Abstract Inconel Alloy 725HS is a Ni-Cr-Mo-Cb alloy that is age hardenable and is a higher strength version of Inconel alloy 725 (see Alloy Digest Ni-445, January 1994). The alloy is corrosion resistant and is often used in fastener or marine fabrication applications. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and shear strength as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as heat treating and machining. Filing Code: Ni-604. Producer or source: Special Metals Corporation.