Waspaloy Machining
Waspaloy
A nickel-base superalloy, Waspaloy is a registered trademark of the United Technologies Corp. The notable characteristics of Waspaloy machining includes: excellent high-temperature strength and good resistance to corrosion, notably to oxidation. Waspaloy is age-hardenable with useful strength at temperatures up to 1400-1600°F (760-870°C) with a good oxidation resistance in gas turbine engine atmospheres up to 1600°F (870°C). Waspaloy has a creep rupture strength superior to that of Alloy 18 at temperatures above 1150*1200°F (620-650°C). Due to its superior characteristics, Waspaloy machining is commonly used in extreme environments.
Waspaloy Usage
Due to its’ excellent resistance to corrosion created by combustion products at temperatures up to 1600°F, Waspaloy machining is commonly used in critical rotating applications such as gas turbines and aircraft jet engines. Less demanding applications for the use of Waspaloy machining include: compressor and rotor discs, shafts, spacers, seals, rings and casings, fasteners and other miscellaneous engine hardware, airframe assemblies and missile systems.
Machining Waspaloy
Waspaloy is difficult to machine, due to its strength, low thermal conductivity, abrasiveness and tendency to work harden. It has a turning machinability rating of 1.0 (bar, forge), 1.1 (cast) and a drilling machinability rating of 14% (bar, forge), 16% (cast). The uncoated carbide cutting tools typically used in Waspaloy machining are micrograin in structure.
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