Short-Time Elevated Temperature Mechanical Properties of 2219-T87 and 2219-T6 Aluminum Alloy

Abstract

The mechanical properties of 2219-T87 and 2219-T6 aluminum were determined after soak times from 0 to 300 sec at temperatures from 300 deg F (149 deg C) to 600 deg F (316 deg C). Specimens were tested also at ambient temperatures after a soaking period of 300 sec at temperatures of 200 deg F (93 deg C) to 700 deg F (371 deg C). In general, the tensile strength of the 2219 aluminum alloy decreased with increasing temperature. The tensile properties were not significantly influenced by variations in the soak times used through 500 deg F (260 deg C). At 600 deg F (316 deg C), increasing the soak time affected the strength slightly. For relatively short time exposures, this material can be recommended for load-bearing applications to 400 deg F (204 deg C), at which temperature 70 percent of the ambient temperature strength is still retained. When tested at ambient temperature after exposure to 400 deg F (204 deg C) for 300 sec, 2219-T87 retained approximately 97 percent of its original ambient temperature strength.