The tensile strength for 1045 TGP Precision Steel Round is said to be 91 ksi. Although, different diameters must be a factor, right? Would a 1" diameter rod be 104.5 ksi or 1045 ksi?
Say I want to make a seven foot barbell, requiring about 150 ksi. Is it possible to get there by hardening some sort of steel? Or will that make it too brittle for lifting weight plates?