Patent ID: 8734716

Claim:
A heat-resistant superalloy consisting in its composition of 12 to 14.9% by mass of chromium, 0.2 to 7% by mass of aluminum, 23.1 to 55% by mass of cobalt, from {0.17×(mass % of cobalt−23)+3} to {0.17×(mass % of cobalt−20)+7} % by mass of titanium, with the proviso that the composition consists of 6.1% or more by mass of titanium, optionally at least either 10% or less by mass of molybdenum or 10% or less by mass of tungsten, optionally at least either 5% or less by mass of niobium or 10% or less by mass of tantalum, optionally at least any of 2% or less by mass of vanadium, 5% or less by mass of rhenium, 2% or less by mass of hafnium, 0.5% or less by mass of zirconium, 5% or less by mass of iron, 0.5% or less by mass of carbon and 0.1% or less by mass of boron, and a balance of nickel and inevitable impurities, wherein the heat resistant superalloy is a cast and forged superalloy.