FeCrAl Cr21Al4/FCHW-2 High-Temperature Resistance Alloy Wire – Durable Heating Element for Industrial & Lab Applications

Material Overview:

• Alloy Type: FeCrAl (Iron-Chromium-Aluminum) alloy, standardized as Cr21Al4 or FCHW-2.
• Chemical Composition:
  • Chromium (Cr): 21%
  • Aluminum (Al): 4%
  • Iron (Fe): Balance (with trace impurities ≤0.15% C, ≤1.0% Mn, ≤1.0% Si).
• Standards Compliance:
  • DIN 17470 (Germany)
  • ASTM A580 (USA)
  • ISO 9001:2015 certified manufacturing.

Key Features & Performance:

1. High-Temperature Resistance:
   • Operates continuously up to 1250°C (2282°F).
   • Short-term peak temperatures up to 1350°C without structural degradation.
2. Oxidation & Corrosion Resistance:
   • Forms a stable Al2O3 + Cr2O3 oxide layer at high temperatures, preventing rust and chemical attack in oxidizing environments (e.g., air, water vapor, sulfur-rich gases).
3. Electrical Resistivity:
   • 1.50 μΩ·m at 20°C, ensuring efficient heat generation with minimal energy loss.
4. Low Thermal Drift:
   • Maintains ±1.5% resistance stability from 20°C to 1100°C, ideal for precision heating systems.
5. Mechanical Strength:
   • Tensile Strength: ≥600 MPa
   • Elongation: ≥18% (ASTM E8 tested)

Applications:

• Industrial Heating Systems:
  • Electric furnaces for metal heat treatment, glass melting, and ceramic sintering.
  • Industrial ovens for coating, drying, and curing processes.
• Laboratory Equipment:
  • High-temperature test chambers, calibration furnaces, and sample heating devices.
• Specialized Use Cases:
  • Automotive Exhaust Systems: Preheating catalysts in emission control units.
  • 3D Printer Beds: Custom high-temperature heating elements for industrial-grade printers.
  • Semiconductor Manufacturing: Annealing and wafer heating in controlled environments.

Chemical Content(%)

Mechanical Properties

FAQ

1. What's the minimum quantity customer can order?

If we have your size in stock, we can provide any quantity you want.

If we do not have, for spool wire, we can produce 1 spool, about 2-3kg. For coil wire, 25kg.

2. How can you pay for small sample amount?

We have account, wire transfer for sample amount also ok.

3. Customer do not have express account. How will us arrange the delivery for sample order?

Just need to provide your address information, we will check the express cost, you can arrange the express cost together with sample value.

4. What's our payment terms?

We can accept LC T/T payment terms, it also depending on delivery and total amount. Let's talk more in details after getting your detailed requirements.

5. Do you provide free samples?

If you want several meters and we have stock of your size, we can provide, customer need to bear the International express cost.

6. What's our working time?

We will give you reply through email/phone Online contact tool within 24 hours. No matter working day or holidays.