N-155 alloy has high temperature properties which are inherent and do not depend upon age hardening. It is recommended for applications involving high stresses at temperatures up to 1500°F, and can be used up to 2000°F where only moderate stresses are involved. It has good ductility, excellent oxidation resistance, and can be readily fabricated and machined.

N-155 is recommended for parts which must possess good strength and corrosion resistance up to 1500°F. It is used in numerous aircraft applications such as tail cones and tailpipes, exhaust manifolds, combustion chambers, afterburners, turbine blades and buckets, and bolts.