PWA 1484 incorporates rhenium for solid-solution strengthening of the gamma matrix, significantly improving creep rupture life at temperatures above 1000°C compared to first-generation alloys. Its high tantalum and hafnium content contribute to oxidation resistance and phase stability during extended service. Qualified under PWA 1484, this alloy is used for high-pressure turbine blades in advanced military and commercial aero-engines where maximum temperature capability is the primary design driver.