Isn't there a further differentiation, as in forged monobloc? Or is the term forged to be used interchangeably with billet? Which is the mostest- billet or forged?
All metal starts out as cast into a billet (square) or a round (ball)
Forging is the process of making a rough shape out of softened billet or round. It is heated until soft enough to be malleable. The most common process is Hammer Forging where the shape is literally stamped. After being forged, the part is then finished using a cutter or CNC. The process of hammering while the metal is soft changes the grain structure and relieves internal stress.
Aluminum and steel can both be hammer forged, but it's less common to see it. Forging produces a super high strength part because it aligns metal grains and stuff like that.
The monobloc are CNC cut from an aluminum billet and finished. The process has several cutting steps.
I don't know of any hammer forged parts on the bike except for the crank and maybe the rods.
