This reference contains the cross reference numbers for AISI, ASTM, FED, MIL SPEC, and SAE specifications. These are typical mechanical properties for sizes of about 1/2 inch. A typical value may be neither the mean nor the minimum. It is a value which can be obtained when the purchase specifications are carefully written and with continuous inspection and testing. The values given for fatigue strength, S_f, correspond to 50e7 cycles of completely reversed stress. Aluminum alloys do not have an endurance limit. The yield strength is 0.2% offset value. Multiply strength in kpsi by 6.89 to get strength in MPa