Recent investigations have identified thermal-mechanical processing conditions which significantly enhance the hot workability of P/M nickel-based superalloys. The process incorporates hot isostatic pressing (HIP) of powder at temperatures just below the solidus of the alloy. The hot ductility produced by this sub-solidus HIP (SS-HIP), has been found to be superior to that of powder metallurgy (P/M) superalloys that were either conventionally HIPed or extrusionconsolidated. The benefits of this new process have the potential of reducing processing costs and producing components with superior microstructures and properties.