test Instruments: Low-noise resistive wire for handheld field temperature detection meters and small workshop calibration benches.
General Light Industry Low-Power Electronic Assemblies: Long-life medium-fine resistance wire for small household heating appliance control circuits and miniature automation signal balancing modules.
Recommended Products
