you had 20 pounds of hardware (nuts and bolts) before switching to TI/aluminum?I shaved almost 8 lbs via Titanium and Aluminum hardware,
Also:
(quoted from a fastener website)
If you are substituting any "steel alloy" socket head screws ("Allen head") with TI, you are using weaker, inferior strength fasteners. Aluminum is worse yet.Accordingly, if you need to replace 8.8 strength bolts, then make sure you are using the strongest and best Ti bolts you can get. DO NOT replace 10.9 or 12.9 bolts with Ti.
Strength to weight ratio is deceiving.