📄 Product Description: Alloy 426 — Heat-Resistant and Corrosion-Resistant Iron-Based Alloy with Chromium and Nickel
🧾 General Technical Characteristics
Alloy 426 is a heat-resistant, iron-based alloy with a high chromium content (~26%) and moderate nickel content (~8%), developed for use in high-temperature environments and aggressive atmospheres. It offers excellent oxidation resistance, strong mechanical performance at elevated temperatures, and good weldability.
It is ideally suited for components operating under thermal and mechanical stress, including furnace elements, heat exchangers, exhaust systems, and power generation equipment.
⚙️ Applications
- Heat exchangers and piping
- Combustion chambers and industrial furnace parts
- Turbine casings
- Exhaust system components
- Chemical processing equipment
📈 Key Advantages
- ✅ Oxidation resistance at high temperatures up to 1100 °C
- ✅ Good mechanical strength under heat
- ✅ Corrosion resistance in aggressive environments
- ✅ Excellent weldability
- ✅ Durability under cyclic thermal loading
🧪 Chemical Composition (typical for Alloy 426)
| Element | Content (%) |
|---|---|
| Iron (Fe) | Balance |
| Chromium (Cr) | ~25–27 |
| Nickel (Ni) | ~7–9 |
| Molybdenum (Mo) | ≤ 1.0 |
| Carbon (C) | ≤ 0.05 |
| Manganese (Mn) | ≤ 1.0 |
| Silicon (Si) | ≤ 1.0 |
| Nitrogen (N) | ≤ 0.10 |
🧩 Mechanical and Physical Properties
- Tensile Strength: ~500–750 MPa
- Yield Strength: ~250–400 MPa
- Elongation: ≥ 25%
- Hardness: ~170–220 HB
- Density: ~7.7 g/cm³
- Operating Temperature: up to 1100 °C
✅ Conclusion
Alloy 426 is a high-temperature, corrosion-resistant alloy ideal for use in thermally and chemically demanding environments. It is widely used in power generation, metallurgy, furnace equipment, and other industries where high heat resistance and durability are essential.
Available in sheets, tubes, rods, forgings, and custom-machined parts. Can be supplied in heat-treated condition upon request.
Delivery Forms Alloy 426
| Alloy 426 wheel | Diameter 4-300mm |
| Alloy 426 sheet | Thickness 0.5-20mm |
| Alloy 426 Tape | Thickness 0.2-2mm |
| Alloy 426 strip | Thickness 10-50mm |
| Alloy 426 wire | Diameter 0.5-9mm |
| Alloy 426 Tube | – Hot Rolled Round Tube diameter 38 or more up to 244.5 mm, thickness from 3 to 25 mm -Cold drawn round tube diameter from 6 to 219.1mm thickness from 0.9 to 14.2mm |
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