Patent ID: 8858876

Claim:
A composition of matter comprising: about 6.0 wt % aluminum; about 6.5 wt % tantalum; about 4.5 wt % chromium; about 5.0 wt % tungsten; about 2.5 wt % molybdenum; about 4 wt % rhenium; about 12 wt % cobalt; from about 0.2 to about 0.6 wt % hafnium; from about 0.01 to about 0.03 wt % carbon; from about 0.002 to about 0.006 wt % boron; and balance nickel and incidental impurities, wherein the composition exhibits a sustained peak low cycle fatigue life at 1800° F./45 ksi of at least 4000 cycles.