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