A nickel-base alloy consists of, by weight, about 15.0 to about 17.0% chromium,
about 7.0 to about 10.0% cobalt, about 1.0 to about 2.5% molybdenum, about 2.0
to about 3.2% tungsten, about 0.6 to about 2.5% columbium, less than 1.5% tantalum,
about 3.0 to about 3.9% aluminum, about 3.0 to about 3.9% titanium, about 0.005
to about 0.060% zirconium, about 0.005 to about 0.030% boron, about 0.07 to about
0.15% carbon, the balance nickel and impurities. Preferably, columbium is present
in an amount greater than tantalum. Tantalum can be essentially absent from the
alloy, i.e., only at impurity levels.
