A nickel-base superalloy for single crystal casting consisting of 5.60% to 5.80% by weight of aluminum; 9.4% to 9.8% by weight of cobalt; 3.2% to 3.9% by weight of chromium; 7.8% to 8.5% by weight of tantalum; 5.3% to 5.7% by weight of tungsten; 0.50% to 0.70% by weight of molybdenum; 4.3% to 4.9% by weight of rhenium; 0.75% to 0.90% by weight of titanium; 0.08% to 0.15% by weight of hafnium; a maximum of 100 ppm by weight of carbon; a maximum of 0.04% by weight of silicon; a maximum of 0.01% by weight of manganese; a maximum of 3 ppm by weight of sulfur; a maximum of 30 ppm by weight of phosphorus; a maximum of 30 ppm by weight of boron; a maximum of 0.15% by weight of niobium; a maximum of 150 ppm by weight of zirconium; a maximum of 0.01 % by weight of copper; a maximum of 0.15% by weight of iron; a maximum of 0.10% by weight of vanadium; a maximum of 0.15% by weight of ruthenium; a maximum of 0.25% by weight of platinum; a maximum of 0.20% by weight of palladium; a maximum of 0.02% by weight of magnesium; a maximum of 5 ppm by weight of nitrogen; a maximum of 5 ppm by weight of oxygen; a maximum of 2 ppm by weight of silver; a maximum of 0.2 ppm by weight of bismuth; a maximum of 10 ppm by weight of gallium; a maximum of 25 ppm by weight of calcium; a maximum of 1 ppm by weight of lead; a maximum of 0.5 ppm by weight of selenium; a maximum of 0.2 ppm by weight of tellurium; a maximum of 0.2 ppm by weight of thallium; a maximum of 10 ppm by weight of tin; a maximum of 2 ppm by weight of antimony; a maximum of 2 ppm by weight of arsenic; a maximum of 5 ppm by weight of zinc; a maximum of 2 ppm by weight of mercury; a maximum of 0.2 ppm by weight of cadmium; a maximum of 0.2 ppm by weight of indium; a maximum of 2 ppm by weight of germanium; a maximum of 2 ppm by weight of gold; a maximum of 20 ppm by weight of sodium; a maximum of 10 ppm by weight of potassium; a maximum of 10 ppm by weight of barium; a maximum of 2 ppm by weight of thorium; a maximum of 2 ppm by weight of uranium; with the balance being nickel and incidental impurities. 5.60% to 5.80% by weight of aluminum; 9.4% to 9.8% by weight of cobalt; 3.2% to 3.9% by weight of chromium; 7.8% to 8.5% by weight of tantalum; 5.3% to 5.7% by weight of tungsten; 0.50% to 0.70% by weight of molybdenum; 4.3% to 4.9% by weight of rhenium; 0.75% to 0.90% by weight of titanium; 0.08% to 0.15% by weight of hafnium; a maximum of 100 ppm by weight of carbon; a maximum of 0.04% by weight of silicon; a maximum of 0.01% by weight of manganese; a maximum of 3 ppm by weight of sulfur; a maximum of 30 ppm by weight of phosphorus; a maximum of 30 ppm by weight of boron; a maximum of 0.15% by weight of niobium; a maximum of 150 ppm by weight of zirconium; a maximum of 0.01 % by weight of copper; a maximum of 0.15% by weight of iron; a maximum of 0.10% by weight of vanadium; a maximum of 0.15% by weight of ruthenium; a maximum of 0.25% by weight of platinum; a maximum of 0.20% by weight of palladium; a maximum of 0.02% by weight of magnesium; a maximum of 5 ppm by weight of nitrogen; a maximum of 5 ppm by weight of oxygen; a maximum of 2 ppm by weight of silver; a maximum of 0.2 ppm by weight of bismuth; a maximum of 10 ppm by weight of gallium; a maximum of 25 ppm by weight of calcium; a maximum of 1 ppm by weight of lead; a maximum of 0.5 ppm by weight of selenium; a maximum of 0.2 ppm by weight of tellurium; a maximum of 0.2 ppm by weight of thallium; a maximum of 10 ppm by weight of tin; a maximum of 2 ppm by weight of antimony; a maximum of 2 ppm by weight of arsenic; a maximum of 5 ppm by weight of zinc; a maximum of 2 ppm by weight of mercury; a maximum of 0.2 ppm by weight of cadmium; a maximum of 0.2 ppm by weight of indium; a maximum of 2 ppm by weight of germanium; a maximum of 2 ppm by weight of gold; a maximum of 20 ppm by weight of sodium; a maximum of 10 ppm by weight of potassium; a maximum of 10 ppm by weight of barium; a maximum of 2 ppm by weight of thorium; a maximum of 2 ppm by weight of uranium; with the balance being nickel and incidental impurities.