0Cr23Al5 Alloy Wire

0Cr23Al5 is a classic FeCrAl (iron-chrome-aluminum) resistance wire, made mostly of iron (Fe), about 23% chromium (Cr), and 5% aluminum (Al).

At high temps, it builds a tight Al₂O₃ protective oxide layer that gives solid oxidation resistance and stable electrical behavior in regular air.

It’s a common pick for medium-to-high temp industrial heating and often steps in as a cost-effective alternative to 0Cr25Al5.

Standout Features of 0Cr23Al5

0Cr23Al5 is hands-down one of the most popular FeCrAl grades out there. That 23% Cr + 5% Al mix gives you solid high-heat performance at a really fair price.

• Runs steady long-term at 1150°C and can handle short spikes up to 1200°C no sweat.
• Enough aluminum to form a dense, continuous alumina layer that actually heals itself—stands up to tons of heating-cooling cycles without peeling off.
• Resistance stays super consistent with predictable temp changes—ideal for always-on setups and tight power control.
• Good high-temp strength plus easy workability—way simpler to coil and shape than super-high-aluminum grades like 0Cr27Al7Mo2, perfect for standard wires and coiled heaters.
• Built for long-haul heating designs—in steady conditions, it barely changes size or drifts in resistance, so lifespan is easy to predict.

Balanced, widely used, and super easy to swap in—0Cr23Al5 is the default choice for most industrial furnaces.

0Cr23Al5 (FeCrAl 235) Detailed Specs

Item	Value
Model	CV-0Cr23Al5
Alloy Grade	0Cr23Al5 (FeCrAl 235)
Composition (%)	Fe: Bal.; Cr: 22–24; Al: 4.5–6.0; Mo: ≤0.5
Max Continuous Temp	≤ 1250°C
Resistivity (20°C)	1.40 μΩ·m
Density	7.1 g/cm³
Thermal Conductivity	13 KJ/m·h·°C
Expansion Coefficient	14 ×10⁻⁶/°C
Melting Range	1500–1520°C
Tensile Strength	≥650 MPa
Elongation	≥12%
Microstructure	Ferritic
Magnetic	Yes
Key Advantages	High Cr → Better oxidation & sulfur resistance
Common Uses	Industrial furnaces, resistance ribbons, tunnel kilns, sintering furnaces

Its steady resistivity and high-temp strength make 0Cr23Al5 perfect for non-stop or on-off heating systems—long life without breaking the bank.

Where 0Cr23Al5 Gets Used

0Cr23Al5 resistance wire turns electricity into heat and shows up all over industrial heating gear:

• Industrial electric furnaces: Heating elements in box furnaces, trolley furnaces, and lab furnaces for high-heat work.
• Heat treatment setups: Great for annealing, tempering, normalizing—keeps temps even.
• Electric heater manufacturing: Tubular heaters, ceramic-supported elements.
• Lab and research gear: Test furnaces and experimental heating systems.

Usage Tips & Limits

Long-term continuous temp ≤ 1200–1250°C

• Short bursts can go higher
• Stay over that too long and the oxide gets thick and flakes off quicker

Match power load carefully to wire size

• Thinner wires in hot zones fail faster if surface load is too high
• Always calculate max W/cm² during design

Only good in oxidizing or neutral air

• Reducing gases (H₂, CO) or sulfur kills the protective layer
• Skip it for carburizing or sulfur-heavy furnaces

Don’t clamp it tight when hot

• Strength drops at temp—leave room for expansion to avoid snapping

Avoid super-fast hot-cold cycles

• Thermal shock weakens the oxide bond
• For frequent on-off, drop the design temp and load

0Cr23Al5 vs 0Cr25Al5 Quick Comparison

Feature	0Cr23Al5	0Cr25Al5
Chromium	Lower	Higher
Aluminum	Steady	A bit higher
Max Temp	~1250°C	~1300°C
Cost	Lower	Higher
Best For	Mid-high temp heating	Pushing higher temps

Quick tip:

• Temps ≤1250°C and want best bang for buck → Go 0Cr23Al5
• Need max surface heat or longest life → Step up to 0Cr25Al5

CVISC 0Cr23Al5 B2B Wholesale & OEM

We handle full customization for 0Cr23Al5 FeCrAl resistance wire:

• Diameters: Wide range available
• Forms: Straight, coiled, cut-to-length
• Surface: Bright or pre-oxidized
• Packaging: Industrial spools or custom
• Orders: Wholesale, OEM, ODM

Perfect for heater manufacturers, furnace builders, and project buyers.

Quality & Supply Assurance | B2B Level

• Tight chemistry control
• Batch-to-batch resistivity consistency
• Proven FeCrAl production know-how
• Full testing reports and tech docs available

Every spool performs reliably with predictable life in real jobs.

Wrap-Up | Solid, Practical FeCrAl Resistance Wire

0Cr23Al5 FeCrAl resistance wire nails the balance of performance, price, and dependability—it’s a proven, reliable pick for industrial heating and resistive systems.

Reach out to our engineering team for specs, samples, or custom pricing.

FAQs | 0Cr23Al5 Basics

Is 0Cr23Al5 the same thing as FeCrAl?

0Cr23Al5 is a specific grade inside the FeCrAl family of resistance wires.

What’s the max temp it can take?

In air, aim for around 1250°C max—depends on wire size and load.

Can it replace 0Cr25Al5?

Yeah for mid-high temps, but if you’re pushing close to 1300°C, stick with 0Cr25Al5.

Good for non-stop running?

Totally—great long-term stability when atmosphere and load are dialed in right.

Custom and bulk orders available?

Yes—we do custom sizes, wholesale, and OEM for B2B long-term partnerships.