0Cr20Al3 Resistance Wire
Also Known As: 0Cr21Al4, Resistohm 123, 0Cr19Al3, GFC123 / GFC123W, 0Cr17Al4, FCHW-2 / FCHR-2, CrAl 20 5 etc.
Max 1100°C| Chemical Composition (%) | |
|---|---|
| C | ≤0.08 |
| P | ≤0.025 |
| S | ≤0.02 |
| Mn | ≤0.5 |
| Si | ≤0.7 |
| Cr | 18.0–21.0 |
| Ni | ≤0.6 |
| Al | 3.0–4.2 |
| Fe | Remainder |
| Physical Properties | |
| Max. Operating Temp. | 1100°C |
| Resistivity at 20°C (μΩ·m) | 1.23±0.07 |
| Density | 7.35 g/cm³ |
| Thermal Conductivity (20°C) | 13 W/(m·K) |
| Linear Expansion Coeff. (20–1000°C) | 13.5×10⁻⁶/°C |
| Specific Heat Capacity | 0.49 J/(g·K) |
| Approx. Melting Point | 1500°C |
| Elongation (A/%) | ≤3.0mm: ≥12%; >3.0mm: ≥15% |
| Tensile Strength (Rm) | ≥580 MPa |
| Accelerated Life Test | ≥80h/1250°C |
| Microstructure | Ferrite |
| Magnetic Properties | Magnetic |
| Available Forms | |
| Bright & Soft Annealed Wire | 0.05–1.6mm |
| Acid-Pickled / Oxidation Wire | 1.0–12.0mm |
| Rods | 6.0–150.0mm |
0Cr20Al3 — Cost-Effective Medium-Temperature FeCrAl Alloy
0Cr20Al3 is a cost-effective ferro-chromium-aluminum alloy designed for medium-temperature heating applications up to 1100°C. With lower aluminum and chromium content than premium grades, it offers an economical solution for applications that don’t require extreme temperature performance while still maintaining the fundamental advantages of FeCrAl technology.
Key Advantages
- Cost-effective alternative to high-end FeCrAl alloys
- Good oxidation resistance up to 1100°C
- Lower material cost due to reduced alloy content
- Adequate for general-purpose heating applications
- Good workability and formability
- Reliable performance in standard industrial environments
Typical Applications
- Medium-temperature industrial furnaces
- Domestic heating appliances and space heaters
- Water heating elements
- Drying ovens and baking equipment
- Food processing heating elements
- General-purpose resistance heating wire
Standards & Equivalents
International Standard Cross-Reference for 0Cr20Al3
| GB/T (China) | 0Cr20Al3 / 0Cr21Al4 / 0Cr19Al3 |
|---|---|
| Classification | Medium-temperature FeCrAl alloy |
| Key Feature | Cost-optimized composition |