ALCOA 7021 ALLOY is offered for the automotive bumper and bumper reinforcement market in the O temper (annealed). This is a stable temper ready for forming by the customer, after which solution treatment and artificial aging develop desired properties in the formed part. Having strength comparable to many high-strength low-alloy steels, ALCOA 7021 ALLOY can give a 63% weight saving in the beam applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, joining, and surface treatment. Filing Code: Al-271. Producer or source: Aluminum Company of America.