From what materiel is an Olympic bar made of? I need the exact data
on: materiel, dimensions, and weight. Thank you!

fluffy, chocolatey nougat ?

well it actually depends on what type of bar are you talking about. a
wieght liffting bar?  if so 20 kilos, 7 ft long, 50 mm sleeve
diameter, center handels 22mm, with a stright allignment mesurment of
89/1000 of an inch. made from steel but most manufatures pride
themselves on the secrets involved with constructing a perfect bar. so
exact compotion of materials as well as methods of manufacturing are
hush, hush. it is a involved process that takes high pressures, heat
and a bit of rolling, then testing for purity and strenght begins.

I think he means the Parallel Bar...