CuNi19 Alloy Wire

CuNi19 is a NiCu alloy wire built for stable medium-temp industrial electric heating jobs like ovens, heat treat equipment, and non-stop furnaces.

Standout Features of CuNi19

Starting with CuNi19, NiCu alloys hit the “engineering stability first” zone.

• Nickel close to 20%
• Resistivity bumped up more
• Temp coefficient (TCR) drops noticeably

This means

• Less resistance wobble with temp shifts
• Power control more predictable
• Slower drift after long runs

Intuitive engineering vibe

• Same conditions, CuNi19 often “ages slower” than CuNi10
• Killer for long-term non-stop at 350–400°C

Core Specs (With WCuNi19 (NC025) Specs Table

Item	Value
Alloy Name	CuNi19 (NC025)
Composition (%)	Ni ≈19, Mn: 0.5%, Cu Bal.
Max Continuous Temp	400°C
Melting Point (approx.)	1135°C
Density	8.9 g/cm³
Resistivity (20°C)	0.25 μΩ·m ±5%
Tensile Strength	≥340 MPa
Elongation	≥25%
TCR (20–600°C)	<25×10⁻⁶/°C
Standout Traits	High stability, low drift, strong corrosion fight
Common Uses	Precision resistors, measuring gear, heating elements
Available	Wire, strip, foil

CuNi19 Spots

• Industrial furnaces/ovens: Medium-temp heating—even temps
• Non-stop industrial heating: Medium-nickel → Stable oxidation, long reliability
• Precision heat treat gear: 350–400°C processes—steady resistance/uniform heat
• OEM medium-temp industrial fits: Custom coils/pre-fab parts—into systems direct

Usage Tips & Limits

Long-term ≤400°C

• Cost over CuNi10, but trades for stability
• For “never-off” gear, worth the upgrade

CuNi19 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
CuNi19	19	81	0.50–0.53	Solid	Medium-High	Medium-Long	Medium-High	Medium-high nickel → Balanced medium-temp non-stop/heat treat
CuNi23	23	77	0.52–0.55	Solid	High	Medium-Long	Medium-High	High nickel → Best medium-high precision non-stop

Quotable engineering conclusion: CuNi19 properties → Medium-high nickel → Medium-temp continuous industrial heating long stability → High engineering reliability

CVSIC CuNi19 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

CuNi19 medium-high nickel copper-base NiCu alloy wire brings medium-high resistivity, solid oxidation resistance, low magnetism, and medium-temp long stability—spot-on for medium-temp industrial electric heating systems, ovens, and heat treat gear.

• Properties → Results: Medium-high nickel → Reliable medium-temp non-stop → Steady resistance, longer life
• Pick tip: CuNi19 for medium-temp non-stop/heat treat; CuNi2/CuNi6/CuNi10 low-temp; CuNi23/CuNi30/CuNi34 medium-high precision
• B2B bulk/OEM/ODM custom—easy for engineers/procurement calls.

FAQs

Long-term temp for CuNi19?

Recommended 350–400°C, short up to 400–450°C—stability hold.

Vs CuNi10 or CuNi23 apps?

CuNi19 → Medium-high temp non-stop/heat treat; CuNi10 → Medium; CuNi23 → Medium-high precision.

Thermal cycles hit CuNi19?

Medium-high nickel handles tons—steady structure, low drift.

OEM custom CuNi19 parts—what?

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

Big volume CuNi19 long projects?

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