| Waspaloy has excellent high-temperature strength and good corrosion resistance, notably to oxidation, at service temperatures up to 1200°F (650°C) for critical rotating applications (such as gas turbine engine components), and up to 1600°F (870°C) for less demanding applications. The alloy’s high-temperature strength is derived from its solid solution strengthening elements, molybdenum, cobalt and chromium, and its age-hardening elements, aluminum and titanium. Its strength and stability ranges are higher than those typically available for alloy 718. The alloy’s oxidation resistance is good under conditions of frequent thermal cycling, and in continuous exposure to temperatures up to 1900°F (1038°C). It has performed well in atmospheres found in gas turbine engine service and in salt spray environments. Solution-treated material offers the best levels of corrosion resistance. Mechanical properties reported for specimens heat treated for optimum creep and stress-rupture properties: Solution treat at 1080°C (1975°F)/4h/AC. Then stabilize by reheat to 845°C (1550°F)/24h/AC. Then age harden by reheat to 760°C (1400°F)/16h/AC. Information Provided by Special Metals Corporation |
| Werkstoff Number W. Nr. 2.4654 |
