CuNi34 Alloy Wire

CuNi34 is a NiCu alloy wire built for stable medium-to-high temp industrial electric heating jobs like ovens, heat treat equipment, and non-stop furnaces.

Standout Features of CuNi34

CuNi34 is a super mature, “engineering-friendly” high-stability model in the NiCu lineup.

• Nickel around 34%
• High and steady resistivity
• Good thermal cycling adaptability

CuNi34 isn’t chasing extreme temps—it’s all about extreme stability.

CuNi34 (NC040) Specs Table

Item	Value
Alloy Name	CuNi34 (NC040)
Composition (%)	Ni ≈34, Mn: 1%, Cu Bal.
Max Continuous Temp	500°C
Melting Point (approx.)	1180°C
Density	8.9 g/cm³
Resistivity (20°C)	0.40 μΩ·m ±5%
Tensile Strength	≥400 MPa
Elongation	≥25%
TCR (20–600°C)	≈0
Standout Traits	Near-zero drift (ZTC), long-term steady
Common Uses	Standard resistors, precision measure, lab instruments
Available	Wire, strip, ultra-thin foil

CuNi34 Spots

• Industrial furnaces/ovens: Medium-high temp heating—even control
• Non-stop high-temp heating: High-nickel → Stable oxidation, long reliability
• Precision heat treat gear: 450–500°C processes—steady resistance/uniform heat
• Premium OEM fits: Custom coils/pre-fab parts—into medium-high temp systems

Usage Tips & Limits

Long-term ≤500°C

• Killer for premium OEM, long projects
• Use it to “have fewer issues”

CuNi34 Selection Comparison

Grade	Ni%	Cu%	Resistivity	Oxidation	High-Temp Strength	Life	Cost	Quick Take
CuNi2	2	98	0.435–0.45	Solid	Medium	Medium-Long	Low–Medium	Low power low-temp steady → Budget pick
CuNi6	6	94	0.45–0.48	Solid	Medium-High	Medium-Long	Medium	Medium nickel → Reliable medium-temp non-stop
CuNi10	10	90	0.48–0.52	Solid	Medium-High	Medium-Long	Medium-High	High nickel → Reliable medium-high temp non-stop
CuNi23	23	77	0.52–0.55	Solid	High	Medium-Long	Medium-High	High nickel → Best medium-high precision non-stop
CuNi30	30	70	0.55–0.58	Solid	High	Medium-Long	Medium-High	High nickel → Optimal medium-high sustained runs
CuNi34	34	66	0.57–0.60	Solid	High	Medium-Long	Medium-High	High nickel → Best medium-high precision industrial non-stop, great for high-temp long runs

CVSIC CuNi34 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—steady wire/dimensions

Quality & Consistency

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

Wrap-Up

CuNi34 high-nickel copper-base NiCu alloy wire brings high resistivity, excellent oxidation resistance, medium-high temp long stability, and low magnetism—spot-on for medium-high temp industrial electric heating systems, ovens, and precision heat treat gear.

• Properties → Results: High nickel → Reliable medium-high temp non-stop → Steady resistance, longer life
• Pick tip: CuNi34 for precision medium-high temp non-stop; CuNi10/CuNi23 medium; CuNi2/CuNi6 low-temp budget
• B2B bulk/OEM/ODM custom—easy for engineers/procurement calls.

FAQs

Max long-term temp for CuNi34?

Air long-term 450–500°C, short 550–600°C—high nickel keeps it steady.

Vs CuNi30—why pick?

CuNi34 → Higher nickel → Better higher temp continuous, fits precision industrial; CuNi30 → Medium-high precision non-stop, bit cheaper.

Thermal cycles hit CuNi34?

High nickel handles tons—steady structure, low drift.

OEM custom CuNi34 parts—what?

Coil winding, shaping, pre-fab—into high-temp industrial systems direct.

Big volume CuNi34 long projects?

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

Precision heat treat gear?

Super low magnetism—even/steady control, perfect for precision non-stop.