1-2 misunderstanding on titanium materials and titanium bike frames, here to clarify
Misleading one: Titanium alloy is very light, lighter than aluminum, and has the same weight as carbon fiber.
I don't have accurate data on carbon fiber for the time being. Let's look at the three metal materials commonly used on bicycles: the specific gravity of steel, aluminum and titanium.
The three materials of the sample volume can be calculated by using these three figures. Titanium is about 57.4% of the weight of steel, and aluminum is about 34.4% of the weight of steel. Therefore, aluminum is the lightest. Simply put, the same volume of aluminum is 40% lighter than titanium and 65% lighter than steel.
At the same time, another rhetoric that often appears on the Internet will be punctuated. Titanium is half the weight of steel. To be precise, it should be 57% or more.
Misleading 2: Titanium is a rare metal, so it is more expensive. I don't have much to say about this. The titanium element is not exaggerating to say that you can grab a handful of soil on the ground and take the elemental analysis to find a lot of titanium.
The reason why titanium is expensive is not because it is scarce, but because of the difficulty of smelting and post-processing.