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Aluminum Alloy 2124 Sheet has good fracture toughness
Aluminum Alloy 2124 Sheet was developed primarily for elevated temperature applications requiring guaranteed fracture toughness and improved short transverse properties in plate gauges over 1.0 inches thick. This sheet alloy also exhibits good strength retention and creep resistance at elevated temperatures up to 177 degrees, which is machined fuselage bulkheads and wing skins in high-performance military aircraft.
Formability of this alloy, which is supplied in plate form, is limited. Severe cold working should be avoided and as with machinability the optimum condition for forming is the T 851 temper. The alloy has a problem with crack sensitivity during welding. Resistance welding may be successfully used with proper weld procedure. Gas welding and arc welding should be avoided. The alloy may be solution annealed at 920 F followed by water quench. Precipitation hardening is done at 375 F for 12 hours and air cooling - this produces the T 851 temper. Cold working may be done, but the extent of cold working is limited as compared to other aluminum alloys. Annealing is done at 775 F for 2 to 3 hours followed by cooling at 50 F per hour to 500 F. Then air cool.
As one of major aluminum sheet suppliers in China, Sino East had built the quality supervision department and aluminum lab to control the quality of production which will export to other countries. We are looking forward to having chance to start our long-term cooperation with friends all over the world! Email: sinoeast3@163.com