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| Brand Name: | DLX |
| Model Number: | CuNi1 Wire |
| MOQ: | 10kg |
| Payment Terms: | L/C,D/A,D/P,T/T,Western Union,VTB |
| Supply Ability: | 500 tons per month |
DLX manufactures high-precision CuNi1 (NC005) copper-nickel alloy wire and strip engineered for water electrolysis hydrogen generation systems and electrochemical applications. Composed of approximately 99% copper and 1% nickel with trace manganese deoxidizers, CuNi1 combines high electrical conductivity (approx. 58% IACS) with enhanced mechanical strength and alkaline corrosion resistance compared to pure copper. In alkaline water electrolysis (AEL) and specialized electrochemical cell assemblies, CuNi1 serves as a dependable material for internal current distribution, electrode busbar interconnects, lead-out conductors, and low-temperature thermal stabilization circuits, preventing electrolytic oxidation and minimizing interface contact degradation.1. Chemical Composition (%)
| Alloy Grade | Cu (%) | Ni (%) | Mn (%) | Fe (%) | Total Impurities (%) |
|---|---|---|---|---|---|
| CuNi1 (NC005) | Balance (≥98.5) | 0.80 – 1.30 | 0.10 – 0.30 | ≤0.10 | ≤0.30 |
2. Physical and Electrical Properties
| Technical Parameter | Metric Value | Condition / Testing Note |
|---|---|---|
| Electrical Resistivity at 20°C | 0.03 ± 0.003 μΩ·m | Standard annealed condition |
| Electrical Conductivity | ≥55% IACS (approx. 32 MS/m) | High electrical efficiency |
| Temperature Coefficient of Resistance (TCR) | < 100 × 10⁻⁶ / °C (20–200°C) | Stable electrical transmission |
| Density | 8.90 g/cm³ | Standard dense alloy matrix |
| Melting Point | 1085 °C | Solidus temperature |
| Maximum Continuous Working Temperature | 200 °C | In electrolytic/atmospheric service |
| Tensile Strength (Annealed M-state) | 210 – 280 MPa | Uniform elongation ≥25% |
| Tensile Strength (Hard Drawn Y-state) | 380 – 450 MPa | High stiffness for rigid pins/leads |
| Thermal Conductivity | 220 W/(m·K) | Rapid heat dissipation |
3. Product Dimension and Form Range
| Product Form | Dimension Range | Tolerance Standard |
|---|---|---|
| Round Wire | Diameter 0.08 mm – 7.50 mm | ±0.002 mm to ±0.02 mm (Tight tolerance) |
| Flat Wire & Ribbon | (0.05 – 0.35 mm) × (0.5 – 6.0 mm) | Uniform edge, burr-free finish |
| Cold-Rolled Strip | (0.10 – 2.50 mm) × (5.0 – 180 mm) | Precision slit edges |
| Solid Rod | Diameter 8.0 mm – 50.0 mm | Straightness ≤1.0 mm/m |
Q1: Why is CuNi1 preferred over pure copper in alkaline electrolysis hydrogen equipment?
A: While pure copper offers lower resistivity, it suffers from rapid oxidation, mechanical softening at elevated temperatures, and surface degradation in hot alkaline mists. CuNi1 introduces 1% nickel, significantly improving alkaline corrosion resistance, creep strength, and weldability while maintaining over 55% IACS electrical conductivity.
Q2: What is the maximum continuous operating temperature for CuNi1 wire in electrolytic cells?
A: CuNi1 alloy wire is rated for continuous operation up to 200°C. Within this operating range, it retains stable resistivity (0.03 μΩ·m) and mechanical tensile strength without structural embrittlement.
Q3: Which supply forms of CuNi1 are available for electrolyzer manufacturing?
A: DLX supplies CuNi1 as round wire (0.08 mm to 7.50 mm), flat wire/ribbon for precision electrode connections, cold-rolled strip for busbar links, and solid rods for terminal studs. Custom sizes and narrow-width slit ribbons are provided based on technical drawings.
Q4: How does DLX ensure electrical resistivity and dimensional tolerance consistency?
A: Each batch is cold-drawn with diamond dies to maintain tight diameter tolerances (down to ±0.002 mm). Electrical resistivity is verified using digital four-probe micro-ohmmeters across different spool sections to ensure batch-to-batch repeatability.
Q5: What is the standard packaging and minimum order quantity (MOQ) for CuNi1 wire?
A: Standard MOQ is 5 kg for standard stock diameters. Wire products are supplied on precision plastic spools (DIN125 to DIN250) vacuum-sealed in anti-corrosion film and packaged inside reinforced export cartons or wooden cases.
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