When to pick this combination
Haynes 282 fills the gap between Inconel 718 (limited above 650 °C) and Hastelloy X (lower strength). Pick it for next-generation turbine hot-section parts that need both creep resistance and forgeability of microstructure.
- Turbine combustor and aft-turbine hardware 700–870 °C
- Replacement of Waspaloy in repair programs
- Heat-exchanger primary surfaces in next-gen engines
Typical defects and how the model accounts for them
γ′-strengthened nickels are strain-age-cracking-prone. The 1135 °C solution must be reached without crossing the 800–950 °C window slowly — Haynes 282 is more forgiving than Waspaloy but still requires controlled ramps. ForgeCast flags any feature requiring multi-step ramp on stress-relief.
Required post-processing
The allowables above assume the full post-processing chain. Skipping any step degrades the row by 15–35 %.
- Stress relief: 1065 °C / 2 h / Ar (fast ramp)
- HIP: 1185 °C / 100 MPa / 4 h
- Solution: 1135 °C / 1 h / fast cool
- Age: 1010 °C / 2 h then 788 °C / 8 h
- Machine critical interfaces
Suggested build parameters
Starting recipe; tune against first-article inspection on geometry-sensitive features.
- Layer: 40 μm
- Laser: 280 W
- Scan: 980 mm/s
- Hatch: 110 μm
- Build plate: 80 °C
Frequently asked questions
Why pick Haynes 282 over Inconel 718?
Above 650 °C the IN718 γ″ phase coarsens and strength drops sharply. Haynes 282's γ′ stays stable to ~870 °C with similar tensile properties and better creep.
Sources
- Haynes International Haynes 282 product brochure
- Pike, L. M. (2008). Development of a fabricable γ′-strengthened superalloy. Superalloys 2008.