Cr20Ni80 Heating Wire

Cr20Ni80 is a high-nickel NiCr resistance wire with killer high-temp ductility, creep resistance, and long-term stability. All over industrial electric heating systems. We do B2B custom, OEM, and bulk.

Model: CV-Cr20Ni80
Alloy Grade: Ni80Cr20
Main Composition: Ni: Bal., Cr: 20–23, Fe: ≤1%
Max Temp: 1200°C
Resistivity (20°C): 1.09 μΩ·m
Density: 8.4 g/cm³
Forms Available: Diameters: 0.018–10mm; Strips: 0.02–2mm; Custom tolerances
Common Uses: High-temp furnaces, lab gear, ceramic sintering, cutting wires, appliance heaters

Cr20Ni80 is a high-nickel NiCr resistance alloy wire designed for stable, long-term operation in industrial high-temperature electric heating systems.

Contents hide

Typical mix is around 80% nickel (Ni) + 20% chrome (Cr), with engineering focus on:

High nickel → Boosts ductility and creep resistance at heat—great for long continuous heating
Medium chrome → Builds dense Cr₂O₃ oxide layer for better oxidation resistance and life
Steady resistance → Nails temp control accuracy and reliable high-heat runs
Goal isn’t max temp, but long-term stability and reliability when hot.

Standout Features of Cr20Ni80

Super steady long-term in 1000–1150°C runs—resistance barely budges, easy to predict life.
Tough oxidation fight and structure hold: Dense layer sticks strong, rarely flakes even after tons of hot-cold cycles.
Low creep at heat: High nickel keeps deformation down, cuts break risks big time.
Easy to work with: Coils, straightens, shapes no sweat—fits all kinds of tubes and frames.
Batch consistency rocks: Little variation, perfect for big industrial setups.

Cr20Ni80’s big win is high-nickel ductility and low creep—built for non-stop ops, not just peak temps.

Cr20Ni80 Specs Table

Item	Value
Alloy Name	Cr20Ni80
Equivalent	Nichrome 80/20, Ni80Cr20
Common Aliases	Nichrome Wire 80/20, Ni80Cr20
Composition (%)	Ni: Bal., Cr: 20–23, Fe: ≤1%
Max Temp	1200°C (top NiCr)
Resistivity (20°C)	1.09 μΩ·m
Density	8.4 g/cm³
Thermal Conductivity	60.3 KJ/m·h·°C
Expansion Coefficient	18×10⁻⁶/°C
Melting Point	1400°C
Elongation	>20%
Microstructure	Austenitic
Magnetic	Non-magnetic
Standout Traits	Top oxidation, super resistance stability, strongest temp tolerance
Common Uses	High-temp furnaces, lab gear, ceramic sintering, cutting wires, appliance heaters
Available	Diameters: 0.018–10mm; Strips: 0.02–2mm; Custom tolerances

Typical Cr20Ni80 Spots

High-temp industrial furnaces: Wires, strips, meshes for even heat and long reliability.
Non-stop heating systems (24/7): Steady resistance, low maintenance.
Precision heat treat gear: Tight control, low drift—keeps products consistent.
Premium OEM kits: Great for standard long bulk, steady performance.

Usage Tips & Limits

Long-term ≤1100–1150°C: Push higher risks thicker/flaking oxide.

Match loads to wire size: Thin + heavy power ages fast or snaps.

Best oxidizing/neutral air: Reducing/sulfur/carburizing hurts the layer.

Leave expansion room: Tight fixes build stress, break risk.

Frequent fast hot-cold? Drop power/temp—shock weakens layer stick.

Cr20Ni80 Selection Comparison

Feature	Cr15Ni60	Cr20Ni30	Cr20Ni35	Cr20Ni80	Cr30Ni70
Nickel	Medium	Medium-High	High	Super High	High
Chrome	Low	Medium	Medium	Medium	High
Oxidation Fight	Solid	Average	Solid	Excellent	Top-Notch
High-Temp Strength	Average	Solid	Solid	Very Solid	Rock-Solid
Temp Spot	Mid	Mid	Mid-High	High	High
Continuous Life	Medium	Medium	Long	Longer	Longest
Cost	Medium	Medium	Higher	High	Highest

For high-temp long stability, low upkeep, reliability over cheap, Cr20Ni80 gives killer high-nickel continuous value—beats pricier high-nickel/chrome options on cost-performance.

CVSIC Cr20Ni80 Custom Options

Diameters: Common industrial
Forms: Coils, straight, cut-to-length
Extras: Coiling, shaping, pre-fab components
Models: Wholesale, OEM, ODM
Customers: Furnace factories, integrators, engineering firms

Perfect for long bulk and project fits, super batch consistency.

Quality Control & Consistency

Precise high-nickel melt/composition
Resistivity/diameter checks
High-temp aging/oxidation tests
Traceable batches for long projects

Cr20Ni80 NiCr resistance wire is the high-nickel continuous champ in NiCr:

Steady resistance → Spot-on control
High nickel → Low creep, hot break fight
Solid chrome → Oxidation resistance, self-healing layer
B2B custom → Bulk industrial fits

For long stable high-temp non-stop runs and low upkeep, Cr20Ni80 is safe, reliable, and great value.

FAQs

Long-term at 1150°C?

Long-term ≤1100–1150°C with smart loads for life/structure.

Edge over Cr30Ni70?

Higher nickel for better ductility/low creep, but less chrome so slightly weaker oxidation—better cost.

Good for frequent on-off?

Handles some cycles, but fast hot-cold needs lower power/temp.

Reducing air?

Nope—H₂/CO/sulfur hurts protection.

Main uses?

High-temp furnaces, non-stop systems, precision treat, OEM projects.

Looking for Reliable High Temperature Heating Solutions?

Contact CVSIC today for a one-stop solution for deheating! With over fifteen years of R&D and manufacturing experience, we have absolute confidence in our products! Feel free to contact us for free samples for trial!

Contact nowEmail

Products Related To Cr20Ni80 Heating Wire

CuNi44 Alloy Wire

Model: CV-CuNi44
Alloy Grade: CuNi44 (NC050)
Main Composition: Ni ≈44, Mn: 1%, Cu Bal.
Max Temp: 500°C
Resistivity (20°C): 0.50 μΩ·m ±5%
Density: 8.9 g/cm³
Forms Available: Wire, strip, ultra-thin foil
Common Uses: Precision resistors, strain gauges, bridges, instrument standards