PRECEDENT-71 is an aluminum casting alloy that age hardens at room temperature. It is recommended for heavy shock and high static loads, and for severe fatigue and endurance loading. The alloy is supplied in two grades. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-113. Producer or source: William F. Jobbins Inc..