Incoloy A-286 (UNS S66286) is an iron-nickel-chromium-based austenitic superalloy engineered for high-temperature service. It combines excellent mechanical strength with good corrosion and oxidation resistance, making it ideal for structural components operating up to 700°C (1290°F).
1. Chemical Composition
| Ni | Cr | Fe | Mo | Ti | Al | V | B |
| 24.0-27.0 | 13.5-16.0 | Bal | 1.0-1.5 | 1.9-2.35 | 0.35 | 0.1-0.5 | 0.003-0.010 |
2.Mechanical Properties (After Age Hardening)
|
Tensile Strength |
Yield Strength |
Elongation |
|
895 MPa |
585 MPa |
15% |
3.High-Temperature Advantages
1.Oxidation Resistance: Performs well in air and oxidizing atmospheres.
2.Creep Resistance: Reliable under long-term high-temperature stress.
3.Thermal Stability: Maintains strength and dimensional integrity up to 700°C.
4. Fabrication & Welding
• Good Workability: Suitable for forging, rolling, turning, and milling.
• Weldability: TIG and MIG welding are recommended with matching filler metal.
• Heat Treatment: Solution annealing followed by aging improves performance post-welding.
Conclusion
Incoloy A-286 offers a well-balanced combination of high strength, oxidation resistance, and fabrication ease. For industries requiring reliable performance in 600–700°C conditions, it stands out as a material of choice.
Post time: May-20-2025