Forty papers deal with properties of Zircaloy and to a lesser extent, Zr-2.5-Nb. The majority covers fabrication and physical properties, general corrosion and hydriding, fracture and fatigue, and stress corrosion cracking. Special consideration is given to irradiation growth, Zircaloy cladding behavior under conditions expected in a loss-of-coolant accident, and nodular corrosion.