CuNi2

CuNi2 is a NiCu alloy wire built for stable industrial electric heating jobs like ovens, heat treat equipment, and non-stop furnaces.

• High copper, low nickel mix → Moderate resistivity → Awesome for low-power long-haul heating
• Killer oxidation resistance → Steady surface → Longer wire life
• Low magnetism → Better heat evenness → Precise heat treat control

Standout Features of CuNi2

CuNi2 is the lowest-nickel in NiCu—basically a “copper-heavy” alloy.

• Around 2% nickel—resistivity not crazy high, but way steadier than pure copper.
• Top-notch heat conduction—heats evenly, no hot spots, easy.
• Resistance shifts linearly with temp—control logic straightforward.

Fits great for:

• Low or medium-low temp heating
• Can’t crank power density too high
• In non-stop systems with moderate temps, it’s super tough

CuNi2 (NC005) Specs Table

Item	Value
Alloy Name	CuNi2 (NC005)
Composition (%)	Ni ≈2, Cu Bal.
Max Continuous Temp	250°C
Melting Point (approx.)	1090°C
Density	8.9 g/cm³
Resistivity (20°C)	0.05 μΩ·m ±10%
Tensile Strength	≥220 MPa
Elongation (Φ>1.0)	≥25%
TCR (20–600°C)	<120×10⁻⁶/°C
Standout Traits	Super low resistance, weldable, strong mechanically
Common Uses	Low-res resistors, shunts, motor windings, auto low-res parts
Available	Diameters 0.02–10mm; Strips 0.02–2mm; Custom wire/strip

Typical CuNi2 Spots

• Industrial furnaces/ovens: Low-power wires for even temp control
• Non-stop heating systems: Copper-base NiCu stable oxidation for long life
• Heat treat gear: Steady resistance/uniform heat in precision jobs
• Premium OEM fits: Custom coils/pre-fab parts for full integration

Usage Tips & Limits

Long-term ≤200–250°C

• Not for tiny size/high-power designs
• More “industrial workhorse” than performance beast

CuNi2 Selection Comparison

Grade	Ni%	Cu%	Resistivity (Ω·mm²/m)	Oxidation	High-Temp Strength	Life	Cost	Quick Take
CuNi2	2	98	0.435–0.45	Solid	Medium	Medium-Long	Low–Medium	Copper-heavy low-nickel → Steady medium power long-term, bulk low-temp winner
CuNi6	6	94	0.45–0.48	Better	Medium	Medium-Long	Medium	Bit more Ni → Higher temp okay, cost up
CuNi10	10	90	0.48–0.52	Solid	Medium	Medium	Medium	More Ni → Handles hotter, price bump
NiCr20	80	20	1.0–1.1	Excellent	High	Long	High	High-nickel NiCr → Hot apps, but low-power pricey

CVSIC CuNi2 Custom Options

• Diameters: 0.05–2 mm, custom
• Forms: Coils, straight, cut-to-length
• Extras: Coil winding, shaping, pre-fab components
• Models: Wholesale, OEM, ODM
• Customers: Industrial makers, heat treat firms, system integrators
• Tip: Great for long bulk buys—steady wire/dimensions

Quality & Consistency

• Tight Ni/Cu ratio control for resistance/oxidation
• 100% batch resistivity/size checks for engineering match
• Simulated long-run aging/oxidation—drift < ±3%
• Traceable spools for bulk project control

FAQs

Max long-term temp for CuNi2?

Air long-term 200–250°C, short bursts 300°C. Copper-base NiCu solid oxidation, steady resistance long-haul.

CuNi2 or CuNi6 for non-stop ovens?

CuNi2 → Medium power low-temp steady, cheap; CuNi6 → Hotter okay, costlier—pick CuNi2 for continuous medium-low ovens.

Thermal cycles hit CuNi2?

Copper low-nickel handles tons in 300–350°C—steady structure, low drift, tough integrity.

OEM custom CuNi2 parts—what processing?

Coil winding, shaping, pre-fab—drop right into furnaces/heat treat gear.

Big volume CuNi2 for long projects?

Batch trace, composition/resistance checks—perfect long-term bulk, consistent performance.

High magnetic fields?

Super low magnetism—fine for precision heat treat, no temp control interference.