Hard / Soft CuNi Alloy 23%Ni Cu/Ni Excellent Resistivity 0.12μΩ.m20.C Tcr 50 X10-6/C

ISO9001 & SGS Certified | Est. 2002 | 12,000 m² Factory | 0.08–7.5mm | 3–7 Day Dispatch

CuNi alloy wire from Changzhou DLX Alloy Co., Ltd. — with 23% nickel content — delivers excellent and stable electrical resistivity of 0.12 μΩ·m at 20°C combined with a low temperature coefficient of resistance (TCR) of 50*10⁻⁶/°C. Available in both hard and soft temper to match your forming and electrical performance requirements, our CuNi23 wire is manufactured through precision melting, multi-pass cold drawing, and controlled-atmosphere annealing for uniform diameter, consistent resistivity, and reliable thermoelectric performance. Widely used in precision resistors, heating cables, thermal overload relays, low-resistance circuit breakers, and electrical appliance components. Full EN 10204 3.1 MTC traceability on every spool.

Hard or soft? Hard temper delivers higher mechanical strength and stiffness — ideal for self-supporting elements. Soft temper provides maximum formability for winding and coiling operations. Electrical resistivity is consistent in both conditions. Not sure? Tell us your forming process — we recommend within 24 hours.

• Dual temper availability — hard & soft from one supplier — Order hard temper for self-supporting rigid elements, soft temper for winding and coiling. Same grade, same resistivity, same traceability — different mechanical condition to match your process. No need to qualify two different suppliers.
• Resistivity independent of temper — Unlike work-hardened pure metals where resistivity shifts with cold work, CuNi23 maintains stable 0.12 μΩ·m in both hard and soft conditions. Your electrical design holds regardless of wire delivery condition.
• Low TCR — stability where it matters — 50*10⁻⁶/°C means minimal resistance change with temperature. Your precision resistor or relay winding maintains calibrated performance from cold start to full operating temperature.
• Precision diameter: 0.08–7.5 mm — Multi-pass cold drawing with in-line diameter control. Consistent cross-section means consistent resistance per meter — critical when every ohm counts in your design.
• Good corrosion resistance without coating — The 23% nickel content provides inherent resistance to oxidation and moisture. No plating or coating required for most applications — simplifies your supply chain and manufacturing process.
• Full traceability — heat to spool — Every spool traceable to original heat number. EN 10204 3.1 MTC with chemical composition and mechanical properties included as standard. When your customer audits material certs, the documentation chain is complete.

Changzhou DLX Alloy Co., Ltd. was founded in 2002 with a single focus: nickel-based specialty alloys — including the full CuNi alloy family from CuNi1 to CuNi44. We don't just draw wire; we melt, forge, roll, and draw under one roof with metallurgical control at every step.

• 12,000 m² dedicated facility — integrated melting, forging, rolling, multi-pass drawing, controlled-atmosphere annealing, and testing. Wire produced under one roof from ingot to finished spool.
• Full CuNi alloy range — manufacturing experience from 1% to 44% nickel. When you need CuNi23 today and CuNi44 or Manganin tomorrow, we can supply from a single qualified source.
• 0.08–7.5 mm diameter range — from fine wire for precision resistors to heavy-gauge wire for industrial heating elements. One supplier across your full diameter requirement.
• 1,200-ton annual capacity — automated drawing lines with in-line monitoring ensuring consistent diameter and consistent resistivity spool to spool, batch to batch.
• ISO9001 quality management with multi-point traceability; SGS-accredited with BV and TÜV third-party inspection available.

Source: DLX Alloy product catalog. EN 10204 3.1 MTC with full composition included on every shipment.

Third-party inspection by SGS, BV, or TÜV available upon request. All shipments fully documented and traceable to heat number.