(57) This invention relates to a hot corrosion resistant nickel-based superalloy comprising
the following elements in percent by weigth: from about 14.2 to about 15.5 percent
chromium, from about 2.0 to about 4.0 percent cobalt, from about 0.30 to about 0.45
percent molybdenum, from about 4.0 to about 5.0 percent tungsten, from about 4.5 to
about 5.8 percent tantalum, from about 0.05 to about 0.25 percent columbium, from
about 3.2 to about 3.6 percent aluminum, from about 4.0 to about 4.4 percent titanium,
from about 0.01 to about 0.06 percent hafnium, and the balance nickel plus incidental
impurities, the superalloy having a phasial stability number NV3B less than about 2.45. Single crystal articles can be suitably made from the superalloy
of this invention. The article can be a component for a gas turbine engine and, more
particularly, the component can be a gas turbine blade or gas turbine vane.
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